Siemens VIU-20 User manual

PRINTED IN U.S.A.
INSTALLATION AND INSTRUCTION
VITAL INTERFACE UNIT 20 INPUTS /
OUTPUTS (VIU-20) A80515
SEPTEMBER 2012 (REVISED OCTOBER 2019)
DOCUMENT NO. SIG-00-07-11
VERSION B.2
Siemens Mobility, Inc.
700 East Waterfront Drive
Munhall, Pennsylvania 15120
1-800-793-SAFE
www.usa.siemens.com/rail-manuals
Copyright © 2012 - 2019 Siemens Mobility, Inc.
All rights reserved

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Version No.: B.2
PROPRIETARY INFORMATION
Siemens Mobility, Inc. has a proprietary interest in the information contained herein and, in some
instances, has patent rights in the systems and components described. It is requested that you
distribute this information only to those responsible people within your organization who have an
official interest.
This document or the information disclosed herein, shall not be reproduced or transferred to other
documents or used or disclosed for manufacturing or for any other purpose except as specifically
authorized in writing by Siemens Mobility, Inc.
TRANSLATIONS
The manuals and product information of Siemens Mobility, Inc. are intended to be produced and
read in English. Any translation of the manuals and product information are unofficial and can be
imprecise and inaccurate in whole or in part. Siemens Mobility, Inc. does not warrant the
accuracy, reliability, or timeliness of any information contained in any translation of manual or
product information from its original official released version in English and shall not be liable for
any losses caused by such reliance on the accuracy, reliability, or timeliness of such information.
Any person or entity that relies on translated information does so at his or her own risk.
WARRANTY INFORMATION
Siemens Mobility, Inc. warranty policy is as stated in the current Terms and Conditions of Sale
document. Warranty adjustments will not be allowed for products or components which have
been subjected to abuse, alteration, improper handling or installation, or which have not been
operated in accordance with Seller's instructions. Alteration or removal of any serial number or
identification mark voids the warranty.
SALES AND SERVICE LOCATIONS
Technical assistance and sales information on Siemens Mobility, Inc.products may be obtained
at the following locations:
SIEMENS MOBILITY, INC.
SIEMENS MOBILITY, INC.
2400 NELSON MILLER PARKWAY
939 S. MAIN STREET
LOUISVILLE, KENTUCKY 40223
MARION, KENTUCKY 42064
TELEPHONE:
[phone]
TELEPHONE:
[phone]
FAX:
[phone]
CUSTOMER SERVICE:
[phone]
SALES & SERVICE:
[phone]
TECHNICAL SUPPORT:
[phone]
WEB SITE:
http://www.rail-automation.com/
FAX:
[phone]
FCC RULES COMPLIANCE
The equipment covered in this manual has been tested and found to comply with the limits for a
Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area is
likely to cause harmful interference in which case the user will be required to correct the
interference at his/her own expense.

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Version No.: B.2
DOCUMENT HISTORY
Version
Release
Date
Sections
Changed
Details of Change
2
4-25-08
-----
INITIAL REVIEW COPY
3
5-14-08
-----
2nd Review Copy
A
5-21-08
-----
Initial Release per inspection VS2-F125
A.1
9-11-08
-----
Added RC2 Programming Info to Appendix A
B
9-12-12
ALL
Updated per inspection VS2-F284
B.1
Apr 2014
ALL
Convert to Siemens Format
B.2
Oct 2019
Added additional Cautions, Warnings, and Notes
2, 5, and 7

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Version No.: B.2
Table of Contents
Section Title Page
SECTION 1 ................................................................................................................................................1-1
1.0 INTRODUCTION.............................................................................................................................1-1
1.1 GENERAL....................................................................................................................................1-1
1.2 APPLICATIONS...........................................................................................................................1-1
1.2.1 Wayside Interface Application .....................................................................................1-2
1.2.2 PTC Hand Throw Switch Monitoring Application.........................................................1-3
1.3 SYSTEM DATA LOGS ................................................................................................................1-3
1.3.1 Event Log.....................................................................................................................1-4
1.3.2 Diagnostic Log .............................................................................................................1-4
1.3.3 Status, Summary and Maintenance Logs....................................................................1-5
1.3.4 Consolidated Logging ..................................................................................................1-5
1.4 HARDWARE DESCRIPTION ......................................................................................................1-5
1.4.1 User Interface and Connectors....................................................................................1-6
1.4.2 Keypad Operations ......................................................................................................1-9
1.4.3 Front Panel Default Display.........................................................................................1-9
1.4.4 VIU Main Menu ..........................................................................................................1-10
1.4.4.1 SITE SETUP Menu....................................................................................................1-11
1.4.4.2 Data Entry Using Keypad ..........................................................................................1-12
1.4.4.3 USB Menu .................................................................................................................1-12
1.4.4.4 USB Drive Structure ..................................................................................................1-14
1.4.5 Keypad Quick Access Keys.......................................................................................1-16
1.5 SPECIFICATIONS.....................................................................................................................1-16
1.6 VIU ORDERING INFORMATION ..............................................................................................1-18
SECTION 2 ................................................................................................................................................1-1
2.0 INSTALLATION...............................................................................................................................2-1
2.1 General ........................................................................................................................................2-1
2.1.1 Mounting ......................................................................................................................2-1
2.1.2 Ventilation Requirements.............................................................................................2-3
2.1.3 Power Connection .......................................................................................................2-3
2.1.3.1 Power Conductor Wire Preparation.............................................................................2-4
2.1.3.2 Installing EMI Filter on Power Cable ...........................................................................2-4
2.1.4 Surge Protection ..........................................................................................................2-5
2.1.5 Vital Inputs ...................................................................................................................2-5
2.1.5.1 Discrete Vital Input/Output Connections......................................................................2-6
2.1.5.2 Connector Wiring Procedure .......................................................................................2-6
2.1.6 Serial Interfaces...........................................................................................................2-6
2.1.6.1 Laptop (Serial) Interface ..............................................................................................2-7
2.1.6.2 Serial Interface (Top Panel).........................................................................................2-7

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2.1.7 Ethernet Interfaces ......................................................................................................2-8
2.1.8 GPS Port......................................................................................................................2-9
2.1.9 GPS Antenna.............................................................................................................2-10
2.1.10 USB Interface ............................................................................................................2-10
SECTION 3 ................................................................................................................................................2-1
3.0 OPERATION ...................................................................................................................................3-1
3.1 POWER-UP .................................................................................................................................3-1
3.1.1 VIU Real-Time Clock ...................................................................................................3-2
3.1.2 Front Panel Boot Display Sequence............................................................................3-2
3.2 TRANSFERRING FILES TO THE VIU ........................................................................................3-3
3.2.1 USB Drive File Structure..............................................................................................3-3
3.2.2 File Transfer Options ...................................................................................................3-4
3.2.2.1 Download Reports From VIU Into USB Drive..............................................................3-4
3.2.2.2 Download Files From VIU Into USB Drive...................................................................3-4
3.2.2.3 Upload Files From USB Drive Into VIU .......................................................................3-5
3.2.3 Exiting the USB Drive ..................................................................................................3-5
3.3 VIU CONFIGURATION................................................................................................................3-6
3.4 VIU OPERATING STATES .........................................................................................................3-6
3.5 CONFIGURATION VERIFICATION AT STARTUP.....................................................................3-6
3.6 INTEROPERABLE TRAIN CONTROL MESSAGING (ITCM) SYSTEM.....................................3-7
3.7 GPS TIME REFERENCE ............................................................................................................3-7
3.8 MULTIPLE VIUS IN A SYSTEM..................................................................................................3-8
SECTION 4 ................................................................................................................................................3-1
4.0 VIU SETUP .....................................................................................................................................4-1
4.1 INTRODUCTION .........................................................................................................................4-1
4.2 SOFTWARE LOAD AND CONFIGURATION SEQUENCE ........................................................4-2
4.3 HOW SIGNALS AND SWITCHES ARE MAPPED TO VITAL INPUTS ......................................4-4
4.4 SAMPLE ASPECT CODES DECODED BY VIU .........................................................................4-6
4.5 PROCEDURE FOR CALCULATING A NEW UCN .....................................................................4-7
4.6 CONFIGURE A VIU-20................................................................................................................4-8
4.7 PLACE A VIU-20 IN OPERATION ............................................................................................4-10
SECTION 5 ................................................................................................................................................4-1
5.0 WAYSIDE INTERFACE APPLICATION .........................................................................................5-1
5.1 INTRODUCTION .........................................................................................................................5-1
5.2 WAYSIDE INTERFACE SYSTEM...............................................................................................5-1
5.2.1 Vital Interface Unit (VIU) ..............................................................................................5-2
5.2.1.1 Multiple VIUs in a Large Interlocking ...........................................................................5-2
5.2.1.2 Message Time Stamp..................................................................................................5-2
5.2.1.3 Message Security ........................................................................................................5-2
5.2.2 Interoperable Train Control Messaging (ITCM) ...........................................................5-3
5.2.3 Train Management Computer (TMC) ..........................................................................5-3

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5.2.4 Typical Wayside Interface System Interconnect Diagram (Single VIU) ......................5-4
5.2.5 Typical Wayside Interface System Interconnect Diagram (Multiple VIUs) ..................5-5
SECTION 6 ................................................................................................................................................5-1
6.0 DIAGNOSTIC TERMINAL (DT) SOFTWARE .................................................................................6-1
6.1 INTRODUCTION .........................................................................................................................6-1
6.2 DT TO VIU INTERFACE .............................................................................................................6-1
6.3 DT PROGRAM STARTUP ..........................................................................................................6-2
6.3.1 DT Startup Sequence ..................................................................................................6-2
6.4 VIU INPUT STATUS OVERVIEW SCREEN ...............................................................................6-4
6.4.1 Input Status Overview Screen Button Descriptions and Menus..................................6-7
6.5 COMM (COMMUNICATIONS) BUTTON MENU.........................................................................6-8
6.5.1 DT Port Setup ..............................................................................................................6-8
6.6 VIEW BUTTON MENU ................................................................................................................6-9
6.6.1 Software Information..................................................................................................6-10
6.6.2 System Status............................................................................................................6-10
6.6.2.1 Viewing Input Logic Status ........................................................................................6-11
6.6.2.2 Input Logic States Display .........................................................................................6-12
6.6.3 On-Line Status...........................................................................................................6-12
6.7 PROG (PROGRAM) BUTTON MENU.......................................................................................6-13
6.7.1 Online and Offline Display Screens...........................................................................6-13
6.7.2 Changing Locked Configuration Parameters ............................................................6-14
6.7.3 PHYSICAL Configuration...........................................................................................6-15
6.7.3.1 Physical Layout..........................................................................................................6-15
6.7.3.2 MODULE Configuration .............................................................................................6-16
SECTION 7 ................................................................................................................................................6-1
7.0 VIU WEB BROWSER USER INTERFACE .....................................................................................7-1
7.1 INTRODUCTION .........................................................................................................................7-1
7.2 LAUNCHING THE VIU WEB BROWSER ...................................................................................7-1
7.2.1 User Computer Setup ..................................................................................................7-1
7.2.2 Web Browser Icons......................................................................................................7-3
7.3 ACCESSING NON-VITAL CONFIGURATION PARAMETERS..................................................7-6
7.3.1 ACSES II Network .......................................................................................................7-7
7.3.1.1 ACSES-II UDP Enabled...............................................................................................7-7
7.3.1.2 UDP Port......................................................................................................................7-7
7.3.2 ATCS Router Configuration .........................................................................................7-7
7.3.2.1 Route Timeout .............................................................................................................7-7
7.3.2.2 Remote VIU Port..........................................................................................................7-7
7.3.3 Diagnostic Log Configuration ......................................................................................7-8
7.3.3.1 Server IP ......................................................................................................................7-8
7.3.3.2 Diagnostic Log Verbosity.............................................................................................7-8
7.3.4 EMP-WIU Configuration ..............................................................................................7-9
7.3.4.1 WIU Address..............................................................................................................7-10

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7.3.4.2 Encrypted HMAC Key................................................................................................7-11
7.3.4.3 RC2 Key.....................................................................................................................7-11
7.3.4.4 Message Version .......................................................................................................7-11
7.3.4.5 EMP Header Source Address ...................................................................................7-11
7.3.4.6 EMP Header Destination Address.............................................................................7-11
7.3.4.7 EMP Timed Beacon TTL ...........................................................................................7-12
7.3.4.8 EMP WIU Status Response TTL ...............................................................................7-12
7.3.4.9 EMP Timed Beacon QOS..........................................................................................7-12
7.3.4.10 EMP WIU Status Response QOS .............................................................................7-12
7.3.4.11 Class C Multicast IP Address ....................................................................................7-12
7.3.4.12 Access Gateway (AG) IP Address (Class D Remote Address).................................7-12
7.3.4.13 Access Gateway (AG) Port (Class D Remote Port) ..................................................7-12
7.3.4.14 Log Traffic..................................................................................................................7-13
7.3.4.15 Keep Alive Interval (msec).........................................................................................7-13
7.3.4.16 Keep Alive ACK Timeout (msec) ...............................................................................7-13
7.3.4.17 Class D Data ACK Enabled .......................................................................................7-13
7.3.4.18 Data ACK Timeout (msec).........................................................................................7-13
7.3.4.19 Data NAK Retry Limit.................................................................................................7-13
7.3.4.20 Retransmit Delay (msec) ...........................................................................................7-14
7.3.4.21 Connection Attempt Timeout (msec) .........................................................................7-14
7.3.4.22 Connection Delay (msec) ..........................................................................................7-14
7.3.4.23 Connection Retry Limit ..............................................................................................7-14
7.3.4.24 Reconnection Limit ....................................................................................................7-14
7.3.5 Ethernet Configuration...............................................................................................7-14
7.3.5.1 DHCP Configuration (Laptop tab)..............................................................................7-15
7.3.5.2 Laptop IP (Laptop tab)...............................................................................................7-15
7.3.5.3 Laptop Gateway (Laptop tab) ....................................................................................7-15
7.3.5.4 Laptop Network Mask (Laptop tab) ...........................................................................7-16
7.3.5.5 DHCP Configuration (Port 1) .....................................................................................7-16
7.3.5.6 IP (Port 1) ..................................................................................................................7-16
7.3.5.7 Gateway (Port 1)........................................................................................................7-16
7.3.5.8 Network Mask (Port 1)...............................................................................................7-16
7.3.5.9 DHCP Configuration (Port 2) .....................................................................................7-17
7.3.5.10 IP (Port 2) ..................................................................................................................7-17
7.3.5.11 Gateway (Port 2)........................................................................................................7-17
7.3.5.12 Network Mask (Port 2) ...............................................................................................7-17
7.3.6 Event Log Configuration ............................................................................................7-17
7.3.6.1 Server IP ....................................................................................................................7-18
7.3.7 GPS CONFIGURATION ............................................................................................7-19
7.3.7.1 Internal GPS Enabled ................................................................................................7-19
7.3.7.2 Receive Timeout (secs) .............................................................................................7-20
7.3.7.3 Time Message Deviation (secs) ................................................................................7-20
7.3.7.4 Consolidated Time Server (checkbox) ......................................................................7-20
7.3.7.5 Max Time Change Within Minutes (min) ...................................................................7-20
7.3.7.6 Max Secs Time Change (sec) ...................................................................................7-21
7.3.7.7 Ignored Time Difference (sec) ...................................................................................7-21
7.3.7.8 Time Msgs Before Sending WSM (sec) ....................................................................7-21
7.3.7.9 LRM Maximum Seconds Time Difference (sec)........................................................7-21
7.3.7.10 No Time Sync Msg (min) ...........................................................................................7-21
7.3.8 High Availability (Connection 1 – Connection 12) .....................................................7-21
7.3.9 Serial Port Configuration............................................................................................7-22
7.3.9.1 Baud Rate (Laptop tab) .............................................................................................7-22
7.3.9.2 Flow Control (Laptop tab) ..........................................................................................7-23
7.3.9.3 Parity (Laptop tab) .....................................................................................................7-23

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7.3.9.4 Data Bits (Laptop tab)................................................................................................7-23
7.3.9.5 Stop Bits (Laptop tab) ................................................................................................7-23
7.3.9.6 Protocol (Laptop tab) .................................................................................................7-23
7.3.9.7 Baud Rate (Port One tab) ..........................................................................................7-23
7.3.9.8 Flow Control (Port One tab).......................................................................................7-24
7.3.9.9 Parity (Port One tab)..................................................................................................7-24
7.3.9.10 Data Bits (Port One tab) ............................................................................................7-24
7.3.9.11 Stop Bits (Port One tab).............................................................................................7-24
7.3.9.12 Protocol (Port One tab)..............................................................................................7-24
7.3.10 Site Info Configuration ...............................................................................................7-24
7.3.10.1 Site Name ..................................................................................................................7-25
7.3.10.2 Milepost......................................................................................................................7-25
7.3.10.3 DOT Number .............................................................................................................7-25
7.3.10.4 Time Zone..................................................................................................................7-25
7.3.10.5 Site’s ATCS Address .................................................................................................7-26
7.3.10.6 MCF CRC ..................................................................................................................7-26
7.3.10.7 Additional Data ..........................................................................................................7-26
7.3.11 SNTP .........................................................................................................................7-26
7.3.11.1 NTP Mode..................................................................................................................7-27
7.3.11.2 Primary NTP Time Source.........................................................................................7-27
7.3.11.3 Backup NTP Time Source .........................................................................................7-27
7.3.11.4 NTP Multicast address...............................................................................................7-27
7.3.11.5 NTP UDP Port ...........................................................................................................7-27
7.3.11.6 NTP Polling Rate .......................................................................................................7-27
7.3.11.7 NTP Wait Time ..........................................................................................................7-27
7.3.12 TCP Port Configuration..............................................................................................7-28
7.3.12.1 DT TCP Port ..............................................................................................................7-28
7.3.12.2 VTP TCP Port ............................................................................................................7-28
7.3.12.3 AServer UDP Port......................................................................................................7-28
7.3.12.4 Route Region One IP.................................................................................................7-28
7.3.12.5Route Region Two IP.................................................................................................7-29
7.3.12.6 Route Maintain Timer ................................................................................................7-29
7.3.12.7 Route Establish Timer ...............................................................................................7-29
7.3.12.8 Circuit ID ....................................................................................................................7-29
7.3.12.9 Office Path Byte.........................................................................................................7-29
7.3.13 Time source ...............................................................................................................7-30
7.4 VIEWING LOGS ........................................................................................................................7-30
7.4.1 Diagnostic Log ...........................................................................................................7-31
7.4.2 Event Log...................................................................................................................7-34
7.5 MAINTENANCE.........................................................................................................................7-35
7.5.1 Class D Tests ............................................................................................................7-35
7.5.1.1 Test Server IP Address:.............................................................................................7-35
7.5.1.2 Test Server Port Number...........................................................................................7-35
7.5.1.3 Test Frame Count......................................................................................................7-35
7.5.1.4 Delay Between Test Frames (msec) .........................................................................7-35
7.5.1.5 ITC Class D Starting Comm ID..................................................................................7-36
7.5.2 System Time..............................................................................................................7-36
7.6 STATUS.....................................................................................................................................7-38
7.6.1 GPS ...........................................................................................................................7-38
7.6.2 Health.........................................................................................................................7-39

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7.6.3 Reports ......................................................................................................................7-39
7.6.4 Config Report.............................................................................................................7-40
7.6.5 Version Report...........................................................................................................7-42
SECTION 8 ................................................................................................................................................7-1
8.0 MAINTENANCE AND TROUBLESHOOTING ................................................................................8-1
8.1 MAINTENANCE...........................................................................................................................8-1
8.1.1 Battery Maintenance....................................................................................................8-1
8.1.2 Uploading Software To The VIU From A USB Drive ...................................................8-1
8.1.3 Downloading Event and Diagnostic Logs From The VIU to a USB Drive ...................8-2
8.2 TROUBLESHOOTING.................................................................................................................8-2
8.2.1 Status LEDs.................................................................................................................8-2
8.2.2 LED Activity at Power-Up ............................................................................................8-4
8.2.3 Possible System Problems..........................................................................................8-5
8.2.4 Using DT Diagnostic Tools ..........................................................................................8-6
8.2.4.1 Statistics.......................................................................................................................8-6
8.2.4.2 Sniffer...........................................................................................................................8-7
8.2.5 Other Useful DT Tools .................................................................................................8-8

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LIST OF FIGURES
Section Title Page
Figure 1-1 VIU Used in Wayside Interface Application............................................................................1-2
Figure 1-2 VIU Used in PTC Hand Throw Switch Monitoring Application ...............................................1-3
Figure 1-3 VIU User Interface and Connector Locations.........................................................................1-6
Figure 1-4 Keypad Quick Access Keys....................................................................................................1-9
Figure 1-5 Main Menu Navigation..........................................................................................................1-10
Figure 1-6 SITE SETUP Menu...............................................................................................................1-11
Figure 1-7 Example USB Drive File Structure .......................................................................................1-14
Figure 1-8 USB Menu Map Keypad Quick Access Keys .......................................................................1-15
Figure 1-9 VIU Ordering Information......................................................................................................1-18
Figure 1-10 VIU Accessory Ordering Information ..................................................................................1-19
Figure 2-1 Rack or Wall-Mount Plate, D39619 ........................................................................................2-2
Figure 2-2 Shelf-Mount Stabilizing Plate, D39620 ...................................................................................2-2
Figure 2-3 Power & ECD Connector........................................................................................................2-3
Figure 2-4 Inserting Wire in Cage Clamp Type Connector......................................................................2-4
Figure 2-5 Clamp-on EMI Filter (open) ....................................................................................................2-4
Figure 2-6 EMI Filter Installation (showing wire loops) ............................................................................2-5
Figure 2-7 EMI Filter Installed ..................................................................................................................2-5
Figure 3-1 Example USB Drive File Structure .........................................................................................3-4
Figure 4-1 Example USE Drive File Structure .........................................................................................4-2
Figure 4-2 VIU Software Load and Configuration Sequence...................................................................4-3
Figure 4-3 Example 1 Vital Input Wiring for Signal Lamp & Switch Monitoring .......................................4-4
Figure 4-4 Interlocking Equipment: Signal 1, Signal 2, and Signal 3.......................................................4-5
Figure 4-5 Signal 1, Heads A, B, and C...................................................................................................4-5
Figure 4-6 Signal 2, Heads A, B, and C...................................................................................................4-6
Figure 4-7 Switch 01 ................................................................................................................................4-6
Figure 5-1 VIU Monitoring Switches and Signals in an Interlocking ........................................................5-1
Figure 5-2 Typical Wayside Interface System Interconnect Diagram (Single VIU) .................................5-4
Figure 5-3 Typical Wayside Interface System Interconnect Diagram (Multiple VIUs) .............................5-5
Figure 6-1 VIU Front Panel Laptop PC Interface Connectors .................................................................6-2
Figure 6-2 DT Start-Up Screens ..............................................................................................................6-3
Figure 6-3 COMM Drop Down Menu .......................................................................................................6-4
Figure 6-4 VIU Input Status Overview Screen .........................................................................................6-4
Figure 6-5 Input Status Screen Indicator Descriptions ............................................................................6-5
Figure 6-6 Status Screen Input Indicator to Physical Input Connector Relationships .............................6-6
Figure 6-7 I/O Module Drop-Down Menu.................................................................................................6-6
Figure 6-8 DT Function Button and Menu Hierarchy ...............................................................................6-7
Figure 6-9 DT Communications Settings Dialog Box ..............................................................................6-8
Figure 6-10 List of Networked VIU Devices .............................................................................................6-9
Figure 6-11 Software Information Screen ..............................................................................................6-10
Figure 6-12 Viewing Input States Using System States Function .........................................................6-11
Figure 6-13 Logic State..........................................................................................................................6-11
Figure 6-14 Input Logic States Display ..................................................................................................6-12
Figure 6-15 Real-Time View of VIU Status Log .....................................................................................6-12
Figure 6-16 MAIN PROGRAM Menu Screen.........................................................................................6-13
Figure 6-17 Edit Button Location ...........................................................................................................6-14
Figure 6-18 Unlock Configuration Parameters Prompt..........................................................................6-14
Figure 6-19 PHYSICAL Configuration Screen .......................................................................................6-15
Figure 6-20 MODULE Configuration Screen .........................................................................................6-16
Figure 6-21 Slot 1 (VIU) & Slot 2 (VPF) Module Configuration Screens ...............................................6-16
Figure 6-22 Typical Set Parameter Screens..........................................................................................6-17
Figure 6-23 Password Enabled..............................................................................................................6-18
Figure 6-24 Password – Set Parameter Dialog Box ..............................................................................6-18

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Figure 7-1 Establishing WEB U/I Setup Parameters ...............................................................................7-1
Figure 7-2 Internet Explorer URL Line .....................................................................................................7-2
Figure 7-3 VIU Web Browser Login Screen.............................................................................................7-2
Figure 7-4 Web Browser Login Dialog Box..............................................................................................7-2
Figure 7-5 Web Browser Welcome Screen..............................................................................................7-3
Figure 7-6 Web Browser Initial Icons .......................................................................................................7-3
Figure 7-7 Status Icons ............................................................................................................................7-3
Figure 7-8 Icon Definitions .......................................................................................................................7-4
Figure 7-9 Standard VIU Non-Vital Parameter Update Buttons ..............................................................7-4
Figure 7-10 Standard VIU Non-Vital Parameter Update Confirmation Buttons.......................................7-4
Figure 7-11 Standard VIU Vital Parameter Update Buttons ....................................................................7-4
Figure 7-12 Edit Mode Reboot Indicator ..................................................................................................7-5
Figure 7-13 Value Change Rending Indicator .........................................................................................7-5
Figure 7-14 Invalid Entry Highlighted.......................................................................................................7-5
Figure 7-15 Invalid Entry Explanation Window ........................................................................................7-5
Figure 7-16 Initial Non-Vital Configuration Menu Screen ........................................................................7-6
Figure 7-17 Non-Vital Configuration Screen ............................................................................................7-6
Figure 7-18 ACSES II Network Configuration Menu................................................................................7-7
Figure 7-19 Diagnostic Log Configuration Screen ...................................................................................7-8
Figure 7-20 Diagnostic Log Verbosity Levels ..........................................................................................7-9
Figure 7-21 EMP-WIU Configuration Screen.........................................................................................7-10
Figure 7-22 Ethernet Configuration Screen (Laptop Tab) .....................................................................7-15
Figure 7-23 Ethernet Configuration Screen (Port One Tab) ..................................................................7-16
Figure 7-24 Ethernet Configuration Screen (Port Two Tab) ..................................................................7-17
Figure 7-25 Event Log Configuration Screen.........................................................................................7-18
Figure 7-26 GPS Configuration Screen .................................................................................................7-19
Figure 7-27 GPS Time Source Selection Menu.....................................................................................7-19
Figure 7-28 High Availability (Enabled) Configuration Menu .................................................................7-22
Figure 7-29 Serial Port Configuration Menu – Laptop Tab ....................................................................7-22
Figure 7-30 Serial Port Configuration Menu – Port One Tab.................................................................7-23
Figure 7-31 Site Info Configuration Screen – Edit Mode Locked...........................................................7-24
Figure 7-32 Site Info Configuration Screen – Edit Mode Unlocked .......................................................7-25
Figure 7-33 Site Info Edit Mode Reboot Prompt....................................................................................7-25
Figure 7-34 SNTP Configuration Screen ...............................................................................................7-26
Figure 7-35 TCP Port Configuration Screen ..........................................................................................7-28
Figure 7-36 Time Source (Enabled) Configuration Window ..................................................................7-30
Figure 7-37 Logs Screen........................................................................................................................7-30
Figure 7-38 Diagnostic Log – Basic View ..............................................................................................7-31
Figure 7-39 File Download Prompt ........................................................................................................7-31
Figure 7-40 File Save Screen ................................................................................................................7-32
Figure 7-41 File Opened in Notepad......................................................................................................7-32
Figure 7-42 Log View Drop Down Menu................................................................................................7-33
Figure 7-43 Diagnostic Log – Advanced View.......................................................................................7-33
Figure 7-44 Diagnostic Log Advanced Settings.....................................................................................7-34
Figure 7-45 Diagnostic Log – Trace Events View..................................................................................7-34
Figure 7-46 Maintenance Screen...........................................................................................................7-35
Figure 7-47 Class D Tests Screen.........................................................................................................7-36
Figure 7-48 System Time Screen ..........................................................................................................7-36
Figure 7-49 Date Field with Calendar Displayed ...................................................................................7-37
Figure 7-50 Time Field with Drop Down List of Times...........................................................................7-37
Figure 7-51 Status Screen .....................................................................................................................7-38
Figure 7-52 GPS Status Screen ............................................................................................................7-38
Figure 7-53 Health Status Screen..........................................................................................................7-39
Figure 7-54 Reports Screen...................................................................................................................7-39
Figure 7-55 Typical Configuration Report Screen .................................................................................7-40
Figure 7-56 Report Download Prompt ...................................................................................................7-41

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Figure 7-57 Report Save Screen ...........................................................................................................7-41
Figure 7-58 Typical Version Report Screen...........................................................................................7-42
Figure 8-1 The Diagnostic Drop Down Menu...........................................................................................8-6
Figure 8-2 DT Statistics............................................................................................................................8-6
Figure 8-3 Statistics Type Drop Down Menu ...........................................................................................8-7
Figure 8-4 Sniffer Screen .........................................................................................................................8-7

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LIST OF TABLES
Section Title Page
Table 1-1 Control, Indicator, and Connector Locations ...........................................................................1-7
Table 2-1 Laptop (Serial) Interface Connector Pin-outs (RS232)............................................................2-7
Table 2-2 Serial Interface Connector Pin-outs (RS232) – Top of Unit ....................................................2-8
Table 2-3 Ethernet Port Descriptions.......................................................................................................2-8
Table 2-4 Special ESSR Ethernet Port Connector Pin-outs (RJ45) ........................................................2-9
Table 2-5 GPS Port Connector Pin-outs................................................................................................2-10
Table 4-1 Aspect Codes Decoded By VIU...............................................................................................4-7
Table 8-1 VIU Status LED Indications .....................................................................................................8-3
Table 8-2 Possible VIU System Problems ...............................................................................................8-5

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NOTES, CAUTIONS, AND WARNINGS
Throughout this manual, notes, cautions, and warnings are frequently used to direct the reader’s
attention to specific information. Use of the three terms is defined as follows:
WARNING
INDICATES A POTENTIALLY HAZARDOUS
SITUATION WHICH,
IF NOT AVOIDED, COULD RESULT IN DEATH OR SERIOUS
INJURY. WARNINGS ALWAYS TAKE PRECE
DENCE OVER
NOTES, CAUTIONS, AND ALL OTHER INFORMATION.
CAUTION
REFERS TO PROPER PROCEDURES OR PRACTICES WHICH IF
NOT STRICTLY OBSERVED, COULD RESULT IN A POTENTIALLY
HAZARDOUS SITUATION AND/OR POSSIBLE DAMAGE TO
EQUI
PMENT. CAUTIONS TAKE PRECEDENCE OVER NOTES
AND ALL OTHER INFORMATION, EXCEPT WARNINGS.
NOTE
Generally used to highlight certain information rel
ating to the topic
under discussion.
If there are any questions, contact Siemens Mobility, Inc. Application Engineering.

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ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
Static electricity can damage electronic circuitry, particularly low voltage components such as the
integrated circuits commonly used throughout the electronics industry. Therefore, procedures
have been adopted industry-wide which make it possible to avoid the sometimes invisible
damage caused by electrostatic discharge (ESD) during the handling, shipping, and storage of
electronic modules and components. Siemens Mobility, Inc. has instituted these practices at its
manufacturing facility and encourages its customers to adopt them as well to lessen the likelihood
of equipment damage in the field due to ESD. Some of the basic protective practices include the
following:
•Ground yourself before touching card cages, assemblies, modules, or components.
•Remove power from card cages and assemblies before removing or installing modules.
•Remove circuit boards (modules) from card cages by the ejector lever only. If an ejector lever is
not provided, grasp the edge of the circuit board but avoid touching circuit traces or components.
•Handle circuit boards by the edges only.
•Never physically touch circuit board or connector contact fingers or allow these fingers to come in
contact with an insulator (e.g., plastic, rubber, etc.).
•When not in use, place circuit boards in approved static-shielding bags, contact fingers first.
Remove circuit boards from static-shielding bags by grasping the ejector lever or the edge of the
board only. Each bag should include a caution label on the outside indicating static-sensitive
contents.
•Cover workbench surfaces used for repair of electronic equipment with static dissipative
workbench matting.
•Use integrated circuit extractor/inserter tools designed to remove and install electrostatic-
sensitive integrated circuit devices such as PROM’s (OK Industries, Inc., Model EX-2 Extractor
and Model MOS-40 Inserter (or equivalent) are highly recommended).
•Utilize only anti-static cushioning material in equipment shipping and storage containers.
For information concerning ESD material applications, please contact the Technical Support Staff
at 1-800-793-7233. ESD Awareness Classes and additional ESD product information are also
available through the Technical Support Staff.

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GLOSSARY
TERM DESCRIPTION
AAR Association of American Railroads – An organization that establishes uniformity and
standardization among different railroad systems.
ACSES Advanced Civil Speed Enforcement System – A Vital Interface Unit that provides
functions according to Wayside Interface Unit (WIU) requirements as defined by the
Association of America Railroads (AAR). It also provides fun
ctions according to
ACSES Encoder requirements. Its dual function capability allows an ACSES train and
a train that is capable of interfacing with a WIU to obtain wayside vital information.
Aspect (Signal Aspect) The appearance of a fixed signal conveying an indication as viewed
from the direction of an approaching train. A cab signal conveying an indication as
viewed by an observer in the cab.
ATCS Advanced Train Control System –
A set of standards compiled by the AAR for
controlling all aspects of train operation.
BCP Base Communication Packet, or Base Station
CBTC Communications Based Train Control. An automated control system for railways that
ensures the safe operation of rail vehicles using data communication between various
control entities that make up the system.
CETC Centralized Electrification & Train Control
CDMA Code Division Multiple Access. Th
is is a form of spread spectrum signaling using
different codes on one or more channels.
Checksum A simple way to protect the integrity of data by detecting errors in data that are sent
through space (telecommunications) or time (storage). It works by adding up the basic
components of a message, typically the asserted bits, and storing the resulting value.
Anyone can later perform the same operation on the data, compare the result to the
authentic checksum, and (assuming that the sums match) conclude that the message
was most likely not corrupted.
Configuration
File
When changes are made to the default settings in the MCF (Master Configuration
File), the custom settings are maintained in the configuration file.
CRC Cyclic Redundancy Check. A type of function that takes an input of data stream of
any length and produces as output a value of a certain fixed size. The term CRC is
often used to denote either the function or the function's output. A CRC can be used
as a checksum to detect alteration of data during transmission or storage. CRCs are
particularly good at detecting common errors caused by noise in transmission
channels.
CTV Television Compatibility Box
DSU Data Service Unit

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TERM DESCRIPTION
DT Diagnostic Terminal. Siemens PC-based diagnostic software.
ECD External Configuration Device.
A serial EEPROM (Flash Memory) device used to
store site-specific configuration data (MCF, SIN, UCN, etc.) for the VIU.
EEPROM
Electrically Erasable Programmable Read-Only Memory. A type of non-volatile
memory used in computers and other electronic devices to store small amounts of
data that must be saved when power is removed. When larger amounts of static data
are to be stored, a specific type of EEPROM called a flash memory is used.
ELS Serial Link extenSion board.
EMP Edge Messaging Protocol.
A common message format used for edge integration.
Examples of integration edges are wireless transports and various messaging
systems that may be used by the various railroads (e.g., using EMP to communicate
between mobile applications
and back office applications using wireless
communications). EMP defines the message format, header, and operating rules
which facilitate interoperable message transmission, reception, decoding, and routing.
ESSR Ethernet Spread Spectrum Radio.
FRA Federal Railroad Administration. The purpose of FRA is to: promulgate and enforce
rail safety regulations; administer railroad assistance programs; conduct research and
development in support of
improved railroad safety and national rail transportation
policy; and consolidate government support of rail transportation activities.
GCP Grade Crossing Predictor.
GCS Geographic Configuration Suite. Used to program the VIU-20e MCF.
GMT The time as measured on the prime meridian running through Greenwich, England:
used in England and as a standard of calculation elsewhere. Also called Greenwich
Mean Time, Greenwich Civil Time, Universal Time
GOL Geographic Object Library. A collection of pre-configured track and signal elements
used by Siemens Geographic Configuration Suite software for building track layouts.
Each GOL object posses the necessary track element characteristics as defined by
the FRA rules.
GPS Global Positioning System.
HMAC Keyed-Hash Message Authentication Code. A type of message authentication code
(MAC) calculated using a specific algorithm involving a cryptographic hash function in
combination with a secret key.
HS Home Signal.
LCT Line Controller Task, A function of the Siemens Mobility, Inc™ Packet Switch
LCM Locomotive Communication Module. Radio located on board a locomotive.
LD Line Driver

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TERM DESCRIPTION
LED Light Emitting Diode.
LoMA Limits of Movement Authority. The control center's safety interlocking logic uses the
data from all trains to issue limits of movement authority (LoMA) and speed limits
to each tra
in, being careful to keep safe separation between trains. The train's
onboard computer monitors the LoMA and speed limit data against a
ctual train
location and speed to determine potential and actual unsafe conditions. If the train is
approaching the end of its LoMA or it is nearing its speed limit, the onboard computer
warns the engineer, who is expected to take appropriate action. If the train passes the
end of its LoMA, the on
board computer automatically signals for a safety brake
application to bring the train to a stop.
MCF Module Configuration File. Application specific configuration file. Defines how the VIU-
20e will operate in a specific application such as the Office Monitoring or Wayside
Interface applications. Contains default settings for configurable parameters.
MCP Mobile Communications Package
MEF Module Executable File. The VIU-20e executive software. Defines the general
operation of the VIU.
NMEA
National Marine Electronics Association. NMEA 0183 (or NMEA for short) is a
combined electr
ical and data specification for communication between marine
electronic devices such as echo sounder, sonar, Anemometer (winds speed and
direction), gyrocompass, autopilot, GPS
receivers and many other types of
instruments. It has been defined by, and is controlled by, the US-
based National
Marine Electronics Association.
The NMEA 0183 standard uses a simple ASCII, serial communications protocol that
defines how data is transmitted in a "sentence" from one "talker" to one "listener" at a
time. Through the use of intermediate expanders, a talker can have a unidirectional
conversation with multiple listeners, and using multiplexers, multiple sensors can talk
to a single computer port. Third-
party switches are available that can establish a
primary and secondary talker, with automatic failover if the primary fails.
OBC On-Board Computer.
OCG Office Communication Gateway. Communications traff
ic router, such as a packet
switch, that p
rovides the interface between the office monitoring system and the
communications infrastructure.
OSI Open Systems Interconnection
. A layered, abstract description for communications
and computer network protocol design. It is sometimes known as the OSI seven
layer model. From top to bottom, the OSI Model consists of the Application,
Presentation, Session, Transport, Network, Data Link, and Physical layers. A layer is
a collection of related functions that provides
services to the layer above it and
receives service from the layer below it.
PTC Positive Train Control.

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TERM DESCRIPTION
SIN Site Identification Number. The 12-digit ATCS address for the VIU equipment, entered
via the Web interface and stored in the ECD. The SIN has
the form
7.RRR.LLL.GGG.SS stored in binary
coded decimal, with each digit in one nibble.
The digit 0 is represented by “A” and 0 is used as a null byte.
SMA Sub-Miniature version A.
TCP/IP
Network
Transmission Control Protocol / Internet Protocol. The suite of communications
protocols used to connect hosts on the Internet. TCP/IP uses several protocols, the
two main ones being TCP and IP. TCP/IP is built into the UNIX operating system and
is used by the Internet, making it the de facto standard for transmitting data over
networks.
TMC Train Management Computer.
The CBTC Computer on board a locomotive that
interprets mess
ages from the WIU and controls the locomotive operations
accordingly.
TRM Transmission Radio Modem
TSR Temporary Speed Restriction
UCN Unique Check Number. A 32-bit CRC calc
ulated over the MCF, SIN and vital
configuration parameters. Used to verify that the configuration is correct. It is stored in
the ECD to detect file corruption.
UDP User Datagram Protocol. One of the core protoc
ols of the Internet protocol suite.
Using UDP, programs on networked computers can send short messages sometimes
known as datagrams (using Datagram Sockets) to one another.
UNS Unified Numbering System.
USB Universal Serial Bus. A serial bus standard to interface devices. USB was designed to
allow many peripherals to be connected using a single standardized interface socket
and to improve the plug-and-
play capabilities by allowing devices to be connected
and disconnected without rebooting the computer (hot swapping). Other convenient
features include providing power to low-consumption devices without the need for an
externa
l power supply and allowing many devices to be used without requiring
manufacturer specific, individual device drivers to be installed.
UTC Coordinated Universal Time.
VIU Vital Interface Unit. A device that monitors switch positions and signal aspects and
then generates vital status messages reflecting the current state of the monitored
equipment.
VLAN Virtual Local Area Network
VPF Vital Parallel Flashing (VPF) input circuit
. The VIU Master I/O circuit with 10 vital
inputs that runs appliance model l
ogic and detects steady and flashing inputs.
Identical Slave circuits provide10 additional vital inputs with similar functionality .

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TERM DESCRIPTION
VTP Virtual Local Area Network (VLAN) Trunk Protocol. A
Cisco proprietary Layer 2
messaging protocol that manages the addition, deletion, and renaming of VLANs on a
network-
wide basis. VTP reduces administration in a switched network. When you
configure a new VLAN on one VTP server, the VLAN is dis
tributed through all
switches in the domain. This reduces the need to configure
the same VLAN
everywhere.
WCM Wayside Communications Module. A radio, such as the MDS or Siemens ESSR
radios, located at a wayside and used to transmit vital status messages generated by
the VIU-20e to passing trains.
WIU Wayside Interface Unit. Term used to refer to the VIU in CBTC applications.
WSM Wayside Status Messages
. Messages in EMP format reflecting the status of vital
functions at a wayside location. These vital fun
ctions include signal aspects and
switch positions. These messages are generated by the VIU and are sent to the WCM
for transmission.