ICP DAS USA GW-5492 User manual

GW-5492/GW-5493
User’s Manual v1.0
ICP DAS BACnet to Modbus Gateway

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Warranty
All products manufactured by ICP DAS are under warranty regarding defective materials for a period of
one year from the date of delivery to the original purchaser.
Warning
ICP DAS assumes no liability for damages resulting from the use of this product. ICP DAS reserves the
right to change this manual at any time without notice. The information furnished by ICP DAS is
believed to be accurate and reliable. However, no responsibility is assumed by ICP DAS for its use, or
for any infringements of patents or other rights of third parties resulting from its use.
Copyright
All rights are reserved by ICP DAS Co., Ltd. 2012.
Trademark
The names used for identification only may be registered trademarks of their respective companies.
Document Revision
Version
Author
Date
Description of Changes
1.01
Eugene
2012/03/20
First Released Revision

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Table of Contents
1. General Information................................................................................................................4
1.1 BACnet Introduction...............................................................................................4
1.2 About GW-5492..................................................................................................... 4
1.3 About GW-5493..................................................................................................... 4
1.4 Hardware Specification.......................................................................................... 4
2. Hardware................................................................................................................................6
2.1 Pin Assignment...................................................................................................... 6
2.2 LED Indication.......................................................................................................7
2.2.1 Power LED.......................................................................................................7
2.2.2 Module Status indicator LED............................................................................. 7
3. Web Based Configuration Tool ............................................................................................... 8
3.1 Overview............................................................................................................... 8
3.2 Device Selection.................................................................................................... 8
3.3 Using Web-based Configuration Tool..................................................................... 8
3.4 Tab menu of Configuration Tool........................................................................... 11
3.4.1 System........................................................................................................... 11
3.4.2 Modbus.......................................................................................................... 11
3.4.3 BACnet........................................................................................................... 11
3.4.4 Modbus/BACnet Mapping............................................................................... 11
3.5 System tab .......................................................................................................... 12
3.5.1 System Process ............................................................................................. 13
3.5.2 Network Settings ............................................................................................ 13
3.5.3 Serial Port Settings......................................................................................... 13
3.5.4 Import/Export/Updating Firmware ................................................................... 14
3.5.5 Change User Name & Passsword................................................................... 14
3.6 Modbus tab ......................................................................................................... 15
3.6.1 Devices addition............................................................................................. 15
3.6.2 Devices list..................................................................................................... 17
3.7 BACnet tab.......................................................................................................... 19
3.7.1 BACnet basic information configuration........................................................... 19
3.7.2 BACnet Object Types and instance settings.................................................... 20
3.8 Modbus/BACnet Mapping tab.............................................................................. 21

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1. General Information
1.1 BACnet Introduction
BACnet (Building Automation and Control Networking) protocol has been designed specifically to
meet the communication needs of building automation and control systems for applications such as
heating, ventilating, air-conditioning control…etc. The GW-549x gateways contains a large number of
BACnet objects (AI, AO, AV, BI, BO, BV, MSI, MSO, MSV) gives you flexibility in mapping Modbus RTU
registers to any combination of BACnet objects. Multiple BIBBs (DS-RP-B, DS-RPM-B, DS-WP-B,
DS-WPM, DS-COV-B…etc.) are supported. All the data transfer is configurable using a standard Web
browser.
1.2 About GW-5492
GW-5492 is a fully configurable universal Modbus RTU to BACnet/IP gateway. The GW-5492
includes BACnet/IP Server and Modbus RTU Master which is used to make Modbus RTU devices
accessible on a BACnet network.
1.3 About GW-5493
GW-5493 is a fully configurable universal Modbus RTU to BACnet/IP gateway. The GW-5493
includes BACnet/IP Server and Modbus TCP Client which is used to make Modbus TCP devices
accessible on a BACnet network.
1.4 Hardware Specification
GW-5492
GW-5493
System
CPU
32-bit
SDRAM
64 MB
Flash
64 MB
COM1
RS-232 (RxD, TxD, GND); Non-isolation
COM2 RS-485 (D+, D-)2500 VDC;
isolated
Not use
Ethernet
10/100Base-TX Ethernet Controller
Protocol
Modbus
Modbus RTU Master
Modbus TCP Master
BACnet
BACnet/IP Slave
BACnet Objects
AI, AO, AV, BI, BO, BV, MSI, MSO, MSV (Maximum: 200 each)

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BIBB DS-RP-B, DS-RPM-B, DS-WP-B, DS-WPM-B, DS-COV-B,
DM-DDB-B, DM-DOB-B, DM-DCC-B, DM-TS-B, DM-UTC-B,
DM-RD-B
Environmental
Dimensions (W x L x H)
91mm x132mm x 52mm
Operating Temp.
-25 ~ +75 °C
Storage Temp.
-30 ~ +85 °C
Humidity
5_90% PH, non-condesing
Power Input Range
+10V to +30+10V to +30VDC
Power Consumption
4.8W (0.2A @ 24VDC)

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2. Hardware
2.1 Pin Assignment
Pin
Name
Description
1
F.G.
Firm Ground
2
GND
Ground of power supply
3
+VS
V+ of power supply (+10V to +30VDC unregulated)
4
TxD
TxD of COM3 (RS-232)
5
RxD
RxD of COM3 (RS-232)
6
Data+
Data+ of COM2 (RS-485)
7
Data-
Data- of COM2 (RS-485)
8
GND
Ground of COM1 (RS-232)
9
TxD
TxD of COM1 (RS-232)
10
RxD
RxD of COM1 (RS-232)

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2.2 LED Indication
GW-5492/GW5493 provides two LEDs to indicate what situation is in the GW-5492/GW-5493.
They are described as follows.
2.2.1 Power LED
The GW-5492/GW-5493 needs +10 ~ +30 VDC power input and consumes 4.8W. The Power LED
will be turn on after applying power and it will be flashing two times per second.
2.2.2 Module Status indicator LED
The LED indicates the communication status of the GW-5492/GW-5493. The following
description shoes the conditions of error status.
Green light flashes: BACnet Client is communicating with GW-5492/GW-5493
Red light flashes: Time out error on Modbus end

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3. Web Based Configuration Tool
This chapter is to describe the web structure, software operating interfaces, and configuration of
BACnet and Modbus mapping.
GW-5492/GW-5493 provides Web-based configuration for the BACnet and Modbus settings. The
functions include:
System information and configuration
Network and COMPort settings
Management and settings of Device’s Points (Address) for Modbus RTU Master and TCP
Client
BACnet configuration and management
BACnet Instance and Modbus Device point Mapping management
3.1 Overview
This document is to describe the web structure, software operating interfaces, and configuration of
BACnet and Modbus mapping.
GW-5492/GW-5493 provides Web-based configuration for the BACnet and Modbus settings. The
functions include:
System information and configuration
Network and COM Port settings
Management and settings of Device’s Points (Address) for Modbus RTU Master and TCP
Client
BACnet configuration and management
BACnet Instance and Modbus Device point Mapping management
3.2 Device Selection
GW-5492: BACnet/IP (Server) to Modbus RTU (Client) Gateway
GW-5493: BACnet/IP (Server) to Modbus TCP (Client) Gateway
3.3 Using Web-based Configuration Tool
Connect the GW-549x to network, and use standard web browser (Internet Explorer, Mozilla Firefox)
to launch the user interface. The default link and network settings are as followed:
Web Address: http://192.168.255.1

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IP Address: 192.168.255.1
Subnet Mask: 255.255.0.0
Gateway: 192.168.0.254
For security reason, user will have to login with user name and password before entering the
configuration pages. The default user name and password are admin and admin.
Figure 1. Logon screen
Screen opened as image shown in Figure 2, if success login. Select a hardware to enter a
correspond page.

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Figure 2. Gateway selection page

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3.4 Tab menu of Configuration Tool
The configuration tool had divided into four sections System, Modbus, BACnet, and
Modbus/BACnet Mapping. Please refer to the following clause for detail information.
3.4.1 System
System information and settings consist of
Daemon (Modbus and BACnet) status and operations (start or stop)
Import or export of configuration file
Network settings
COM Port: COM1 and COM2 serial ports settings (only for GW-5492).
Firmware Updating
User name and password configuration
3.4.2 Modbus
Modbus Master Configuration consists of
Add or delete slave devices
Modbus protocol mode settings (RTU mode for GW-5492 and TCP Mode for GW-5493)
Add or delete device points
Point settings, including slave device’s address, data type and so on.
3.4.3 BACnet
BACnet Server Configuration consists of
BACnet/IP Port Setting
Management of the BACnet basic information
Max Object Instance settings (support up to 200 objects each type)
3.4.4 Modbus/BACnet Mapping
Definition and management of the mapping table between Modbus Device’s Address and BACnet
Object Instance

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3.5 System tab
As shown in Figure 3, the system tab provides an operation mode, a network setting, a serial port
settings, import/export function, firmware updating, and user account settings.
1. System Process: Monitors the Modbus and BACnet Daemon running status, and operate its’
state (start or stop)
2. Network Settings: LANs are provided for either BACnet/IP or Modbus TCP protocol.
3. Serial Port Settings: The configuration consists of two serial ports COM1 (RS-485) and COM2
(RS-232) settings. Two serial ports are provided for Modbus RTU protocol.
4. Import/Export/Updating Firmware: Import or export of configuration file and updating firmware.
5. Change User Names & Password: Modify the current user name and password.
Figure 3. System tab

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3.5.1 System Process
Figure 4 shows the System Process frame. The Process column is a list of supported Daemons’
names and the Operations column shows each Daemon’s status. The Start/Stop buttons are able to
start/stop Daemon by clicking.
Figure 4. System Process
3.5.2 Network Settings
Network Settings consists an Ethernet LAN settings provided for either BACnet/IP or Modbus TCP
protocol.All information isn’t saved until clicking the Save Settings button.
Figure 5. Network Settings
3.5.3 Serial Port Settings
The configuration consists of two serial ports COM2 (RS-485) and COM3 (RS-232) settings. Two
serial ports are provided for Modbus RTU protocol. All information isn’t saved until clicking the Save
Settings button.

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Figure 6. Network Settings
3.5.4 Import/Export/Updating Firmware
Figure 7 shows the Config Import / Config Export / Upload Firmware / Update Firmware
configuration settings. The mapping configuration information is able to export and store to a .cvs file
by clicking the “Config Export” button (the template of the .csv file as shown in the appendix). The
configuration information is able to restore from a specific format of the .cvs file by choosing the file
path and importing the file by clicking “Config Import” button.
The current firmware version is showed. The firmware can also be updated from a .fw file
downloaded from ICP DAS by choosing the file path and click “Upload Firmware” to upload file to
device. After .fw file uploaded, click “Update Firmware” button to update firmware. After firmware
updated, please restart the GW-549x and User Interface.
Figure 7. Import/Export/Updating Firmware
3.5.5 Change User Name & Password
The section provides an interface which allows user to modify the user name and password.
Figure 8. Change User Name & Password

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3.6 Modbus tab
The Figure 9 shows the Modus operation and configuration. The detail description as follows:
1. Devices addition
2. Devices list
3. Modbus RTU (GW-5492) or Modbus TCP (GW-5493) settings
4. Point ID and address settings
5. Operation buttons
Figure 9. Modbus tab
3.6.1 Devices addition
a. Click Devices as shown in Figure 10.
b. The protocol type has already defined when selecting hardware. RTU for GW-5492 and TCP
for GW-5493. Please refer to Figure 10 and 11.
c. Click Save button to add and save a new Modbus device.

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Figure 10. Devices addition and RTU configuration
Modbus RTU configuration as shown in Figure 10
ID: Any valid string and number to represent a Modbus Device
COM Port: COM2 or COM3
DeviceID: This number is often referred to unit number or slave ID. The number must be
equal to the remote slave device setting.
Modbus TCP configuration as shown in Figure 11
Figure 11. TCP configuration
ID: Any valid string and number to represent a Modbus Device
TCP Address: Remote slave Device IP address
Port: Remote slave Device Port number. The default port number is 502.
Unit: This number is often referred to unit number or slave ID

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3.6.2 Devices list
a. Select a Device in the Devices list as shown in Figure 12 (the string with the shadow)
b. The sub frame on the right shows selected Device information.
Figure 12. Device and point information
Point management
a. As shown in Figure 13, input a point name and click Add button to add a new point.
b. Fill this point information, the detail description as follows:

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a
b
Figure 13. Point management
Point Address: Remote device address is referred to the specific Modbus device
Count: Address count. The number of address blocks are read/written at a time
Type: The types of registers in Modbus devices include Coils, Discrete Input, Input Register and
Holding Register
Type Define: Data type of this point, including BIT, CHAR, UCHAR, INT16, UINT16, INT32,
UINT32, FLOAT and DOUBLE.
Sampling: Polling period for this point. The minimum unit is ms.
TimeOut: Time out for waiting
ScaleFactor and Intercept: Scaling applies the formula y=mx+b. When reading from the slave, the
raw data as read is multiplied by the scale factor, and then the offset is added to produce the
resulting Present Value. (Present Value = raw data value * ScaleFactor + Intercept)
Low: The minimum threshold of present value
Hi: The maximum threshold of present value
Read/Write: Set this point as writable or read only
Del：Delete current point

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3.7 BACnet tab
The Figure 14 shows the BACnet Device configuration. The detail description as follows:
1. BACnet basic information and configuration
2. BACnet Object Types and max instance settings
Figure 14. BACnet tab
3.7.1 BACnet basic information configuration
Figure 13 shows the BACnet basic information, consisting of Protocol, Communication and Device
Object properties settings.

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Figure 15. BACnet basic information
Port: BACnet Port. Default port is 47808 (0xBAC0)
ID: Device_Identifier property, range from 0 to 4194302
Name: The device name showed on BACnet network.
Retry: Number_Of_APDU_Retries property
Timeout: APDU_Timeout property
UTC_Offset: The time offset from Coordinated Universal Time
Location: Location property
Description: Object_ Description property
3.7.2 BACnet Object Types and instance settings
The BACnet Gateway supports 10 types of standard BACnet Objects including Analog Input,
Analog Output, Analog Value, Binary Input, Binary Output, Binary Value, Multistate Input, Multistate
Output, Multistate Value and Device. Figure 15 shows the 9 types of BACnet Objects, the 3-column
sub fame consisting of Type, Maximum, and Instance number.