Ovation 1C31169G01 User manual

11/98 i U3-1021
Ovation Link Controller (LC) User’s Guide
Section Title Page
Westinghouse Proprietary Class 2C
Section 1. Introduction
1-1. Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-1.1. System Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-1.2. Link Controller Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-2. Contents of this Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1-3. Additional Reference Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Section 2. Link Controller Hardware
2-1. Section Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2. Module Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2.1. Base Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2.2. Electronics Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2.3. Personality Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-3. Module Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2-4. Interface Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-4.1. Terminal Block Wiring Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-4.2. Applications Port Terminal Block Field Connections. . . . . . . . . . . . . . . . . 2-9
2-4.3. Applications Port (J2) Field Connections . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2-4.4. Generic Cabling Schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
2-4.5. Cable Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
2-5. Jumpers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
2-6. External Personal Computer Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
2-6.1. Computer Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
2-6.2. Cable Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
2-6.3. Jumper Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
2-6.4. Programming Port (J1) Signal Connections . . . . . . . . . . . . . . . . . . . . . . . 2-29
2-7. Link Controller Address Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
2-8. Diagnostic LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
Section 3. Link Controller Initialization
3-1. Section Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-2. Software Needed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-3. Link Controller Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3-3.1. Procedure 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3-3.2. Procedure 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

U3-1021 ii 11/98
Table of Contents, Cont’d
Section Title Page
Westinghouse Proprietary Class 2C
Section 4. Link Controller Programming and Operation
4-1. Section Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-2. LC Programming Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-2.1. Application Programming for the LC Module. . . . . . . . . . . . . . . . . . . . . . . 4-3
4-3. Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Appendix A. Link Controller Programming Examples
A-1. Section Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
A-2. Example Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A-3. Function Declarations (LC.H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
A-4. Example LC Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
Glossary
Index

2/99 1-1 U3-1021
Westinghouse Proprietary Class 2C
Section 1. Introduction
1-1. Overview
This manual describes the configuration and operation of the Ovation Link
Controller module in an Ovation Process Control System.
1-1.1. System Overview
The Ovation Distributed Control System provides modulating control, sequential
control, and data acquisition for a variety of system applications. This system
consists of a configurable mix of functional Input/Output (I/O) modules (described
in “Ovation I/O Reference Manual” (R3-1150)) that communicate on the I/O bus to
the Ovation Controller.
An Ovation I/O module consists of an electronics module and a personality module.
These modules are “plug-in” components with built-in fault tolerance and
diagnostics. They are able, by combining different personality modules with
electronics modules, to operate at a wide range of signals, and perform a multitude
of functions.
The Ovation I/O modules are locked into Base Units (two modules per Base Unit).
These Base Units are housed in the Controller cabinets where they are mounted on
DIN rails and wired to the appropriate field devices (see example of Controller
cabinet in Figure 1-1 and detailed cabinet descriptions in “Ovation Planning and
Installation”(U3-1000).
The modular components consist of the following:
•Electronics module
•Personality module
•Base Units (containing the field terminations)

U3-1021 1-2 2/99
Westinghouse Proprietary Class 2C
Figure 1-1. Ovation Controller Cabinet Example (illustrating modules)
Front Back
Branch 1 Branch 2 Branch 3 Branch 4
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
81
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
IOIC Cards (1 and 2)
Controller
Controller
Power Supply Power Supply
Power Distribution
Module
Two
modules
per base
Terminator
ROP
Panel
Note
Transition
The branches (1 - 8) are used to define bus address locations (this includes
(cover removed)
Power
Switch
(one per
controller)
Breaker / Switch Breaker / Switch
an Extended cabinet).

2/99 1-3 U3-1021
Westinghouse Proprietary Class 2C
1-1.2. Link Controller Overview
The Link Controller (LC) module provides the Ovation Controller with a serial data
communications link to a third-party device or system. This communication is done
via a serial RS-232, RS-422, or RS-485 data link.
Two serial ports are provided:
•The Applications port provides an interface to a third-party device or system.
•The Programming port provides an interface to an IBM-compatible personal
computer’s COM1 or COM2 serial port (see Section 2).
The LC processor is similar to an IBM-compatible personal computer and uses a
modified IBM-PC Basic Input/Output System (BIOS) and the DOS operating
system. Because the LC’s architecture and operating system are compatible with an
IBM-compatible personal computer, the LC can execute programs written using
commercially available compilers.
Due to its flexible and open design, the LC can be used for various applications:
•The LC can provide online plant performance calculations.
•Programs designed to execute in an IBM-PC environment can communicate
with the Controller and the Ovation system using the LC.
•The LC is applicable for use in CE Mark-certified systems.

1-2. Contents of this Document
U3-1021 1-4 2/99
Westinghouse Proprietary Class 2C
1-2. Contents of this Document
This document is organized into the following sections:
•Section 1. Introduction describes the Ovation Link Controller module and its
uses. This section also describes the contents of this manual and lists additional
manuals that might be helpful to the user.
•Section 2. Link Controller Hardware provides information about the
hardware and the wiring used to provide communication between an Ovation
Controller and a third-party device via the Link Controller module.
•Section 3. Link Controller Initialization describes the procedure used to
initialize the Ovation Link Controller module.
•Section 4. Link Controller Programming and Operation describes different
programming approaches, and provides application notes that are helpful to the
Link Controller user.
•AppendixA.LinkControllerProgramming Examplesprovidesexamplesof
application programs written for the Link Controller in C language.

1-3. Additional Reference Documentation
2/99 1-5 U3-1021
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1-3. Additional Reference Documentation
Table 1-1 lists additional reference documentation that may be helpful while using
this document.
Table 1-1. Reference Documents
Document
Number Title Description
R3-1100 Ovation Algorithms Reference
Manual Provides detailed descriptions of LC (SLC) algorithms.
R3-1140 Ovation Record Types
Reference Manual Discusses Ovation process points and record fields.
R3-1150 Ovation I/O Reference Manual Provides information about all the Ovation
I/O modules.
U3-1000 Planning and Installing Your
Ovation System Provides guidelines and procedures for planning and installing an Ovation system.
U3-1032 Ovation Controller User’s
Guide Describes the configuration and use of the Ovation Controller.
U3-1040 Ovation Control Builder User’s
Guide Provides general information on Control application programming, including
procedures to add text algorithms to an
application.

2/99 2-1 U3-1021
Westinghouse Proprietary Class 2C
Section 2. Link Controller Hardware
2-1. Section Overview
This section describes the Ovation Link Controller module, the wiring, the optional
jumpers, and the diagnostic LEDs used to provide communication between an
Ovation Controller and a third-party device or system. This communication is done
via a serial RS-232, RS-422, or RS-485 data link.
Prior to initializing and using the Link Controller module, verify that the hardware
has been properly configured.
2-2. Module Description
This section describes the Ovation Link Controller module which consists of three
parts (refer to Figure 2-1):
•Base Unit (containing the field terminations)
•Electronics Module
•Personality Module
2-2.1. Base Unit
The base unit (containing two terminal blocks) mounts onto a DIN rail. Each
base unit accommodates two I/O modules. If you use only one I/O module, you
still must use a base unit that contains two terminal blocks.
The footprint of the base unit (containing Electronic and Personality module) is:
27.9 cm Long (11 in)
12.7 cm Wide (5 in)
16.5 cm High (6.5 in)
2-2.2. Electronics Module
The Electronics module (configured by adding the appropriate Personality
module) fits into the base unit. There is one Electronics module group for the
Link Controller Module:
•1C31166G01 provides for communication to a third-party device or system.

2-2. Module Description
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Westinghouse Proprietary Class 2C
2-2.3. Personality Module
The Link Controller Personality module provides two (J1 and J2) male DB9
connectors for the desired serial links (see Figure 2-1).
Thereare twoPersonalitymodule groups forthe LinkController Module. Selectthe
appropriate group for the desired serial link.
Group One Personality Module
Group One (1C31169G01) provides for an RS-232 serial link.
•J1 Port is an RS-232 Programming Port which is used to interface to a Personal
Computer (used for keyboard input, CRT display, and file transfer functions).
•J2 Port is an RS-232 Applications Port (in CE Mark certified systems, the
application port cable must be less than 10 meters (32.8 ft)).
Group Two Personality Module
Group Two (1C31169G02) provides for an RS-485/RS-422 four-wire full duplex
serial link.
•J1 Port is an RS-232 Programming Port which is used to interface to a Personal
Computer.
•J2 Port is an RS-485 Applications Port (also may be used as an RS-422 serial
link).
— The J2 Port transmitter has a software controlled tri-state enable input (TX-
ENA). TX-ENA must be asserted (high or logic one) if the J2 Applications
port is to transmit RS-485/RS-422 serial data. It is the responsibility of the
Link Controller’s application program to ensure that TX-ENA is asserted
whenever serial data is transmitted from the J2 port.
— The application program must use Bit 1 of the Applications port UART
Modem Control register (MCR) to control the state of the UART’s RTS/
output. MCR is an eight-bit register mapped to the LC processor I/O address
03FCH.

2-2. Module Description
2/99 2-3 U3-1021
Westinghouse Proprietary Class 2C
— RTS/ directly controls the state of the TX-ENA signal as shown below:
Iftwo-wirehalf duplexcommunication isdesired,connect theLinkController’s
base unit terminal block input terminals to the output terminals (that is, connect
RX- to TX-, and connect RX+ to TX+). See Figure 2-5.
Caution
If the LC’s RS-485 output terminals are
connected to the RS-485 input terminals, the RS-
485 receiver is enabled whenever the applications
program enables the RS-485 transmitter. This
means that the RS-485 receiver can receive the
databeingtransmittedbytheRS-485transmitter.
The applications program must be able to handle
this situation.
Installing Personality Module into Base Unit
The Personality module (used to configure the Electronics module) fits into the base
unit beside the appropriate Electronics module. Note that the Personality module is
installed in the base unit first. Then, the Electronics module is installed and
interlocks with the Personality module. The blue corner latches on the Electronics
module secure both modules into the base unit.
The wires from the customer field devices are connected to the terminal block in the
base unit (see Figure 2-2).
The wiring connections to the terminal block for each combination of Electronics
module and Personality module are printed on each Personality module and are
illustrated in each module description in the following sections.
Note
Besurethat each wireopeninginthe terminal
block is fully open before inserting the wire.
This will ensure that the wire is clamped
securely when the screw is tightened.
MCR Bit 1 UART RTS/ Output State TX-ENA State RS-485 Transmitter Output State
0 1 0 Tri-stated (disabled)
1 0 1 Enabled

2-2. Module Description
U3-1021 2-4 2/99
Westinghouse Proprietary Class 2C
Figure 2-1. Link Controller Modules (Top View)
1 2 3 4 5 6 7 8 9101112131415161718 1 2 3 4 5 6 7 8 9101112131415161718
1 2 3 4 5 6 7 8 91011121314151617
A B C
1 2 3 4 5 6 7 8 9101112131415161718 1 2 3 4 5 6 7 8 9101112131415161718
1 2 3 4 5 6 7 8 91011121314151617
A B C
P C E I 1 2 3 4 5 6 7 8
DIN Rail
Module Base Connectors
DIN Rail Mounting Screw
Terminal Block Connections
A, B, C
Status LEDs
J1 Programming Port
Electronics Module
Base-to-Base Connector Terminal Block Connections
A, B, C
Base Unit
Personality Module
Spare Fuse
Locations
“A“ Side of Base Unit “B” Side of Base Unit
Module Latches
J2 Applications Port

2-3. Module Specifications
2/99 2-5 U3-1021
Westinghouse Proprietary Class 2C
2-3. Module Specifications
Table 2-1. Link Controller Module Specifications
Description Value
Number of serial ports 2
Applications serial port
(In CE Mark certified systems, the Link
Controller must be used only in
communicationfaulttolerantsystems.Thatis,
communication retries must be tolerated.)
Signals are galvanically isolated from logic common.
This port may be interfaced via the Personality module’s J2 male DB9
connector (refer to Table 2-2 or Table 2-3)
OR
via the Base unit terminal block (refer to Figure 2-2).
(1C31169G01) RS-232 signal levels: Note that standard IBM PC/AT
COM1 port pin assignments are present at the J2 DB9 connector
OR
(1C31169G02) RS-485/RS-422 signal levels: four wire link,
RS-485/RS-422 transmitter/receiver. Resistor terminations are user
selectable.
Applications serial port baud rate 300, 600, 1200, 2400, 4800, 9600, or 19200
Applications serial port dielectric isolation:
(Port to logic) 1000 V AC peak/DC
Programming serial port Signals are not galvanically isolated from logic common.
RS-232 signal levels (TX/ and RX/)
This port must be interfaced via the Personality module’s J1 male DB9
connector (refer to Table 2-7)
Programming serial port baud rate 19200 baud (default)
OR
9600 baud (user selectable option)
Processor 80C186EC 16-bit
Program RAM 640 Kbytes
Dual port RAM 4 Kwords (data interface between the I/O bus and the Link Controller
module)
Module power 3 W typical
4 W maximum
Operating temperature range 0 to 60°C (32°F to 140°F)
Storage temperature range -40°C to 85°C (-40°F to 185 °F)
Humidity (non-condensing) 0 to 95%

2-4. Interface Connections
U3-1021 2-6 2/99
Westinghouse Proprietary Class 2C
2-4. Interface Connections
2-4.1. Terminal Block Wiring Information
The field connection to the LC module can be made either at the nine pin J2
connector of the personality module or at the terminal block of the base unit. It is
common for RS-422 and RS-485 communication, because the cable length is
typically longer, for the connection to be made as field wiring rather than as a pre-
manufactured cable. The terminal block connection is convenient for these cases.
Each Personality module has a simplified wiring diagram label on its side, which
appears above the terminal block. This diagram (see Figure 2-2) indicates how the
wiring from the field is to be connected to the terminal block in the base unit. The
following table lists and defines the abbreviations used in the diagram.
Abbreviation Definition
BAU Programming port baud rate select jumper
BT. Link Controller boot-up option select jumper
COM * Applications port signal common reference
CTS * RS-232 Clear To Send (Input)
DCD * RS-232 Data Carrier Detect (Input)
DSR * RS-232 Data Set Ready (Input)
DTR * RS-232 Data Terminal Ready (Output)
Earth GND * Application port cable assembly shield connection (for locally grounded shields).
Connects to the Base Unit DIN rail.
RES A14 = RS-485/RS-422 receive data termination resistor (tie to RX+ (A15) if used)
B14 = RS-485/RS-422 transmit data termination resistor (tie to TX+ (B15) if used)
RI * RS-232 Ring Indicator (Input)
RTS * RS-232 Request To Send (Output)
RX/ * RS-232 Receive Data (Input)
RX+ * RS-485/RS-422 Receive Data (Input)
RX- * RS-485/RS-422 Receive Data (Input)
SEL B8 = Programming port baud rate select jumper
C8 = Link Controller boot-up option select jumper

2-4. Interface Connections
2/99 2-7 U3-1021
Westinghouse Proprietary Class 2C
SH * Applications port cable assembly shield connection
(for remotely grounded shields) (for non-CE Mark certified systems)
TX/ * RS-232 Transmit Data (Output)
TX+ * RS-485/RS-422 Transmit Data (Output)
TX- * RS-485/RS-422 Transmit Data (Output)
* Applications port
Abbreviation Definition

2-4. Interface Connections
U3-1021 2-8 2/99
Westinghouse Proprietary Class 2C
Notes
1. Do not use unmarked terminal block locations.
2. Shield terminals (SH) are not connected in CE Mark certified systems.
Figure 2-2. Terminal Block Connections for the Link Controller Personality Module
1. COM is the galvanically isolated common terminal of the Applications Port.
2. Use an overall shield conductor for the Applications Port cable:
A. To ground the cable shield locally, connect the cable shield to terminal C17 (Earth Ground).
B. To ground the cable shield remotely, connect the cable shield to terminal C16 (SH).
3. Connect a wire jumper for the following:
A. To boot-up from an external IBM-compatible PC, connect a jumper between SEL and BT.
B. To set Programming Port baud rate to 9600 (default is 19200), connect a jumper between SEL and BAU.
4. For RS-485/RS-422 four wire applications, connect a wire jumper for the following:
A. To use a transmitter termination resistor, connect a jumper between RES (B14) and TX+ (B15).
B. To use a receiver termination resistor, connect a jumper between RES (A14) and RX+ (A15).
RS-232 Applications: (1C31169G01)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
A RI CTS RX/ DCD
B BAU SEL DSR RTS TX/ DTR
C BT. SEL COM SH Earth
GND Earth GND
RS-485/RS-422 Four Wire Applications: (1C31169G02)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
A RES RX+ RX-
B BAU SEL RES TX+ TX-
C BT. SEL COM SH Earth
GND Earth GND
Notes
For a four wire RS-485/RS-422 communications network, a receiver termination resistor is recommended
if the receiver is located at the end of the communications link. A transmitter termination resistor is
recommended if the transmitter is at the end of the communications link and if the transmitter is tri-stated
(disabled) when data is not being transmitted. Otherwise, a transmitter termination resistor is not necessary.

2-4. Interface Connections
2/99 2-9 U3-1021
Westinghouse Proprietary Class 2C
2-4.2. Applications Port Terminal Block Field Connections
Non-CE Mark Certified Systems
Figure 2-3. Terminal Block RS-232 Interface (1C31169G01) (Non-CE Mark)
Com
RI
CTS
DSR
RTS
RX/
DCD
TX/
DTR
SH
Earth GND
Com
RI
CTS
DSR
RTS
RX/
DCD
TX/
DTR
SH
Earth GND
Remote Grounding
Local Grounding
Base Unit Terminal Block
Base Unit Terminal Block
Third Party Device
Third Party Device

2-4. Interface Connections
U3-1021 2-10 2/99
Westinghouse Proprietary Class 2C
Figure 2-4. Terminal Block RS-485/RS-422 Four-Wire Serial Interface (1C31169G02)
(Non-CE Mark)
Com
RES
RX+
RX-
RES
TX+
TX-
SH
Earth GND
Com
RES
RX+
RX-
RES
TX+
TX-
SH
Earth GND
Remote Shield Grounding
Local Shield Grounding
Base Unit Terminal Block
Base Unit Terminal Block
Third Party Device
Third Party Device
Add jumper if parallel
termination resistor is desired.
Add jumper if parallel
termination resistor is desired.
Com
TX+
TX-
RX+
RX-
Com
TX+
TX-
RX+
RX-

2-4. Interface Connections
2/99 2-11 U3-1021
Westinghouse Proprietary Class 2C
Figure 2-5. Terminal Block RS-485 Two-Wire Serial Interface (1C31169G02)
(Non-CE Mark)
Com
RES
RX+
RX-
RES
TX+
TX-
SH
Earth GND
Com
RES
RX+
RX-
RES
TX+
TX-
SH
Earth GND
Remote Shield Grounding
Local Shield Grounding
Base Unit Terminal Block
Base Unit Terminal Block
Third Party Device
Third Party Device
Add jumper if parallel
termination resistor is desired.
Add jumper if parallel
termination resistor is desired.
Com
TX+/RX+
TX-/RX-
Com
TX+/RX+
TX-/RX-
Note
When using a two-wire RS-485 communication network, a termination resistor is recommended
if the LC is located at the end of the communication link. To use the termination resistor,
connect a jumper between RES (B14) and TX+ (B15) at the terminal block.

2-4. Interface Connections
U3-1021 2-12 2/99
Westinghouse Proprietary Class 2C
CE Mark Certified Systems
Figure 2-6. Terminal Block RS-232 Interface (1C31169G01) (CE Mark)
Com
RI
CTS
DSR
RTS
RX/
DCD
TX/
DTR
SH
Earth GND
Local Grounding
Base Unit Terminal BlockThird Party Device
All field wiring must be braid-shielded and grounded at the entry point of the cabinet using the
Note
recommended hardware (refer to “Cable Guidelines” in U3-1000).
See note.

2-4. Interface Connections
2/99 2-13 U3-1021
Westinghouse Proprietary Class 2C
Figure 2-7. Terminal Block RS-485/RS-422 Four-Wire Serial Interface (1C31169G02)
(CE Mark)
Com
RES
RX+
RX-
RES
TX+
TX-
SH
Earth GND
Local Shield
Base Unit Terminal BlockThird Party Device Add jumper if parallel
termination resistor is desired.
Com
TX+
TX-
RX+
RX-
Grounding
All field wiring must be braid-shielded and grounded at the entry point of the cabinet using the
Note
recommended hardware (refer to “Cable Guidelines” in U3-1000).
See note.