Rockwell Automation T7310 User Manual

ICS Regent +Plus

PD-7009

I/O Transceiver Modules

I/O transceiver modules provide an interface between the
processor modules in the controller chassis and the I/O modules in
the I/O chassis. Three I/O transceiver modules are installed in the
three left slots of each I/O chassis.

Features

• Three modules per I/O chassis for triple redundant operation.

®

I/O XCVR

(T7310)

Issue 1, September, 04

• Interfaces processor modules to I/O modules.

• Hot replaceable.

• Front panel indicators on each module show active and fault

status.

• TÜV certified for safety, Risk Class 5.

I/O transceiver modules are triple redundant and can be removed
and replaced without interrupting system operation.

Module Operation

A block diagram of a typical I/O transceiver module is shown in
Figure 1.

Each I/O transceiver module communicates with one of the three
processor modules in the controller assembly. During I/O
Safetybus communications, the control logic on the I/O transceiver
module reads the I/O chassis’ identification code from the I/O
commands and compares them to the chassis’ identification switch
settings. Appropriately addressed I/O commands are directed
along the chassis’ backplane Safetybus to the I/O modules.

Industrial Control Services (Issue 1) 1

I/O Transceiver Modules (T7310)

Figure 1. Block Diagram of I/O Transceiver Module.

I/O module responses are buffered and transmitted back along the
chassis’ backplane Safetybus to the I/O transceiver, and from the
I/O transceiver along the I/O Safetybus cable to the processor
modules.

Triplicated power is cabled into the I/O chassis and distributed to
the I/O transceiver modules. Each I/O transceiver module
receives power from one of the three I/O power supplies. Power
regulation circuits in the I/O transceiver modules provide the
necessary regulated voltages for the module’s electronics. Should a
single power supply fail, an interlock signal from the failed power
supply will cause the I/O transceiver it normally powers to shut
down.

2 (Issue 1) Industrial Control Services