Rockwell Automation T7150A Regent+Plus Communications Modules RS-232, RS-422 and RS-485 - Manual

ICS Regent + Plus
®
PD-7002
Industrial Control Services 1
Communications Modules
RS-232, RS-422 and RS-485
(T7150A)
Issue 1, March, 06
Communications modules provide a serial communications
interface between the controller and external equipment.
Communications modules are commonly used to connect the
controller to the computer running the W
INTERPRET
application, serial printers, man-machine interfaces,
distributed control system gateways, and other peer-to-peer
controllers.
Features
· Two isolated serial ports per module.
· Supports RS-232, RS-422 and RS-485 standards.
•
Regent R2, Guarded Peer-Link, and Modbus protocols.
· Front panel indicators on each module show communications
status and transmit/receive activity.
· TÜV certified for safety, Risk Class 5.
Module Operation
A block diagram of a typical communications module is shown
in Figure 1.
Communications modules are serial receiver-transmitters
that provide an electrical interface for RS-232, RS-422, and
RS-485 communications equipment.
Each communications module receives power from all three of
the processor modules. A power-sharing circuit in each of the
communications modules receives the power from the three