Rs-232 - ProSoft Technology MVI56-PNPM User Manual

Reference

5.3.2 RS-232

When the RS-232 interface is selected, the use of hardware handshaking
(control and monitoring of modem signal lines) is user definable. If no hardware
handshaking will be used, the cable to connect to the port is as shown below:
RS-232: Modem Connection
This type of connection is required between the module and a modem or other
communication device.
The "Use CTS Line" parameter for the port configuration should be set to 'Y' for
most modem applications.
ProSoft Technology, Inc.
January 2, 2008
MVI56-PNPM ♦ ControlLogix Platform
Phantom Network Protocol Master Communication Module
Page 67 of 91