MVI56-MCM ♦ ControlLogix Platform Reference
Modbus Communication Module
Page 108 of 159 ProSoft Technology, Inc.
July 24, 2008
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.
RS-232: Null Modem Connection (Hardware Handshaking)
This type of connection is used when the device connected to the module
requires hardware handshaking (control and monitoring of modem signal lines).
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