ProSoft Technology MVI56E-GSC/ GSCXT - Manual (Page 134)

Reference MVI56E-GSC ♦ CompactLogix or MicroLogix Platform
User Manual Enhanced Generic ASCII Serial Communication Module
Page 134 of 140 ProSoft Technology, Inc.
May 9, 2014
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).
RS-232: Null Modem Connection (No Hardware Handshaking)
This type of connection can be used to connect the module to a computer or field
device communication port.
Note: For most null modem connections where hardware handshaking is not required, the Use
CTS Line parameter should be set to N and no jumper will be required between Pins 7 (RTS) and 8
(CTS) on the connector. If the port is configured with the Use CTS Line set to Y, then a jumper is
required between the RTS and the CTS lines on the port connection.