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Installing the PC56 Embedded PC
PC56-HIST-xxxxLX ♦ ControlLogix Platform
Setup Guide
In-Rack PC with Data Historian
Page 14 of 29
ProSoft Technology, Inc.
December 6, 2010
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).