Rockwell Automation Allen-Bradley 1769-ASCII, User Manual

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Rockwell Automation Publication 1769-UM012B-EN-P - January 2014 41
Configure the 1769-ASCII Module Chapter 2
Connect to Both Channels of
the Module in Alternating
Mode This example program illustrates connecting the serial cable from your computer
to both channels of the 1769-ASCII module in alternating mode.
For more detailed information about the Alternate and Simultaneous modes, see
I/O Memory Mapping on page 71 .
To access the Logix Designer programs, see the Knowledgebase Technote #
64203 at
https://rockwellautomation.custhelp.com/app/answers/detail/a_id/
64203 .
TIP
See Connect the D-sub Connector Pins on page 18 for detailed information on
how to build the appropriate cable for the RS-232 connection between PC with
a serial port and the 1769-ASCII module D-sub connector.
TIP
If your computer does not have an RS-232 port, you can use a USB to RS-232
adapter.