Rockwell Automation 1779-KP3R DATA HIGHWAY II - Manual (Page 35)

Installing the 1779-KP3
Communication Interface
Chapter 2
2Ć19
Important: The 1775–CBB cable assembly has one end that you can
configure. When making cables, note the location of the locking
connector tab on the module to be certain of the correct connector
position. The S4A and MX modules both have the locking tab on the
opposite side in comparison to the KP3. The connection between the S4A
and the KP3 module is a straight through cable in relation to pin 1 of the
connectors.
The 1779–CBC cable is shipped assembled at both ends.