Rockwell Automation 1779-KP3R DATA HIGHWAY II - Manual (Page 33)

Installing the 1779-KP3
Communication Interface
Chapter 2
2Ć17
Figure 2.10
Using an S4A, MX, and a KP3 for Running Backup Cabling
S4A KP3
Backup A
Backup B
KP3 S4A
Backup A
Pin 1
MX MX
Pin 1
Pin 1
Pin 1
XMT
REC
XMT
REC
1775-CM Cable Assembly
Backup Backup
Pin 1
Backup B
Pin 1
Pin 1
1775-CM Cable (2 feet)
1775-CM Cable (2 feet)
11010-I
1775-CBB or
1779-CBC Cable
1775-CBB or
1779-CBC Cable
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.
The 1775–CM cable assembly includes four cables: two for
transmit/receive connections for the MX modules, and two interconnect
cables that you can use to connect the KP3 modules to the MX modules.