Rockwell Automation 1771-KA2 Communication Adapter Module - Manual (Page 14)

Station Hardware
Chapter 2
2-4
Figure 2.4
Module Connection Summary
Data Highway
Processor Cable
(cat.no. 1771-CN, -CO, -CR)
“Program Panel”
or “Interface”
Socket on
Processor
Data Highway Cable
(User-Assembled)
Program Panel Interconnect Cable
(Cat. no. 1772-TC)
Industrial Terminal System
(cat. no. 1770-T1 and T2)
10863-I
Data Highway Connector
The upper connector of the module accepts the 15-pin Data Highway
dropline cable. Through this connection, a single KA2 module can
communicate with as many as 63 other Data Highway stations.
Module transmitting and receiving circuitry on this channel are
transformer-coupled to the Data Highway link. This design permits
differential transmission of data with high common-mode noise immunity.
Electrically, transformer coupling provides isolation between module
logic circuitry and the Data Highway cable.
Program Interface Connector
The middle outlet on the module connects to an industrial terminal system
(cat. no. 1770-T1, -T3), or to a second KA2, or to a 1771-KG series B
module.