Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 591)

Section 10B
9/Series Adapter Modules for
1771 and 1746 I/O Devices
10B-2
Figure 10B.1 shows the 1771 I/O ring adapter module.
Figure 10B.1
1771 I/O Ring Adapter
I/O RING
ADAPTER
ALLEN-BRADLEY
RECEIVER
TRANSMITTER
REMOTE
RESET
ACTIVE
ADAPTER
FAULT
I/O RING
FAULT
11086-I
The connectors used to make the fiber optic connections to the I/O ring are
listed in Table 10B.A. Each module connected to the system I/O ring has
an optical transmitter and receiver. Fiber optic cables connect transmitters
to receivers to form the I/O ring. Refer to Appendix A for additional
information on fiber optic cables and connectors.
Table 10B.A
1771 I/O Ring Adapter Fiber Optic Connectors
Connector on Digital I/O Remark Connected To
I/O (RED) Output Receiver on next module in I/O ring
I/O (BLACK) Input Transmitter on previous module in I/O ring
10B.1.1
1771 I/O Ring Adapter Fiber
Optic Connection