Allen-Bradley PLC-5

Publication 1785-UM012D-EN-P - July 2005
Communicating with Remote I/O 6-25
Bit Layout Diagrams for the First Word Allotted to a Remote I/O Rack or an
Extended-Local I/O Rack
This Bit Corresponds to
Fault Bits
00 first 1/4 rack
starting I/O group 0
01 second 1/4 rack
starting I/O group 2
02 third 1/4 rack
starting I/O group 4
03 fourth1/4 rack
starting I/O group 6
Present Bits
08 first 1/4 rack
starting I/O group 0
09 second 1/4 rack
starting I/O group 2
10 third 1/4 rack
starting I/O group 4
11 fourth1/4 rack
starting I/O group 6
00010203040506070809101112131415
Not Used
Not Used
Fault BitsPresent Bits
N15:14