Rockwell Automation 1791-32AO SERIES B 32 Input AC Block I/O Module - Manual (Page 10)

Installation Instructions
Block I/O
Cat. No. 1791-32A0 Series B
10
Indicators
PLC SLC
IN IN
00
01
02
03
04
05
06
07
10
11
12
13
14
15
16
17
COMM
STATUS
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
COMM
STATUS
00
01
02
03
04
05
06
07
10
11
12
13
14
15
16
17
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
G G+1
IN IN
G G+1
Indicator Description
COMM OFF
ON
Flashing Communication not established
Communication established
Processor in Program mode
STATUS OFF
ON
Flashing Normal
Error (hardware or software), block power low
COMM FAIL – communication cable disconnected, 100ms between valid frames, no
more than 255 valid frames between valid frames addressed to block, 20ms idle
time exceeded.
COMM and STATUS will alternately flash when processor restart lockout is selected, a fault has occurred and the processor
is communicating with the block.
Fusing
The block I/O module is internally fused to protect the module. No external
power fusing is required.