Rockwell Automation 1791-XXXX Discrete I/O AC and DC Block I/O Input and Output Modules - Manual (Page 48)

Installing Block I/O
Chapter 3
3-29
Connections
1791-16BC Series B Connector/Terminal
Connections
Designation Description Left Right
P
+24 +24V dc Power 1
Power
Connections
RET +24 dc Return 3
Connections
GND Chassis ground 2 1
R t I/O
BLU Blue wire - RIO 6
Remote I/O
Connections
CLR Clear wire - RIO 8
Connections
SHD Shield - RIO 7
I/O Connections
PLC: in 00 thru 07
SLC: in 00 thru 07
PLC: Input 00 thru 07
SLC: Input 00 thru 07
16, 18, 20, 22,
24, 26, 28, 30
Input
RET 1 dc input return 12, 14 2
Input
(G) 6
PLC: in 10 thru 17
SLC: in 08 thru 15
PLC: Input 10 thru 17
SLC: Input 08 thru 15
15, 17, 19, 21,
23, 25, 27, 29
RET 2 dc input return 11, 13 3
PLC: out 00 thru 07
SLC: out 00 thru 07
PLC: Output 00 thru 07
SLC: Output 00 thru 07
15, 13, 11, 9,
7, 5, 3, 1
Vdc 3 +24V dc output supply 19, 17 4
Output
RET 3 dc output return 21
Output
(G) 7
PLC: out 10 thru 17
SLC: out 08 thru 15
PLC: Output 10 thru 17
SLC: Output 08 thru 15
16, 14, 12,
10, 8, 6, 4, 2
Vdc 4 +24V dc output supply 20, 18 5
RET 4 dc output return 22
Not used
For internal test only;
not for customer use.
4, 5, 9, 10 29, 27, 26
No Conn
No internal connection;
customer can use.
30, 28, 25,
24, 23
1 Connect chassis ground to equipment grounding stud. These are not internally connected.
2 Terminals 12 and 14 are internally connected.
3 Terminals 11 and 13 are internally connected.
4 Terminals 17 and 19 must be externally connected by customer to accommodate amperage rating.
5 Terminals 20 and 18 must be externally connected by customer to accommodate amperage rating.
6 IN (G) = input module group.
7 OUT (G) = output module group.