Rockwell Automation 1756-XXXX ControlLogix Analog I/O Modules - Manual (Page 75)

Publication 1756-UM009C-EN-P - December 2010 75
Non-isolated Analog Voltage/Current Input Modules (1756-IF16, 1756-IF8) Chapter 4
1756-IF8 Differential Voltage Wiring Example - 4 Channels
Not used
Not used
Not used
Not used
Not used
Not used
Not used
RTN
Not used
Not used
Not used
Not used
RTN
Not used
Not used
Not used
Not used
Not used
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
IN-0
IN-1
IN-2
IN-5
IN-3
IN-6
RTN
IN-7
IN-4
i RTN-0
i RTN-7
i RTN-4
i RTN-6
RTN
i RTN-5
i RTN-1
i RTN-2
i RTN-3
Shield Ground
Shield Ground
Channel 0
Channel 3
+
–
+
–
40913-M
NOTES:
1. Use the table when wiring your module in differential mode
2. All terminals marked RTN are connected internally.
3. If multiple (+) or multiple (-) terminals are tied together, connect that tie point to a RTN
terminal to maintain the module’s accuracy.
4. Terminals marked RTN or iRTN are not used for differential voltage wiring.
5. Do not connect more than two wires to any single terminal.
IMPORTANT: When operating in two channel, high-speed mode, only use channels 0 and 2.
Channel Terminals
Channel 0 IN-0 (+) & IN-1 (-)
Channel 1 IN-2 (+) & IN-3 (-)
Channel 2 IN-4 (+) & IN-5 (-)
Channel 3 IN-6 (+) & IN-7 (-)