
Publication CIG-WD001A-EN-P - October 2003
1756 ControlLogix I/O Modules 5-5
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2324
2526
2728
2930
3132
3334
3536
1. All terminals with the same name are connected together on the module. For example, DC
COM can be connected to either terminal marked GND-1.
2. When you daisy chain to other RTBs, always connect the daisy chain as shown above. Do not
connect more than 2 wires to any single terminal at any time.
3. This wiring example shows a single voltage source.
4. If separate power sources are used, do not exceed the specified isolation voltage.
+
–
Daisy chain
to other RTBs
DC COM
Group 0 Group 0
Group 1 Group 1
IN-1
IN-3
IN-5
IN-7
GND-0
IN-9
IN-11
IN-13
IN-15
GND-1
IN-17
IN-19
IN-21
IN-23
IN-25
IN-27
IN-29
IN-31
IN-0
IN-2
IN-4
IN-6
GND-0
IN-8
IN-10
IN-12
IN-14
GND-1
IN-16
IN-18
IN-20
IN-22
IN-24
IN-26
IN-28
IN-30
NOTES:
12
34
5
6
7
8
910
11
12
1314
1516
1718
19
20
+–
1. All terminals with the same name are connected together on the module. For
example, DC COM can be connected to any terminal marked GND-1.
2. When you daisy chain from a group to another RTB, always connect the daisy chain to
the terminal directly connected to the supply wire, as shown above.
3. This wiring example shows a single voltage source.
4. If separate power sources are used, do not exceed the specified isolation voltage.
Daisy chain to other RTBs
Group 0Group 0
Group 1Group 1
IN-1
IN-3
IN-5
IN-7
GND-0
IN-9
IN-11
IN-13
IN-15
GND-1
IN-0
IN-2
IN-4
IN-6
GND-0
IN-8
IN-10
IN-11
IN-14
GND-1
DC COM
NOTES:
Do not connect
more than 2 wires to any single terminal.
1756-IB32/B 1756-IC16
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2324
2526
2728
2930
3132
3334
3536
+
–
+
–
Shield ground
Channel 0
Channel 3
IN-0
IN-1
IN-2
IN-3
IN-7
RTN
IN-4
IN-5
IN-6
IN-15
IN-8
IN-9
IN-10
IN-11
RTN
IN-12
IN-13
IN-14
i RTN-0
i RTN-1
i RTN-2
i RTN-3
i RTN-7
RTN
i RTN-4
i RTN-5
i RTN-6
i RTN-15
i RTN-8
i RTN-9
i RTN-10
i RTN-11
RTN
i RTN-12
i RTN-13
i RTN-14
Shield ground
1. Use the following chart when wiring your module in differential mode
2. When operating in 4 channel, high speed mode, only use channels 0, 2, 4 and
6
3. All terminals marked RTN are connected internally.
4. If multiple (+) or multiple (-) terminals are tied together, connect that tie point to
terminal to maintain the module’s accuracy.
5. Terminals marked RTN and i RTN are not used for differential voltage wiring.
This channel : Uses these inals: This channel: Uses these terminals:
Channel 0 IN-0 (+) & IN-1 (-) Channel 4 IN-8 (+) & IN-9 (-)
Channel 1 IN-2 (+) & IN-3 (-) Channel 5 IN-10 (+) & IN-11 (-)
Channel 2 IN-4 (+) & IN-5 (-) Channel 6 IN-12 (+) & IN-13 (-)
Channel 3 IN-6 (+) & IN-7 (-) Channel 7 IN-14 (+) & IN-15 (-)
NOTES:
term
6. Do not connect more than 2 wires to any single terminal.
12
34
56
78
910
1112
1314
1516
1718
1920
2122
2324
2526
2728
2930
3132
3334
3536
IN-0
IN-10
IN-1
IN-9
IN-2
IN-8
IN-5
IN-3
IN-6
RTN
IN-7
IN-4
IN-13
IN-12
IN-14
IN-11
RTN
i RTN-0
i RTN-7
i RTN-4
i RTN-6
i RTN-8
i RTN-9
i RTN-10
i RTN-11
RTN
i RTN-12
i RTN-13
RTN
i RTN-5
i RTN-1
i RTN-2
i RTN-3
IN-15
i RTN-14
i RTN-15
Shield ground
Channel 0
Channel 3
Jumper
wires
i
i
A
NOTES:
1.
2. All terminals marked RTN are connected internally.
3. A 249 current loop resistor is located between IN-x and i RTN-x terminals.
4. If multiple (+) or multiple (-) terminals are tied together, connect that tie point to a RTN terminal to
maintain the module’s accuracy.
5. Place additional loop devices (e.g. strip chart recorders, etc.) at the A location in the current loop.
6. Do not connect more than two wires to any single terminal.
IMP ORTANT: When operating in 4 ch annel, high sp eed mo de, only use channels 0, 2, 4 and 6.
Th is
chan nel :
Uses t hese terminals: Th is
ch ann el:
Uses t hese t erm inals:
Channel 0 IN-0 (+), IN-1 (-) & i RTN-0 Channel 4 IN-8 (+), IN-9 (-) & i RTN-8
Channel 1 IN-2 (+), IN-3 (-) & i RTN-2 Channel 5 IN-10 (+), IN-11 (-) & i RTN-10
Channel 2 IN-4 (+), IN-5 (-) & i RTN-4 Channel 6 IN-12 (+), IN-13 (-) & i RTN-12
Channel 3 IN-6 (+), IN-7 (-) & i RTN-6 Channel 7 IN-14 (+), IN-15 (-) & i RTN-14
2-Wire
Transmitter
A
+
–
4-Wire
Transmitter
24V dc
Shield ground
+
–
Channel 6
i
A
Use the table below when wiring your module in differential current mode.
1756-IF16 – Differential Current Applications 1756-IF16 – Differential Voltage Applications
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