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Connect the input/output wires to the block, Stranded (cu) with 3/64 inch insulation, Red strip must be on top of ribbon cable – Rockwell Automation 1791P-XXXX CompactBlock Distributed I/O on PROFIBUS DP Series D I.I. User Manual

Page 9

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CompactBlock Distributed I/O on PROFIBUS DP Series D 9

Publication

1791P-IN002B-EN-P - October 2003

4. Plug the expansion cable into both the base and expansion modules.

5. Replace the expansion covers on both modules.

Connect the Input/Output Wires to the Block

Two sets of VDC+ and GND power pins are located on each terminal (one
for each bank of 8 points) except on the 1791P-4B4P module. The following
figures show the wiring information for both sinking and sourcing wiring.
Input and Output wiring use up to 14AWG (2mm

2

) stranded (Cu) with 3/64

inch insulation.

IMPORTANT

The expansion cable can only be connected to the
modules such that the red stripe on the cable is on top as
shown below.

WARNING

Use supply wires suitable for 30°C above surrounding
ambient.

Status

Network

Profibus DP

Module

Status

0 1 2 3 4 5 6 7

CompactBlock

I/O

1791P-8V8P

8 INPUTS / 8 OUTPUTS - DC POWER

Allen-Bradley

0 1 2 3 4 5 6 7

Red strip must be on top of ribbon cable.

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