Input and Output wiring guidelines
I/O terminal block functions, ratings and requirements
provides information and guidelines about the functions,
ratings, and requirements for the controller input and
output terminals, and Table 4 also references guidelines
for determining proper wire sizes and cable lengths.
In addition to the wiring guidelines in I/O terminal block
functions, ratings and requirements, observe these
guidelines when wiring expansion modules inputs and
outputs:
• Run all low-voltage wiring and cables separate from
high-voltage wiring.
• All input and output cables, regardless of wire size or
number of wires, should consist of stranded, insulated,
and twisted copper wires.
• Shielded cable is not required for input or output
cables.
• Shielded cable is recommended for input and output
cables that are exposed to high electromagnetic or
radio frequency noise.
• Inputs/outputs with cables less than 30 m (100 ft)
typically do not require an offset in the software setup.
Cable runs over 30 m (100 ft) may require an offset in
the input/output software setup.
M4-XPM Expansion Modules Installation Guide6
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