Rockwell Automation T80004 Application Note Field Loop Configuration - Manual (Page 52)

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AN-T80004 Field Loop Configuration
Issue 10 Jun 13 AN-T80004 52
Free Wire Cables
I/O cables without FTA or VFTA plugs are available for most applications and are designed for
connection to user-designed terminations (terminal blocks, multicore sockets etc.). These have ident
markers on individual cores to show the function of each wire, with the ‘CORE’ text from the tables
below.
The wires are NOT colour coded and core colours will vary between batches or subcontracting
manufacturer. The core colours have not been standardised due to regional supply differences.
Instead, the idents should be used to distinguish between cores. Some cores have identical functions
and are shorted together at both ends (in proper use) as redundant wires. These wires have the same
ident and are interchangeable; there is no need to check which module pin is connected to each core.
The wiring tables for each type of free wire cable are shown below for reference.
TC-202/502/204/504 (40 Channel Input)
Channels 0 and 41 are internal reference channels and should not be connected.