The 170 ADI 340 00 TSX Momentum I/O base supports 16 discrete inputs. This section contains information about the mapping of the I/O data into input words.
The I/O base may be mapped as one input word, or as 16 discrete input points.
In order to correctly field wire the inputs and map the input data, you need to know which type of Momentum Adapter is mounted on the base. Adapters may either be IEC compliant or 984 Ladder Logic compliant.
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IEC Compliant
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984 Ladder Logic Compliant
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Momentum Processor Adapters
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All
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None
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Momentum Communication Adapters
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All, except
170 NEF 110 21
170 NEF 160 21
170 FNT 110 00
170 FNT 110 01
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170 NEF 110 21
170 NEF 160 21
170 FNT 110 00
170 FNT 110 01
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The figure below shows how data is mapped on the I/O base with an IEC Compliant adapter. When the I/O is mapped as discrete points (1x), the MSB is assigned to Pin 1 and the LSB is assigned to Pin 16. When the I/O is mapped as a word or register (3x), the MSB (bit 15) is assigned to Pin 16 and the LSB (bit 0) is assigned to Pin 1.
The figure below shows how data is mapped on the I/O base with a 984 Ladder Logic Compliant adapter. When the I/O is mapped as discrete points (1x), the MSB is assigned to Pin 16 and the LSB is assigned to Pin 1. When the I/O is mapped as a word or register (3x), the MSB is assigned to Pin 1(bit 15) and the LSB (bit 0) is assigned to Pin 16.
