Momentum Sales & Marketing Modbus Plus 170 PNT Series - Manual (Page 18)

Assembling Adapter and I/O Base
18 870 USE 103 00 May 2001
Connections Between the Adapter and I/O Base
Overview This section explains the connections between a Communication Adapter and an I/
O base.
Physical
Connections A Communication Adapter can be snapped directly onto a Momentum I/O base,
making connections at three points:
l The plastic snap extensions on the two sides of the adapter unit fit into the two
slots on the sides of the I/O base
l The ATI connectors on the two units mate together
Clips lock the adapter in place. The clips can be released with a common
screwdriver to remove the adapter.
Electrical
Connections Each adapter connects to the internal communication connector of its I/O base. The
adapter receives its operating voltage from the I/O base through this internal
connection.
The adapter monitors its voltage and goes offline to the Modbus Plus network if the
voltage is not within tolerance.