User's Manual

Power supply cable

The terminal blocks are shown viewed from the front with the

chassis assembly in its normal position on the wall.

Terminal block J3

Pin 1 +12V Power

Pin 2 Ground Power

Power supply 12 V ± 5% (regulated) 2.5 A/min

COM1 RS485/422 serial port wiring

Terminal block J7

Pin 1 Rx+ Input

Pin 2 Rx- Input

Pin 3 Tx+ Output

Pin 4 Tx- Output

Pin 5 Ground Ground

For an RS485 multi drop (half duplex) connection, only Tx+, Tx-

and ground are connected. Otherwise, as the unit is a peripheral,

the connections must be crossed over: Rx on the MorphoAccess

is connected to Tx on the host and Tx on the MorphoAccess

connected to Rx on the host.

Electrical interfaces