1. Mounting and Connecting the Master Station
Issue 06/15 Publication PUB059-002-00 17 of 136
1.10 P3W WMA Modbus Connections
The P3W WMA connects to a Modbus RTU device enabling a Modbus host to connect through the
Pakscan wireless system to the Modbus device. The connection between the Modbus device and the
P3W WMA should be made using a shielded network cable with 1 twisted pair of wires. Suitable cable
conforms to the specification for RS-485 networks. This cable length will depend on the baud rate
chosen for communications.
The Communications cable and appropriate glands for the P3W coordinator will need to be sourced
locally, according to site requirements. Connect the Communications cable as shown below, the
connector labelled SK3A is used on the P3W WMA.
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