Programming Instructions

RS485 communication bus connections Page 10/40

Communication programming instructions

III. RS485 communication bus connections

COOLTouch

has an RS485 communication port to connect it to a computer equipped with a 485 port and

communication software to record the measurement values, alarms and different states of the device.

Connection to a computer USB port

 Use a 3-wire cable.

 Pass the cable through a cable gland.

 Wire AA’ (n°3) of USB/485 converter to RS485 (A) (31).

 Wire BB’ (n°4) of USB/485 converter to RS485 (B) (32).

 Wire C (n°5) of USB/485 converter to PWR (C) (18)

 Tighten the cable gland to seal.

 Blue (Terminal n°3): AA’ RS485

 White (Terminal n°4): BB’ RS485

 Black (Terminal n°5): GND RS485

Configuration: All switches on "ON”

Respect the bus wiring.

A USB/RS485 converter is recommended to connect the SYCLOPE COOLTouch

to a computer. Please

refer to converter documentation to realize the connection.

Reference Name

INF1021 Converter USB => 485

Devices can be chained respecting the order of cables (Parallel wiring).