Wiring
Bus
Communication between CH536 and THS04 is done by Modbus on RS485.
On CH536 a bus is dedicated to that communication: J9 FBus1
This is based on three wires:
plus
;
minus
;
reference (circle)
Vout is not used. (cf fig.1)
On THS04, those three signals are:
Rx+/Tx+
;
Rx-/Tx-
;
GND
(cf fig.2)
Power supply
In addition to communication signals, THS04 requires power supply.
X201 to be connected to GND of THS04
X200 to be connected to 24V~ of THS04
Fig.1
Fig.2
