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5. Communication Function Instruction
The pump supports standard modbus protocol (RTUmode), communication modes are
RS485 and USB. It can control the pump start/stop, direction and motor speed, and
can read the current running status.
USB communication mode: A USB cable is needed (one side is USB-A and the other
side is USB-B). Connect the pump with a computer through the USB interface.
Type-A connects computer USB interface
Type-B connects
KA (SS)
USB
interface
Type
Type-A
Type-B
Plug(male)
USB2.0
4 3 2 1
Type-A
1 2
4 3
Type-B
Connect with
computer
Connect with external control USB interface
RS485 communication: Connect A+ (pin5) from external control interface (as shown
in Picture) to T/R+ of RS485 module; and connect B- (pin4) to T/R- of RS485 module.
Users can control the pump working according with the communication protocol.
FCS KA (SS)
