I am trying to setup rs485 to my Huanyang VFD and have followed the instructions given on the wiki but am not getting any pulses out of the smoothie board. I have a ‘smoothieboard V1.0a’ and have updated the firmware to build edge-24da5ce.
I am monitoring with my CRO with 1V horiz div and 25us vert div.
-> 3.3V is good
-> rx is 0V and no pulses when M3 S3000 or M5 sent
-> tx is 3.3V and no pulses when M3 S3000 or M5 sent
config is setup exactly as shown on wiki:
spindle.type modbus # set the spindle type to modbus/RS485
spindle.vfd_type huanyang # set the VFD type, this is necessary because each inverter uses its own commands
spindle.rx_pin 2.6 # TX pin for the soft serial
spindle.tx_pin 2.4 # RX pin for the soft serial
spindle.dir_pin 2.5 # RS485 is only half-duplex, so we need a pin to switch between sending and receiving
Does anyone have any suggestions?