RS485 CNC I/O Module

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STDRS485 CNC I/O Module

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Mode:Full

License

：

GPL 3.0

Creation time:2022-04-08 22:47:53Update time:2022-09-01 00:35:14

Open the Design Drawing

Description

This an RS485 Modbus CNC I/O Module designed for use with the 6 Pack Universal CNC Controller. It can be used to control RS485 spindle VFDs. The currently firmware supports Huanyang spindles with both the original and newer protocols.

RS485 Control is very robust and allow both precise speed control as well as direction control. The firmware constantly monitors the performance of the spindle and can stop your job if the spindle working properly.

Configuring for FluidNC

# module Socket #3
Huanyang:
  uart:
    txd_pin: gpio.26
    rxd_pin: gpio.16
    rts_pin: gpio.4
    baud: 9600
    mode: 8N1
  modbus_id: 1
  tool_num: 0
  speed_map: 0=0% 0=25% 6000=25% 24000=100%

#Module Socket #3

Huanyang:
  uart:
    txd_pin: gpio.14
    rxd_pin: gpio.15
    rts_pin: gpio.13
    baud: 9600
    mode: 8N1
  modbus_id: 1
  tool_num: 10
  speed_map: 0=0% 0=25% 6000=25% 24000=100%

Buying assembled from JLCPCB

They will only assemble one side. You should specifiy the top side. You must purchase and solder the 12 pin header on the bottom. It is a standard 0.100" (2.54mm) pitch header. You can buy snap off style many places or the exact part here. LCSC part number C225487

You also need to buy the mating terminal block (Cixi Kefa Elec KF2EDGK-3.5-3P) from LCSC
Both those parts are on the BOM of the schematic.

PCB Specs

You can use all of the defaults. I typically change the solder mask to black for 6 Pack modules.

Material:FR4
Layers: 2
Thickness: 1.6mm
Copper Weight: 1oz