i am Currently using a Stepper online BLD-510B the communication mode uses the standard Modbus protocol. It uses a dual-line serial communication based on RS485, and the physical interface adopts a conventional 3-pin 2.54 wiring terminal (A+, GND, B-) which is easy to connect in series. The transmission mode is RTU, and the verification mode is CRC, with the CRC starting word being
FFFFH. The data mode is 8-bit asynchronous serial, with 1 stop bit and no parity bit. It supports multiple communication speeds (see parameter table for details) Function parameter support 03H multi-register read, 06H
single register write.
Site address: 00: Broadcast address
1-250: User address
251-255: Special address, not available to users
it would be great to get some help with this to aid me along How do i Connect this to the Arduino UNO or Minima , and maybe Some example Starter Code, i can post the Modbus registers i need to access, thank everyone so so much.
