Serial output ASCII commands signal problem

Using Arduino Project Guidance
1

I am currently working on use the arduino R3 with a RS422 sheild to control Mdrive motor. I use the "Serial.write("SL 51200^M")" commands in order to get the motor rotate but it didn't work. The motor accepts ASCII commands.I think the command don't pass the port to the motor but I don't know how to set up the code. Pls help me about it :confused: .

xiaojiji.ino (1.79 KB)

2

Try Serial, instead of Serial.write.
Is the motor connected to hardware serial (Serial) or to the software serial port (mySerial)?

3

I've tried it but it doesn't work either. I think the commands just run pass the Arduino board not the rs485 shied but I'm not really sure..

4

groundFungus:
Try Serial, instead of Serial.write.
Is the motor connected to hardware serial (Serial) or to the software serial port (mySerial)?

My serial .

5 
Serial.write("SL 51200^M");

Isn't that the command to the motor? Shouldn't it go out mySerial?

Can you post a schematic of your wiring?

6 
    XIU==0;

That doesn't look right. Or useful, if it is right.

7

ufo135792:
I've tried it but it doesn't work either. I think the commands just run pass the Arduino board not the rs485 shied but I'm not really sure..

Your first post said you had a RS-424 shield, This post says you have a RS-485 shield. They are not the same. Which it it and post a link to the board specifications?

Paul