MBWrite Status -7001, Error occurs when the variable value becomes negative.
I have an error when I connect Modbus via COM3, the status code on MBWrite is -7001. Anybody know what is meaning on it?
Actually, MBWrite function block is connected with variables (dint) which sometimes sends negative values, and when any of the variable value becomes negative, the error bit becomes true.
The MBConnect is valid.
Please help me out, how to handle this.