7 APPLICATION INSTRUCTIONS
7.18 PID Instruction
751
7
Troubleshooting
Error code
If an error occurs in the set value of a control parameter or the data used for PID operation, the operation error flag (SM0)
turns on and an error code is stored in SD0 according to the error content.
For the error code, refer to the User's Manual (Hardware Design, Maintenance and Inspection) of the CPU module used.
Precautions
For the PID process value (PV), normal measurement data needs to have been read before execution of PID operation.
Especially when performing PID operation over the input value of analog input blocks, note the conversion time.
To Next Page
Loading...
