User manual

PID Loop Operation
(DL450 Only)
Maintenance
and Troubleshooting
8--20
PID Loop Operation (DL450 only)
DL405 User Manual, 4th Edition, Rev. A
Using DirectSOFT is the simplest way to setup the parameters. The DL450 PID
parameters can be setup either offline or online while developing the user program.
The parameters will be loaded to V--memory as the program is loaded into the PLC.
If the PID parameters are setup or changed while the PLC is connected to the
programming computer, this can only be done in Program Mode.
To begin the PID setup, open an edited program with DirectSOFT, then click on PLC
> Setup > PID to access the Setup PID dialog which is pictured below.
First type the beginning address in the PID Table Address dialog. After the address
has been entered, the memory range will appear. Also, entering the number of PID
loops (1 to 16) will set the total V--memory range for the number of loops entered.
After the V--memory address has been entered, the necessary PID parameters for a
basic loop operation for each loop can be setup with the dialogs made available.