Greetings All,
I have a quick question regarding the PV scaling parameters in regards to PID Settings. I searched through all the manuals I could search for at AB as well as the knowledge base, but didn't find any definitive answer to my hopefully easy question.
Here's the particulars:
Processor: 1756-L61 ControlLogix5561 Controller
AI Card: 1756-IF8 Module
Transmitter: 0 - 100" LT
Here's the config settings for Ch2 of the IF8 card via screen shot:
Here I set the Engineering Units for the 0 to 100" that relates to the 4 to 20mA. In the settings of the PID instruction I'm using... specifically the PV settings I'm kind of thrown off regarding the "unscaled" and "scaled" parameters. In other words I'm scaling the value via Ch2's AI config. What needs to go in the PID PV settings? Here's my lame guess:
Would this be correct? Any help or insight would be appreciated.
Regards,
Bobby
I have a quick question regarding the PV scaling parameters in regards to PID Settings. I searched through all the manuals I could search for at AB as well as the knowledge base, but didn't find any definitive answer to my hopefully easy question.
Here's the particulars:
Processor: 1756-L61 ControlLogix5561 Controller
AI Card: 1756-IF8 Module
Transmitter: 0 - 100" LT
Here's the config settings for Ch2 of the IF8 card via screen shot:
Here I set the Engineering Units for the 0 to 100" that relates to the 4 to 20mA. In the settings of the PID instruction I'm using... specifically the PV settings I'm kind of thrown off regarding the "unscaled" and "scaled" parameters. In other words I'm scaling the value via Ch2's AI config. What needs to go in the PID PV settings? Here's my lame guess:
Would this be correct? Any help or insight would be appreciated.
Regards,
Bobby