I'm still having trouble getting this PID (FB41) block working.
Attached you will find the program that I have written so far.
I was wondering if you guys can take a look at it and offer some suggestions as to what I might be doing wrong.
I input a 4-20mA signal and nothing happens at the output of the block.
I've checked my analog Input and output cards, they are set up correctly for 4-20 mA. They are functioning properly.
I've been trying to change MAN_ON to a False state (Automatic Mode)without much luck. In DB1 I changed my view so that I could edit items within it.
I then saved the block and downloaded it to the plc. (Downloaded everything)
When I call the block up again, when I go online with the PLC, it seems that it turns back to a True state. Am I missing something?
My 1st concern is with OB100 COM_RST. Is this causing all my values to change (reset to default) with in OB35 (FB41)? In this case how would this block function? It will not perform integration.
If I kept this PID in manual mode I would have to scale and unscale my inputs and outputs, right?
Thank you for any help and guidance you give.
Attached you will find the program that I have written so far.
I was wondering if you guys can take a look at it and offer some suggestions as to what I might be doing wrong.
I input a 4-20mA signal and nothing happens at the output of the block.
I've checked my analog Input and output cards, they are set up correctly for 4-20 mA. They are functioning properly.
I've been trying to change MAN_ON to a False state (Automatic Mode)without much luck. In DB1 I changed my view so that I could edit items within it.
I then saved the block and downloaded it to the plc. (Downloaded everything)
When I call the block up again, when I go online with the PLC, it seems that it turns back to a True state. Am I missing something?
My 1st concern is with OB100 COM_RST. Is this causing all my values to change (reset to default) with in OB35 (FB41)? In this case how would this block function? It will not perform integration.
If I kept this PID in manual mode I would have to scale and unscale my inputs and outputs, right?
Thank you for any help and guidance you give.