Trouble on Using DO in CODESYS
Posted: 03 Jul 2025, 05:21
Hi everyone,
I’m helping a customer set up their RevPi Connect 4 system with CODESYS, and they ran into this trouble when using module DO. Previously they are using RevPi DIO and it works fine. But now when switched to using a DO (Digital Output) module for the first time — and here's the issue:
The problem:
Channels 0 to 7 on the DO module are working just fine.
But anything from channel 8 and up (starting at channel 9) isn’t responding at all.
We double-checked the wiring, and the hardware itself seems okay.
No error messages or warnings show up — it’s just that those outputs won’t activate.
What we’ve tried:
Made sure the configuration in PiCtory is correct and saved properly.
Rebooted both the RevPi and the development PC.
I’ve attached the CODESYS project file in separate zip file, the max attachment per file is 4MB
Please Help, Thank you
I’m helping a customer set up their RevPi Connect 4 system with CODESYS, and they ran into this trouble when using module DO. Previously they are using RevPi DIO and it works fine. But now when switched to using a DO (Digital Output) module for the first time — and here's the issue:
The problem:
Channels 0 to 7 on the DO module are working just fine.
But anything from channel 8 and up (starting at channel 9) isn’t responding at all.
We double-checked the wiring, and the hardware itself seems okay.
No error messages or warnings show up — it’s just that those outputs won’t activate.
What we’ve tried:
Made sure the configuration in PiCtory is correct and saved properly.
Rebooted both the RevPi and the development PC.
I’ve attached the CODESYS project file in separate zip file, the max attachment per file is 4MB
Please Help, Thank you