We recently replaced the control panel on a machine, but kept the software basically the same. The only change was moving the I/O tags to fit the new SNAP-PAC module layout. Part of this change was moving points from an old IDC-16 module to an IDC32 module.
We’re having an issue where every few hours the IDC32 module seemingly drops its communication with the R1 controller, causing all inputs that are ON to register as OFF for anywhere from 200 ms to 1 second. Every time this happens, the “times discovered” for the module in PAC Manager increments by 1.
We’ve tried the following to remedy the issue:
- Deleted old tags on the IDC32 module, and re-entered the tags
- Checked rack voltage (5.12 V)
- Updated I/O coprocessor firmware to 3.0
- Installed new IDC32 module
We’re still having the issue. All other modules on the rack appear to be working properly.
Has anyone seen this issue before, and do you have any recommendations on troubleshooting?