Counters
An OPC item can represent a counter from a machine. These map directly to counters configured in Infor MES. These are the default production and scrap counters:
- Production
- Rework
- Scrap reasons
The OPC value for the counter must be in whole numbers. For example, count from 0 to a maximum value, then rollover to 0 again.
Caution:
The OPC counter must never be reset manually. If the manually reset count is used for something else, then the PLC engineers must create a duplicate OPC item to count the values without being reset.