Decision Tree: Communication / DCS
Goal:
Restore stable updates to DCS / PLC
(values, quality, and timing).
1) Confirm analyzer is running
and timestamps update.
2) Check network configuration:
IP, subnet, and gateway.
3) Confirm protocol settings
match the DCS configuration.
4) Verify mapping, scaling,
data types, and quality/status bits.
5) Align polling interval
with the GC cycle time.