No energy data visible from PAC4200 devices
BMW Group — Plant Regensburg · Impatient customer · 45 min
BMW reports that since the weekend maintenance window no energy data from 18 PAC4200 meters appears in the energy management dashboard. Production reporting for the paint shop is blocked. The customer expects a status update within two hours.
Learning objective: Diagnose a Modbus TCP data acquisition failure and communicate status to the customer
Andrea Kessler (BMW) · 08:12
Good morning, we still have no energy values in the dashboard. The line managers are asking me every hour. What is your status?
You · 08:19
Good morning Ms. Kessler, thanks for the update. I can see the meters are reachable via ping but not answering on Modbus TCP. I'm checking the firewall rules changed during the maintenance window.
Andrea Kessler (BMW) · 08:24
The IT team says nothing was changed. Can you prove that it is on our side before we escalate?
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