Sezibwa meter replacement log
Sezibwa meter replacement log
One entry per customer meter swap at Sezibwa (gateway gw-pi2). Record every system that points at a meter serial, because each one must be switched separately: the OpenEMS gateway config, the customer app (meter_sources) and the billing engine (MBE device + household link). Customers are identified here by Modbus address and serial only.
Summary
| Date | Modbus address | Old serial | New serial | Status |
|---|---|---|---|---|
| 2026-09-14 | 7 | 210302003356 | 200326020197 | Gateway and customer app done; MBE household link pending |
2026-09-14: address 7, 210302003356 to 200326020197
Why it was replaced. The old meter stopped answering on the meters bus on 2026-08-29 at 23:07 UTC (logger issue #82). It was later found physically absent. Its last register value seen on the backend was 229.35 kWh on 2026-09-04.
New meter. CHINT DDSU666 serial 200326020197, on Modbus address 7. The first backend data is from 2026-09-14; the register read 16.16 kWh on 2026-09-24.
Systems switched:
| System | Change | Date | Reference |
|---|---|---|---|
| OpenEMS gateway (gw-pi2) | New meter component meter200326020197 on unit 7 |
2026-09-14 | microgrid-gateway PR #68 |
| Customer app | meter_sources row repointed to meter200326020197/ActiveConsumptionEnergy, history start 2026-09-14; daily usage backfilled 14 to 24 Sep with the production backfill script (11 days, sums match the register) |
2026-09-24 | this page |
| Billing engine (MBE) | New device "(new meter)" added on edge sezibwa-rentals-gw-pi2 as a Consumption meter | 2026-09-24 | this page |
| Billing engine (MBE) | Household primary meter switched from the old device to the new one | pending |
Unmetered gap. No meter recorded this customer between about 2026-08-30 and 2026-09-13 (old meter off the bus, new one not yet installed). The billing engine allows one billing meter per household for a whole period, so the September bill needs a decision: use a manual reading (manualReadings in the generate call) or accept the gap.
Watch. A stray 0.35 kWh value appears on 2026-09-14 under the old channel name. That was the new meter answering on address 7 before its component was renamed, not the old meter.