| Device Type | Variants | Modbus TCP (Ethernet) | Curtailment | Reactive power control |
|---|---|---|---|---|
| Data Manager M | EDMM-10 | ✅ | ✅ | — |
| EDMM-20 |
For correct ethernet wiring: Follow the the guidelines for ethernet wiring.
The SMA Data Manager M only follows the power limits of the EMS when two things are set up on it: the Modbus server, and active power control by Modbus in the grid management services. With only the Modbus server active, the EMS can read the data but the Data Manager ignores its limits.
If active power control by Modbus is not enabled, the "Control" column of the Data Manager on the devices page of the EMS turns red with the message "Grid management services are not enabled in the SMA Data Manager, so it ignores our setpoints."