Inverter string data is accessible through logger’s internal register mapping.
Example – Read DC power (SMA Tripower):
In Modbus Poll:
Select COM5, RTU, 9600 (ignored), 8N1 → Address 1 → Function 4 (Input Registers) → Start 30775 → Quantity 1. vcom meteocontrol
Older SCADA systems use OPC (OLE for Process Control). VCOM Meteocontrol can be configured as a Modbus-to-OPC gateway. The VCOM logger acts as a slave, and a master SCADA reads values via the virtual serial link. In Modbus Poll : Select COM5, RTU, 9600
One of the most powerful features of the VCOM ecosystem is its ability to integrate I-V Curve Tracing. In Modbus Poll : Select COM5
If your inverters support it (or if you are using Meteocontrol’s compatible hardware), you can remotely trigger an I-V curve test on a string. This allows you to diagnose:
At the foundation is the VCOM OSS (Outdoor Substation). This isn't just a datalogger; it is an industrial computer designed for the harsh realities of a solar farm.