DevicesEnergy meter
Pilot Energy Meters
Supported Devices
| Device Type | Modbus TCP (Ethernet) | RS485 |
|---|---|---|
| Pilot SPM33 | ✅ | ✅ |
Wiring
RS485
The RS485 terminals are located on the back of the device.
RS485 Wiring
- For correct RS485 wiring: Follow the guidelines for RS485 wiring.
- If the wiring shown in the table below is incorrect, please let us know.
- There is no general consensus in the industry about the usage of A and B for the RS485 polarity, so it may be counterintuitive and opposite of what you might expect for some devices.
| Device | SmartgridOne Controller model OM1 | SmartgridOne Controller model IG8 | RS485-USB converter | RS485-Ethernet converter |
|---|---|---|---|---|
| 13 (A+) | RS485 A | RS485_POS | RS485 A | TX+ |
| 12 (B-) | RS485 B | RS485_NEG | RS485 B | TX- |
| 14 (Shield) | RS GND | GND | Not available | G |
Note
Power Supply Ensure the device is powered using terminals 1 (L/+) and 3 (N/-). The auxiliary power supply range is AC 85-265V or DC 100-300V.
Configuration
NOTE: RS485 Device Addresses
- You MUST give each device on the RS485 bus a unique address. Check the manual of the device on how to do this.
- Use lower addresses first (1, 2, ...) because the SmartgridOne Controller will find them faster!
- For each device, it is generally recommended to stick with the factory default baud rate, parity, and stop bits. The SmartgridOne Controller will scan on those first.
Use the following Modbus settings in the Controller's device wizard. These are the default settings for the meter:
- Baudrate: 9600
- Modbus Address: 1 (or the address set on the meter)
- Parity: None
- Stop bits: 1
- Data bits: 8