| Protocol | Modbus RTU |
| Bus type | RS-485, configurable at 9600 bps or 4800 bps |
| Addresses | 1 to 247 |
| Formats | Configurable 8n1, 8e1, 8o1, 8n2 |
| Function codes | 4 - log reading |
| Logs | 0 - indication value (16 bits) 1 - number of decimals (16 bits) |
| Mistakes | 0 - function not supported 1 - registration not accessible |
| Isolation | 1000V DC |
| Allowed location | Opt1 |
