Schneider Electric UMAS
Table of contents
Structure
| Modbus/TCP | UMAS | ||||
|---|---|---|---|---|---|
| Modbus Header | Func Code (\x5A) | Session Key | UMAS Func | Data | |
| 1 Byte | 1 Byte | 1 Byte | 1 Byte | ||
UMAS Function Code
request information about a device
| Code | Function | Description |
|---|---|---|
| 0x02 | pu_GetPlcInfo | requests information about the device |
| 0x04 | pu_GetPlcStatus | queries the PLC status |
| 0x06 | pu_GetMemoryCardInfo | requests information about the device’s SD card |
Reference
modbus-umas-schneider.lua
modicon-info.nse
Kaspersky ICS-Cert- The secrets of Schneider Electric’s UMAS protocol