Table 12.
Structure of the resource status description table.
| Field Name | Definition | Comments |
|---|---|---|
| NUMBER | number | number for resource access, starting from 1 |
| COM_ID | Terminal ID | one resource corresponding to one number, and one number contains multiple resources |
| PLC_ID | ID for accessed PLC | one source belongs to one PLC hardware device |
| SENSOR_ID | Sensor ID | one sensor ID corresponding to one address in PLC |
| WORD_COUNT | word count for resource | 1 or 2 means resource in analogue data, 0 means resource in digital switch |
| NAME | measure item | e.g., temperature, power |
| DEVICE_NAME | Device name | e.g., SIEMENS, DVP |
| DEVICE_PROTOCOL | Protocol name | MODBUS_RTU(Modbus protocol RTU mode) and MODBUS_ASC(Modbus protocol ASC mode) |
| DATA_TYPE | Data type | analog means analog data, digital means digital switch; |
| CONTROL_TYPE | Control type | number 1 means read only, 2 means writable |
| MEASURE_UNIT | Measure unit | e.g., Mpa: temperature (°C), pressure (Mpa) |
| VALUE | Measure value | means specific value |
| STATUS | status | 0 means not usable, 1 means usable |
| FACTOR | factor | means original data need to determine factor |
| OFFSET | offset | means original data need to calculate offset |