The 17-pin M23 male connector is located at the bottom of WMT700. The connector is used for power supply, digital communications, and analog outputs. The signals related to digital communications are galvanically separated from the ground.
The following figure and table show the pin-out of the 17-pin M23 connector. The COM2 serial output type depends on the sensor configuration. Analog outputs are always available from the connector.
| Pin | Description | RS-232 | RS-422 | RS-485 | SDI-12 |
|---|---|---|---|---|---|
| 1 | Operating power supply | ||||
| 2 | Analog output AOUT2, wind direction | ||||
| 3 | COM2 | RS-232Rx | Rx– | Rx– | - |
| 4 | RS-232Tx | Tx– | Tx– | Data | |
| 5 | Heater power supply | ||||
| 6 | |||||
| 7 | Heater power supply ground | ||||
| 8 | |||||
| 9 | COM1 (service port) | RS-485– | |||
| 10 | COM1 and COM2 communication ports ground | ||||
| 11 | Operating power supply ground | ||||
| 12 | Analog output ground | ||||
| 13 | Analog output AOUT1, wind speed | ||||
| 14 | COM2 | - | Tx+ | Tx+ | - |
| 15 | - | Rx+ | Rx+ | - | |
| 16 |
COM1 (service port) |
RS-485+ | |||
| 17 | Reference input for AOUT2 (simulated potentiometer) | ||||
| Shield | Enclosure ground | ||||