---
title: "SCADA Communication"
canonical: "https://farmconnect.docs.rubiconwater.com/space/WS/1932067079/SCADA%20Communication"
format: markdown
---
> Macro (toc)

# General Information

The communication between SCADA and a weather station device is represented in the diagram below:

![image](media://c7381896-6b96-4bee-9d31-e3d50b4a2de5)

*Overview Communication with SCADA*

As detailed in the figure above, the weather station is an end device that is connected directly to the RTU which in turn sends all data to a SCADA system through the gateway.

Communication from SCADA with the Weather Station is one way only. The RTU polls the Weather Station for data and bursts the data to the RTU at intervals of 15 minutes to a few hours depending on the data type. Polling functionality has not been implemented in the device so real time data is not available.

When the Weather Station is attached to an RTU, the SCADA user can configure the burst rate of the Weather Station, this value defaults to 15 minutes. In this configuration, the SCADA user can also force the Weather Station data tables on the RTU to burst. This is done by pressing the **Force burst** button on the SCADA page. There is no ability for this to be scheduled.

The Weather Station can be implemented in SCADA as either a standalone device or as an add-on for an existing site. Host engineering of tag tables and tags is completed as appropriate depending on the implementation.

# SCADA Tags

The data retrieved from the Weather Station is stored locally in the RTU in tables 100, 101 and 102, therefore, when configuring host engineering for a weather station, these tables must be used.

All tags are read only. No setpoints can be sent from SCADA to the weather station device.

---

## Table 100

Tags configured in table 100 are shown below:

|  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- |
| **TAG_NAME** | **TAG_DESC** | **ROW_NO** | **COL_NO** | **TABLE_NO** | **TAG_DISPLAY** | **TAG_UNITS** |
| **AIR_TEMP_AVG** | Air Temperature Avg | 0 | 0 | 100 | Y | °C |
| **WIND_SPEED_AVG** | Wind Speed Avg | 0 | 1 | 100 | Y | km/h |
| **WIND_DIR_AVG** | Wind Direction Avg | 0 | 2 | 100 | Y | deg |
| **AIR_PRES_AVG** | Air Pressure Avg | 0 | 3 | 100 | Y | hPa |
| **RELATIVE_HUM_AVG** | Relative Humidity Avg | 0 | 4 | 100 | Y | % |
| **GL_RAD_AVG** | Global Radiation Avg | 0 | 5 | 100 | Y | W/m2 |
| **AIR_TEMP_MIN** | Air Temperature Min | 1 | 0 | 100 | Y | °C |
| **WIND_SPEED_MIN** | Wind Speed Min | 1 | 1 | 100 | Y | km/h |
| **WIND_DIR_MIN** | Wind Direction Min | 1 | 2 | 100 | Y | deg |
| **AIR_PRES_MIN** | Air Pressure Min | 1 | 3 | 100 | Y | hPa |
| **RELATIVE_HUM_MIN** | Relative Humidity Min | 1 | 4 | 100 | Y | % |
| **GL_RAD_MIN** | Global Radiation Min | 1 | 5 | 100 | Y | W/m2 |
| **AIR_TEMP_MAX** | Air Temperature Max | 2 | 0 | 100 | Y | °C |
| **WIND_SPEED_MAX** | Wind Speed Max | 2 | 1 | 100 | Y | km/h |
| **WIND_DIR_MAX** | Wind Direction Max | 2 | 2 | 100 | Y | deg |
| **AIR_PRES_MAX** | Air Pressure Max | 2 | 3 | 100 | Y | hPa |
| **RELATIVE_HUM_MAX** | Relative Humidity Max | 2 | 4 | 100 | Y | % |
| **GL_RAD_MAX** | Global Radiation Max | 2 | 5 | 100 | Y | W/m2 |
| **MAX_ACCELERATION** | Max Acceleration | 3 | 0 | 100 | Y | mG |
| **ACU_RAIN_15_MIN** | Accu. Rainfall 15 Min | 3 | 1 | 100 | Y | mm |
| **ACU_RAIN_HOURLY** | Accu. Rainfall Hourly | 3 | 2 | 100 | Y | mm |
| **RAIN_CURR_INT** | Rainfall Current Intensity | 3 | 3 | 100 | Y | mm/h |
| **RAIN_PEAK_INT** | Rainfall Peak Intensity | 3 | 4 | 100 | N | mm/h |
| **DUR_OF_RAIN_EVENT** | Duration of Rain Event | 3 | 5 | 100 | Y | s |
| **AIR_TEMP_AVG_24H** | Air Temperature Avg 24 hour | 4 | 0 | 100 | Y | °C |
| **ACU_RAIN_SINCE_9AM** | Accu. Rainfall Since 9am | 4 | 1 | 100 | Y | mm |
| **WIND_SPEED_AVG_24H** | Wind Speed Avg 24 hour | 4 | 2 | 100 | Y | km/h |
| **RELATIVE_HUM_MIN_24H** | Relative Humidity Min 24 hour | 4 | 3 | 100 | Y | % |
| **BATT_VOLT** | Battery Voltage | 4 | 4 | 100 | Y | V |
| **RAIN_INT_SLOT_TIME** | Rain Intensity Slot Time | 4 | 5 | 100 | Y | s |
| **AIR_TEMP_MIN_24H** | Air Temperature Min 24 hour | 5 | 0 | 100 | Y | °C |
| **ACU_RAIN_DAILY** | Accu. Rainfall Daily | 5 | 1 | 100 | Y | mm |
| **WIND_SPEED_MIN_24H** | Wind Speed Min 24 hour | 5 | 2 | 100 | Y | km/h |
| **RELATIVE_HUM_MAX_24H** | Relative Humidity Max 24 hour | 5 | 3 | 100 | Y | % |
| **TIME_ALIVE** | Time Alive | 5 | 4 | 100 | Y | min |
| **RAIN_DAILY_UPDATE_HR** | Rainfall Daily Update hour | 5 | 5 | 100 | Y | h |
| **AIR_TEMP_MAX_24H** | Air Temperature Max 24 hour | 6 | 0 | 100 | Y | °C |
| **WIND_DIR_MAX_24H** | Wind Direction Max 24 hour | 6 | 1 | 100 | Y | deg |
| **WIND_SPEED_MAX_24H** | Wind Speed Max 24 hour | 6 | 2 | 100 | Y | km/h |
| **GL_RAD_TOTAL_24H** | Global Radiation Total 24 hour | 6 | 3 | 100 | Y | MJ/m2 |
| **DRAIN_CURR** | Drain Current | 6 | 4 | 100 | Y | mA |
| **ACC_MAG_INTERVAL** | Accelero. / Magneto. Interval | 6 | 5 | 100 | N | s |
| **DEW_POINT** | Dew Point Temperature | 7 | 0 | 100 | Y | °C |
| **WS_TILT** | Product Installation Tilt | 7 | 1 | 100 | Y | deg |