Groundwork Zenith Meteorological Stations

Purpose

The purpose of this plugin is to collect data from Groundwork Zenith meteorological stations.

Usage

This plugin reads the data from Groundwork Zenith meteorological stations, via Modbus serial or TCP. This following models are supported:

Groundwork Zenith

The below data and the included configuration file groundwork_zenith_met_station_EXAMPLE should be used as an example. Some of the fields may not be implemented (meaning they will send a value of -999) or they may not send any data. These should be commented out in the plant specific config file and re-uploaded. Data will be collected to the weather table. By default, it will collect data every 5 minutes, but can collect at a minimum rate of 1 second, depending on the speed of the serial connection. The plugin will make 1 attempt (by default) to read the data. The following data will be collected from the geonica_meteodata_3000c.txt configuration file::

Variable Name           					    Units
=========================================================================
Scan Count	            					    s	    	
Skipped Scans         													 	
Logger Voltage    						    V	 	
Logger Temperature	      					    °C 	
Skipped Slow Scans   							 	   	
Logger Lithium Battery Voltage					    V 	
Number of Low Voltage Detections																								
Solar Zenith							    °	 	
Solar Elevation							    ° 	
Solar Azimuth							    °	 	
Heaters State														
Logger Data Map Version																											
Battery Voltage							    V 	
Battery Current							    A 	
Load Current							    A 	
Input Voltage							    V 	
Input Current							    A 	
Charge Source														 	   	
Battery Status														 	   														
POA Irradiance 1						    W/m^2 
Temp Corrected POA Irradiance 1					    W/m^2 
POA Pyro Case Temperature 1					    °C 	
GHI Irradiance 1						    W/m^2 
Temp Corrected GHI Irradiance 1					    W/m^2 
GHI Pyro Case Temperature 1					    °C 	
POA Irradiance 2						    W/m^2 
Temp Corrected POA Irradiance 2					    W/m^2 
POA Pyro Case Temperature 2					    °C  	
GHI Irradiance 2						    W/m^2 
Temp Corrected GHI Irradiance 2					    W/m^2 
GHI Pyro Case Temperature 2					    °C 														
Incline Radiation 1						    W/m^2 
Temp Corrected Incline Radiation 1				    W/m^2 
Incline Pyro Temperature 1					    °C  	
Solar Radiation 1						    W/m^2 
Temp Corrected Solar Radiation 1				    W/m^2 
Horizontal Pyro Case Temperature 1				    °C 	
Incline Radiation 2						    W/m^2 
Temp Corrected Incline Radiation 2				    W/m^2 
Incline Pyro Case Temperature 2					    °C 	
Solar Radiation 2						    W/m^2 
Temp Corrected Solar Radiation 2				    W/m^2 
Horizontal Pyro Case Temperature 2				    °C 															
Ambient Temperature						    °C 	
Dew Point Temperature						    °C 	
Relative Humidity						    % 	
Wind Speed							    m/s 	
Wind Speed Max							    m/s 	
Wind Direction							    ° 	
Wind Measurement Quality					    % 	
Barometric Pressure						    mbar 	
Barometric Pressure Sea Level					    mbar 	
Internal Compass Reading					    ° 														
Precipitation							    mm 	
Precipitation Intensity						    mm/h 	
Daily Precipitation						    mm	
DIR Irradiance							    W/m^2	
DIFF Irradiance							    W/m^2	
GHI Irradiance							    W/m^2														
Module Temperature 1						    °C	
Module Temperature 2						    °C	
Module Temperature 3						    °C	
Module Temperature 4						    °C	
Module Temperature 5						    °C														
POA Irradiance 1 Insolation					    Wh/m^2
GHI Irradiance 1 Insolation					    Wh/m^2
POA Irradiance 2 Insolation					    Wh/m^2
GHI Irradiance 2 Insolation					    Wh/m^2													
Reference Cell Irradiance 1					    W/m^2	
Reference Cell Temperature 1					    °C	
Reference Cell Irradiance 2					    W/m^2	
Reference Cell Temperature 2					    °C														
Albedometer GHI Irradiance					    W/m^2	
Albedometer Temp Corrected GHI Irradiance			    W/m^2	
Albedometer GHI Pyro Case Temperature				    °C	
Albedometer Reflected Horizontal Irradiance			    W/m^2	
Albedometer Temp Corrected Reflected Horizontal Irradiance	    W/m^2	
Albedometer Reflected Horizontal Pyro Case Temperature		    W/m^2	
Albedo																		
Albedo Temp Corrected																											
POA Pyro 1 Serial Number											 		
GHI Pyro 1 Serial Number											 		
POA Pyro 2 Serial Number											 		
GHI Pyro 2 Serial Number											 		
Albedometer GHI Pyro Serial Number									 		
Albedometer Reflected Horizontal Pyro Serial Number				 																	
Alarm Flags Summary												 		
Alarm Flags Logger													 		
Alarm Flags Battery												 		
Alarm Flags Charge													 																
Alarm Flags GHI Irradiance 1										 		
Alarm Flags POA Irradiance 1										 		
Alarm Flags GHI Irradiance 2										 		
Alarm Flags POA Irradiance 2										 																
Alarm Flags Met													 		
Alarm Flags Wind													 		
Alarm Flags Rain													 		
Alarm Flags GHI Irradiance											 															
Alarm Flags Module Temperature 1									 		
Alarm Flags Module Temperature 2									 		
Alarm Flags Module Temperature 3									 		
Alarm Flags Module Temperature 4									 		
Alarm Flags Module Temperature 5									 															
Reference Cell Irradiance 3					    W/m^2													
Snow Depth					            	    cm	
Tilt Angle of SHM31 Snow Depth Sensor				    °		
Operating Status Errors								 

Arguments

Arguments are as follows:

• endpoint. This is either a serial device like /dev/ttyS0 or an IP or DNS like 192.168.1.15

• bus_addresses. A Modbus address in the range 2-255. This can be a hyphenated list like 3-10 or a list like 2,5,7,9

• --port. This is an optional parameter used in an Ethernet gateway, and is the TCP port used for the gateway. Default is 502

• --attempts. This is an optional parameter, and determines how many times to times to attempt to read an inverter value. Default is 1

• --delay. This is the delay in seconds between inverter send and receive commands, AND if attempts > 1. Fractions like 0.3 can be used. Default is 0.05

• --stop_on_any_command_fail. If this is specified, then any Modbus commands that fail will stop all further queries for all bus addresses and attempts.

• --serial_lock. If this is set, the program can only be run one at a time (so as not to overload a Modbus device). If the device being queried is a serial device, this will automatically be set to "on". For IP addresses it is optional.

• --sampling_rate. If this is defined, and the sampling rate is greater than 1, then all DECIMAL and SWAP16 values will be collected as an average. In other words; it will take a sample at the nominated frequency. After X samples defined by sampling_rate, a record will be written and sent to the cloud.