Active Systems: 2831
Active Wireless Remotes: 4042
Total Active IOT Devices: 6873
 

ITU_G2 Data Points

Introduction

The ITU_G2 can measure a number of different inputs and parameters associated with these inputs. To report all these parameters when they are mostly unused would be a waste of space in the log record. Therefore the ITU_G2 includes a log map to specify which parameters are to be logged. The use of a log map also allows the flexibility to select data points to be logged from external sensors.

To make it easier to remember which parameter is which the ITU_G2 groups the parameters into a set of logical devices. Logical devices are identified by a letter and then the data values associated with this logical device are identified by a number. Some logical devices are internal to the ITU_G2 and are therefore always present whereas others are external devices that may or may not be connected. For example the analog inputs are an internal logical device since they are part of the ITU_G2 but the temperature sensor needs to be connected so is an external logical device.

In addition to the logical devices of the ITU_G2, external physical devices may also be included in the log map. These devices are identified by numbers and include SDI-12 sensors and wireless remotes.

Internal Data Points

Logical
device
Data
Point(s)
DescriptionUnitsMin. Code Version
A 1-8Analog inputs 1-8 (Filtered)V[1]0.01.00
1/1-8/1Analog inputs 1-8 (Unfiltered)V[1]0.06.18
912V battery voltage (Filtered)V0.01.00
9/112V battery voltage (Unfiltered)V0.06.18
B 1Battery fuel gauge accumulated currentAh0.01.14
2Battery fuel gauge average currentA0.01.14
3Battery fuel gauge temperature°C0.01.14
C 1-8Digital inputs 1-8 counts0.01.00
1/1-8/1Digital inputs 1-8 differential counts0.06.11
1/2-8/2Digital inputs 1-8 reference counts0.06.11
9Wind speed input count0.06.11
9/1Wind speed input differential count0.06.11
9/2Wind speed input reference count0.06.11
D 1Digital inputs current state (bits 0-7 = inputs 1-8)0.01.00
2Relay and virtual relay states (bits 0-7 = relays 1-8)0.01.14
F 1-8Digital input frequenciesHz0.03.04
G 1GPS Latitude°0.04.05
2GPS Longitude°0.04.05
3GPS Altitudem0.04.05
4GPS Dilution of precision0.04.05
5GPS GotLocation (b1) and GotTime (b0) flags0.06.01
H 1-2Humidity reading from temperature/humidity sensor%RH0.01.00
J 1, 1/1HTP sensor 1 humidity%RH0.01.00
4, 1/2HTP sensor 2 humidity%RH0.05.11
2, 2/1HTP sensor 1 temperature°C0.01.00
5, 2/2HTP sensor 2 temperature°C0.05.11
3, 3/1HTP sensor 1 pressurePa0.01.00
6, 3/2HTP sensor 2 pressurePa0.05.11
S 1Cellular signal strength (0-31 scale)0.01.15
2Cellular signal strengthdBm0.01.15
T 1-8Temperature sensors°C0.01.00
9-16Temperature sensors°C0.05.11
W 1Wind direction average since last log°0.01.00
2Wind speed average since last logHz0.01.00
3Wind speed peak gust since last logHz0.01.00
4Wind count (wind run) since last log0.01.00
5Wind direction at last sample time°0.05.00
X Reserved for backend use (external devices)
Y 1-8User analog expression results0.06.05
1/1-8/1User analog expression differential values0.06.14
1/2-8/2User analog expression reference values0.06.14
Z 1Time in SPE, semi-bitfield, format0.01.00
2Time in Unix time formats0.01.14
3Real time clock temperature reading°C0.01.14
4Time read from DS3234 in Unix time formats0.05.11
5Bitfield: day-of-week (3), hour (5), minute (6), second (6)0.06.01
6Second of days0.06.01
7Second of weeks0.06.01
8Day of yeardays0.06.01
9Day of centurydays0.06.01

1. When an analog input is configured as a voltage input then the units of the reported value are in volts. However, if an input is configured as 4-20mA then the reported value is a unitless fraction of the sensor full scale range. That is, a current of 4mA is reported as 0 and and current of 20mA is reported as 1. To obtain the reading of the senor in its measurement units one should multiply the reported value by the sensor's full scale range. Error values or less than 4mA will be reported as negative values.

DMR Data Points

The DMR generates additional data points for wireless units that it receives. These are available as data set one for each device received.

Data
Point(s)
DescriptionUnits
1/1Receive signal strength[2]dBm
2/1 LRR flags
SRR raw packet binary content
3/1LRR settings CRC (when reported)
4/1First repeater unit ID

2. For units that are received via a repeater this receive signal strength value will be the signal strength that was measured at the first repeater. The unit ID of this repeater can obtained from data point 4/1. For units received directly by the DMR this will be the signal strength measured at the DMR and there will be no value at data point 4/1 (i.e. a NaN).