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7 Appendix: SP-003/SP-004 Registers
The following Appendix provides the registers and list index for the Omega Link SP-003/SP-004 Environmental
Monitoring Smart Probe. This information is intended to aid users who will be making configurations and adjustments
to their Omega Link SP-003/SP-004 Environmental Monitoring Smart Probe through the Command Line Interface or
other custom interfaces.
Smart Probe devices share a common platform architecture that provides extensive monitoring and control
capabilities through a set of platform generic registers. These registers may be accessed using I2C based commands
directly to the Smart Probe devices or through a set of Modbus based registers when using Omega Interface devices.
Refer to the
Smart Sensor Device Interface manual for further information.
When powered on or after a device reset each Smart Sensor based device will enumerate 1 or more sensor instances
which are described by the device specific Sensor Descriptors which include configuration options, measurement type
and units of measure for the corresponding sensor values. Additional sensor information is provided in sensor specific
IPSO object descriptions which include extended measurement type, precision and tracking of minimum/maximum
readings. Sensors are always enumerated in the order Apparent Heat (EH), Dewpoint (D), Temperature (T), Relative
Humidity (RH), Barometric Pressure (P) and DIO. Each enumerated Sensor has a Descriptor Base address location and
a Sensor IPSO / Configuration structure address location based on the sensor mix selected.
Sensor Descriptor Base IPSO/Configuration Enumerated Sensor Mix
0 0x0060 (0xf030) 0x08a8 (0xf454) T T T D EH
1 0x0068 (0xf034) 0x09a8 (0xf4d4) DIO RH RH T D
2 0x0070 (0xf038) 0x0aa8 (0xf554) DIO B RH T
3 0x0078 (0xf03c) 0x0ba8 (0xf5d4) DIO B RH
7.1 Sensor Values
Sensors use float values which represent the measured value in the indicated units of measure.
Sensor Name
Modbus
Address
I2C
Address
Size Description
0 Sensor 0 Data 0xf01e 0x003c float Sensor Reading
1 Sensor 1 Data 0xf020 0x0040 float Sensor Reading
2 Sensor 2 Data 0xf022 0x0044 float Sensor Reading
3 Sensor 3 Data 0xf024 0x0048 float Sensor Reading
7.2 Sensor Names
Each sensor has a name. The default names for the outputs are created based on the value being measured . The
default names may be overwritten, such as ‘ Room_Temp ’ or ‘ Oven_Temp ’. Names are restricted to 16 characters.
Output Name
Modbus
Address
I2C
Address
Size Description
0 Sensor 0 Name 0xf700 0x0e00 char[16] Defaults depends on Sensor
1 Sensor 1 Name 0xf708 0x0e10 char[16] Defaults depends on Sensor
2 Sensor 2 Name 0xf710 0x0e20 char[16] Defaults depends on Sensor
3 Sensor 3 Name 0xf718 0x0e30 char[16] Defaults depends on Sensor
The Sensor names are retained until a factory reset occurs. It is strongly recommended that:
1) Spaces within the name should be replaced with the ‘_’ character.