Appendix: Sp-005 Registers; Thermocouple Descriptor; Thermocouple Measurement Type - Omega SP-005 User Manual

5 Appendix: SP-005 Registers

The following Appendix provides the registers and list index for the Layer N SP-005 Thermocouple and RTD Smart Probe.
This information is intended to aid users who will be making configurations and adjustments to their Layer N SP-005
Thermocouple and RTD 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 thru
a set of platform generic registers. These registers may be accessed using I2C based commands directly to the Smart Probe
devices or thru 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.
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
0 0x0060 (0xf030)
1 0x0068 (0xf034)
2 0x0070 (0xf048)
3
5.1

Thermocouple Descriptor

The Thermocouple Input Interface provides interfaces to type J, K, T, E, N, R, S, B and C thermocouples. The Sensor
Configuration and Sensor Device fields may be written to provide control of the overall function of the channel and the
thermocouple types used.
5.1.1

Thermocouple Measurement Type

The Thermocouple interface provides a measurement of temperature in
IPSO/Configuration
0x08a8 (0xf454)
0x09a8 (0xf4d4)
0x0aa8 (0xf554)
Offset Name
0x00 Measurement Type
0x01 Data Type/Format
0x02 Configuration
0x03 Sensor Device
0x04..0x08 UOMR
Sensor Type
0x20
Sensor Enumeration
Thermocouple 1
DIO (SP-005-1)
Value
0x20 Thermocouple Temperature
0x66
0x4? Determines Thermocouple type
0x?? Determines connection type
"°C"
SI Derived Units
°C Thermocouple Temperature
Thermocouple 1
Thermocouple 2 DIO (SP-005-1)
DIO (SP-005-1)
Description
Float, writeable
Units of measure
°C.
Measurement
RTD
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