The WRREC instruction is used to transfer the reference junction temperature via data
record 192 to data record 200 to the module.

module:
● Data record 192 for channel 0
● Data record 193 for channel 1
● Data record 194 for channel 2
● Data record 195 for channel 3
● Data record 196 for channel 4
● Data record 197 for channel 5
● Data record 198 for channel 6
● Data record 199 for channel 7
● Data record 200 for channel 8
If nine submodules (9 x 1-channel) are configured for the module, each submodule has only
one channel. The parameters of the channel are in data record 192.
Background: Each submodule you address for the data record transfer has only one
channel.The following figure shows you an example of the structure of data record 192 for channel 0.
The structure for data records 193 to 200 is identical. You can enter the selectable values at byte 1 of the data record for the corresponding
channel. The values that you can set must be within the nominal range of the thermocouple
used and within the permitted value range. See table below. The resolution corresponds to
one tenth of a degree with the "Standard" temperature unit and one hundredth of a degree
with the "Climatic" temperature unYou can find additional information on compensation of the reference junction temperature
via data record in the Analog value processing function manual In the user program, you can evaluate the status and the limits of the scalable measuring
range with data record 235, which may result by reaching underflow/overflow.The figure below shows the structure of the header informationcalable measuring range enabled 1 = Function is active for this channel.
Clipping 1 = Scalable measuring range cut off at the overflow/underflow
of the underlying measuring range.
Resolution 2 or 3 decimal places
Measuring range center Temperature in whole °C / °F / K
("working point" for the scaling)
Overflow/underflow Limits of the scalable measuring rangeThe following example shows the values for a thermal resistor Pt 100 Standard, °C:
Table B- 17 Example of a thermal resistor Pt 100 Standard
Hex. value Dec. value Evaluation of data record 235
10H 16 V1.0
08H 8 8 bytes
03H 3 Scalable measuring range active and clipped (clipping)
02H 2 Resolution: 2 decimal places
02EEH 750 Measuring range center: 750 °C
61A8H 25000 Overflow (Maximum):
250.00 + 750 = 1000.00 °C
Scalable measuring range is clipped at the overflow.
8100H -32512 Underflow (Minimum):
-325.12 + 750 = 424.88 °CThis appendix shows the analog values for all measuring ranges supported by the AI
8xU/R/RTD/TC HF analog module.
Measured value resolution
Each analog value is written left aligned to the tags. The bits marked with "x" are set to "0".
Note
This resolution does not apply to temperature values. The digitalized temperature values are
the result of a conversion in the analog moduleThe following tables list the decimal and hexadecimal values (codes) of the possible
resistance-based sensor ranges.
Table C- 6 Resistance-based sensors of 150 Ω, 300 Ω, 600 Ω, and 6000 ΩThermal resistor Pt x0 Standard (0.003851, 0.003916, 0.003902, 0.003920) and Pt x0 GOST Climatic
(0.003910)The following tables list the decimal and hexa