Siemens Simatic S7-1500 - Page 70

Parameter data records
B.3 Structure of data record 235 for scalable measuring range
Analog Input Module AI 8xU/R/RTD/TC HF (6ES7531-7PF00-0AB0)
70 Manual, 09/2016, A5E36647959-AB
Description of the parameters from data record 235
Table B- 16
Description of the parameters from data record 235
Parameter
Description
Scalable measuring range enabled
1 = Function is active for this channel.
Clipping 1 = Scalable measuring range cut off at the over-
flow/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 range
Example
The 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
10
H
16
V1.0
08
H
8
8 bytes
03
H
3
Scalable measuring range active and clipped (clipping)
02
H
2
Resolution: 2 decimal places
02EE
H
750
Measuring range center: 750 °C
61A8
H
25000 Overflow (Maximum):
250
.00
+ 750 = 1000.00 °C
Scalable measuring range is clipped at the overflow.
8100
H
-32512 Underflow (Minimum):
-325.12 + 750 = 424.88 °C