Compensation; Representation Of Analog Values - Siemens TX-I/O User Manual

Definition, addition
Voltage measurement
(0...10 V)
Current measurement
(0 mA...20 mA)
Siemens
Building Technologies
Resistance measurement
Resistance measurement
SIMATIC HW catalog Description
AI_NI1K
Temperature
LG-Ni1000
AI_PT1K385 Temperature Pt 1000
Standard
AI_R2K5 Resistance 0..250Ω 2
wire
AI_T1 Temperature (PTC)
AI_NTC10K
Temperature NTC
10k
AI_NTC100K
Temperature NTC
100k
AI_PT100_4_Climatic Temperature PT100
Climatic
AI_PT100_4_Standard Temperature PT100
Standard

4.10.3 Compensation

Parameter for setting a compensation value for the conductor resistance.
The compensation value is subtracted from the result of the resistance
measurement. It is used for all signal types with two-wire resistance sensors.
Exceptions: NTC 10K and NTC 100K.
Value range Unit
0...65535 0.01 ohm

4.10.4 Representation of Analog Values

SIMATIC value Analog value
Decimal Hex
32767 7FFF 11.8515 V
31458 7AE2 11.3780 V
31457 7AE1 11.3777 V
27649 6C01 10.0004 V
27648 6C00 10.000 V
20736 5100 7.5000 V
1 1 0.0004 V
0 0 0 V
 32768
8000 < 0 V
SIMATIC value Analog value
Decimal Hex
32767 7FFF 23.703 mA
32512 7F00 23.5181 mA
32511 7EFF 23.5178 mA
27649 6C01 20.0007 mA
27648 6C00 20.0000 mA
20736 5100 15.0000 mA
1 1 0.7234 μA
TX-I/O PROFINET BIM V1.0
Parameters
Rated
measurement
range
 50... 150°C
 50... 400°C
0..2500 Ω
 50... 130°C
 40... 115°C
 40... 125°C
 50... 180°C
 50... 400°C
Description
Overflow; measurement faulty
Overshoot range; measurement is correct, measurement
accuracy is no longer assured
Rated range
Underflow; conductor interruption
Description
Overflow; measurement faulty
Overshoot range; measurement is correct, measurement
accuracy is no longer assured
Measurement range
Maximum Resolution
measurement
range
 52.5... 185°C
1/100 K
 52.5... 610°C
1/10 K
0..2650 Ω 1/10 Ω
 52.5... 155°C
1/100K
 52.5... 155°C
1/100 K
 52.5... 155°C
1/100 K
 52.5... 185 °C
1/100 K
 52.5... 610 °C
1/10 K
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CM110564en_02
23.09.2010