X20 system modules • Analog input modules • X20AI2438
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X20 system User's Manual 3.10
4.3.7.9.7.5 ReplacementUpper, ReplacementLower
Names (pChannelName):
ReplacementUpper_1
ReplacementUpper_2
ReplacementLower_1
ReplacementLower_2
The "Replace" registers are used to predefine the static values that will be displayed instead of the current mea-
surement value when a limit value is violated.
Data type
Values
INT
-32767...32767
UINT
0...65535
If the replacement strategy "Use replacement values when an error occurs" is activated, the replacement value must
be set for the respective analog input taking the configured normalization into account as well. When an overflow
or underflow error status occurs, the "AnalogInputEvaluated0x" channel is replaced with the corresponding value.
Using a default value of 21000 µA and 3600 µA, the following values and formulas apply to this parameter:
Overflow:
•
Displaying 0..25 mA as 0..25000 : 21000
•
Displaying 0..25 mA as 0..32767 : 27524, limit value = ([µA]*32767)/25000
•
Displaying 4..20 mA as 0..32767 : 32767, limit value = (([µA]*1.31068) - 5242.72)*1.5625
•
Displaying 0..25 mA as 0..65535 : 55049, limit value = ([µA]*65535)/25000
Underflow:
•
Displaying 0..25 mA as 0..25000 : 3600
•
Displaying 0..25 mA as 0..32767 : 4718, limit value = ([µA]*32767)/25000
•
Displaying 4..20 mA as 0..32767 : -819, limit value = (([µA]*1.31068) - 5242.72)*1.5625
•
Displaying 0..25 mA as 0..65535 : 9437, limit value = ([µA]*65535)/25000
Summary of Contents for X20 System
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