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– Limit value
● Window (range monitoring)
Limit value 1" < Input signal < "Limit value 2
A range of the analog value (window) between "Limit value 1" and "Limit value 2" is
monitored.
– Output = 1, when input signal is within the window.
– Output = 0, when input signal is within the window.
Parameters
Parameters
Input parameters
En
Input
Function parameters
Limit value 1
Limit value 2
RTU3030C
Operating Instructions, 09/2017, C79000-G8976-C382-04
with positive hysteresis
low
You can monitor the input signal for a limit value
invert the input signal (x) using the black contact symbol (1/x).
For information on inverting, see section Programming the blocks (Page 196).
Figure 5-7
Operating diagram of an example of the window function
For this functionality you need to invert the "Output" using the black contact symbol.
Tag type / range of
values
Analog input / bit
memory
Event counter / usage
meter
3.402823 e-38 ..
3.402823 e+38
Max. 19 characters,
display of max. 4
decimal places.
3.402823 e-38 ..
3.402823 e+38
Max. 19 characters,
display of max. 4
decimal places.
5.7 Blocks for analog value functions
with positive hysteresis if you
low
Description
Enable parameter, see section Often used parameters
(Page 198).
The value of the input is monitored by the block with the
two functions described above.
Limit value 1 (absolute value)
Limit value 2 (absolute value)
Programming
221
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