Table of Contents
Advertisement
Programming
5.7 Blocks for analog value functions
5.7.5
Analog value monitoring
Function
The analog value of the input is monitored for positive and negative change when the
"Trigger" input is activated.
The values for a positive change (Δ+) and a negative change (Δ-) can be programmed.
When the "Trigger" input is set, the current value of the input (A
processing started. As soon as the value of the analog input has reached the value of the
negative change (A
1.
As soon as the value of the analog input is once again between the values A
A
Trg
Parameters
Parameters
Input parameters
En
Trigger
Input
Function parameters
Positive change
Negative change
Output parameters
Output
226
+ Δ-) or the value of the positive change (A
Trg
+ Δ+ the output is set to 0 again.
Tag type / range of
values
True / False
Digital input / output /
bit memory
STATUS_ERROR
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
Digital output / bit
memory
Trg
Description
Enable parameter, see section Often used parameters
(Page 198).
With an edge change 0 → 1 block processing is started (if
En = 1) and the current value of the analog input (A
saved.
With the setting "True" the trigger is always active.
With the setting "False" the block is never processed.
The value (A
) of the input at the time of the edge
Trg
change of "Trigger" is monitored by the block function for
positive and negative change.
Absolute value of the positive change (Δ+)
Absolute value of the negative change (Δ-)
Tag in which the value calculated by the block is output:
1 = "Positive change" overshot or "Negative change "
•
undershot
0 = "Positive change" not overshot and "Negative
•
change " not undershot
Operating Instructions, 09/2017, C79000-G8976-C382-04
) is saved and the block
+ Δ+) the output is set to
Trg
+ Δ- and
Trg
Trg
RTU3030C
) is
Advertisement
Table of Contents
