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Programming
5.8 Counter and summation blocks
Parameters
Parameters
Input parameters
En
Trigger
Reset
Function parameters
Initial value (100
ms)
Output parameters
Operating time
(100 ms)
5.8.3
Frequency calculation
Function
Each time it is run through the block forms the difference of the current value at the "Counter
value" input and the value from the previous run through.
This difference divided by the time (s) between the current and last run through produces the
current "Frequency" that is output in Hz (1/s).
The output "Value valid" is set to 1 as soon as the block has been run through twice and the
difference could be calculated once.
Via the "Reset" input parameter, the output parameters are reset to 0.
232
Tag type / range of
Description
values
Enable parameter, see section Often used parameters
(Page 198).
Digital input / output /
Counter input
bit memory
After the first edge change 0 → 1 and continuous value 1
STATUS_ERROR
of "Trigger" the block begins to count the operating time.
True / False
Resets the counter to 0 or the Initial value on a positive
edge (0 → 1).
Digital input / output /
bit memory
With the setting "True" the counter is continuously reset
and the output remains permanently set to 0.
STATUS_ERROR
With the setting "Input unused" or "False", the count is
not reset. If there is overflow (4294967295) the counter
starts again at zero or at the initial value.
0 .. +4294967295
Start value
Unit: [100 ms]
Analog memory bit
Tag in which the totaled value of the operating time is
output. If there is overflow (4294967295) the counter
0 .. +4294967295
starts again at zero.
Unit: [100 ms]
Operating Instructions, 09/2017, C79000-G8976-C382-04
RTU3030C
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