User manual

6 Detailed descriptions of I/O modules | Digital counter module UR20-1CNT-100-1DO
343Manual u-remote1432790000/08/12.2015
Periodic counting / no primary direction
Upper
count limit
Lower
count limit
Load value
Zero
crossing
Overrun
Underrun
Gate start Gate stop
Counting value
0
Time
Periodic counting, no primary counting direction
– Counting (up or down) starts at the load value, the entire
counting range is used.
– Upon reaching a count limit, the counter jumps to the
load value and starts counting again from there. The sta-
tus bit "Overflow performed" or "Underflow performed" is
set and a process alarm will be triggered if it is parame-
terised. All status bits remain set until they are reset with
the bit "Reset status bits" in the control word.
Periodic counting / primary direction up
Upper
count limit
Lower
count limit
Load value
Overrun
Underrun
Gate start Gate stop
Counting value
0
Time
Periodic counting, primary counting direction up.
– Up-counting starts at the load value.
– If the parametrerised end value -1 is reached during
counting in the positive direction, the counter jumps back
to the load value at the next positive count pulse and con-
tinues counting from there. The status bit "End value
reached" is set and a process alarm will be triggered if it
is parameterised.
– Upon reaching the lower count limit the counter jumps to
the upper count limit to continue counting from there.
The status bit "Underflow performed" is set and a process
alarm will be triggered if it is parameterised. All status
bits remain set until they are reset with the bit "Reset sta-
tus bits" in the control word.
Counting range
Limits Valid range of values
End value –2 147 483 647 (–2
31
+1) to [phone] (2
31
–1)
Lower count limit [phone] (-2
31
)
Periodic counting / primary direction down
Upper
count limit
Load value
End value
0
Gate start Gate stop
Counting value
Time
Periodic counting, primary counting direction down.
– Down-counting starts at the load value.
– If the parametrerised end value +1 is reached during
counting in the negative direction, the counter jumps
back to the load value at the next count pulse and contin-
ues counting from there. The status bit "Endvalue
reached" is set and a process alarm will be triggered if it
is parameterised.
– Upon reaching the upper count limit the counter jumps to
the lower count limit to continue counting from there.
The status bit "Overflow performed" is set and a process
alarm will be triggered if it is parameterised. All status
bits remain set until they are reset with the bit "Reset sta-
tus bits" in the control word.
Counting range
Limits Valid range of values
End value –2 147 483 647 (–2
31
) to [phone] (2
31
–2)
Upper count limit [phone] (2
31
–1)