User manual

6 Detailed descriptions of I/O modules | Digital counter module UR20-1CNT-500
370 1432790000/08/12.2015Manual u-remote
1-time counting / no primary direction
Upper
count limit
Lower
count limit
Load value
Gate start Gate startAutomatic
gate stop
Automatic
gate stop
Counting value
0
Overrun
Underrun
Time
1-time counting, interrupted counting
Upper
count limit
Lower
count limit
Load value
Gate start Gate startAutomatic
gate stop
Automatic
gate stop
Counting value
0
Overrun
Underrun
Time
1-time counting, cancelled counting
– Counting (up and down) starts at the load value, the
entire counting range ist used.
– Upon exceeding the upper or lower count limit, the coun-
ter jumps to the other count limit respectively. The inter-
nal gate is automatically closed, the status bit “Overflow
performed” or “Underflow performed” is set and apro-
cess alarm will be triggered if it is parameterised.
– To restart counting, the internal gate must be reopened.
Depending on the parameters set, counting continues
from the current counting value (“Interrupt counting”) or
it starts again from the load value (“Cancel counting”).
1-time counting / primary direction up
Lower
count limit
Load value
Gate start Gate startAutomatic
gate stop
Automatic
gate stop
Counting value
0
Overrun
End value
Underrun
Time
1-time counting, primary 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. The
internal gate is automatically closed, the status bit "End
value reached" is set, and a process alarm will be trig-
gered if it is parameterised.
– To restart counting, the internal gate must be reopened.
Counting starts again at the load value.
– 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
)