I185 GB 06 15
LRX D01
51
COUNTER MODE 3 (FIXED COUNT, RETENTIVE)
Mode 3 Counter operation is similar to Mode 1 except its current count value is retentive when Counter powers down. So, the current value will
not be init value when Counter powers up, but be the value when it is powering down. Mode 3 Counter will count up to a fixed preset value and
stop counting at that value, or stop counting when its current value is 0 if it is configured as down counter. Additionally, the current count value
is retentive when the LRD switches between RUN and STOP if “C Keep” is active. In the example below, the counter will stop counting when it
reaches the preset value of 20. Counter status bit C01 will be ON when the current value is 20.
This mode is similar to mode 1, but:
– The current counter value will keep at loss of power when the LRD status is RUN
– The current counter value will keep when the LRD switches between RUN and STOP if C-keep is active.
2
1
4
5
3
6
COUNTER MODE 4 (CONTINUOUS COUNT, RETENTIVE)
Mode 4 Counter operation is similar to Mode 2 except its current count value is retentive. The current count value is retentive and will keep its
current count after a loss of power to the LRD. Mode 4 Counter will count up to a fixed preset value and then continue counting after the preset
value, but it will not count when the current value equals 0 if it is configured as down counter. Additionally, the current count value is retentive
when the LRD switches between RUN and STOP if “C Keep” is active. In the example below, the counter will continue counting after its preset
value of 20. Counter status bit C01 will be ON when the current value is not less than 20.
This mode is similar to mode 2, but:
– The current counter value will be kept at loss of power when the LRD status is RUN.
– The current counter value will be kept when the LRD switches between RUN and STOP if “C-keep” is active.
2
1
4
5
3
6