iDect FC6A series User Manual page 204

5: F S
UNCTIONS AND ETTINGS
Example: Group 1, number of comparisons is 3, set to device address D0
When the current value matches preset value 1, Current Comparison Number becomes 2 and 3 is stored in Next Comparison
Number.
When the device address is configured as D0, Current Comparison Number is stored in D1 and Next Comparison Number is
stored in D2.
For the group 1 preset value, the value of the data registers (D4, D5) allocated to preset value number 1 is stored in D8212 and
D8213 as shown in the table above and it is compared to the current value.
Counting State
Current
Comparison
Number (D1)
Next
Comparison
Number (D2)
Before the count action, set the
Next Comparison Number and
preset value 1 to 3 to the count
values with the initialize pulse.
Note: When the Next Comparison Number preset value becomes active, the high-speed counter preset value during execution does not change,
even when the preset value for that preset value number is changed. When the current value and the current preset value match, the preset value
with the number stored in Next Comparison Number becomes active. Changes to the Next Comparison Number data register must be
performed before the preset value becomes active.
5-18
Count Count
Before action Action start
→
0 1
→
1 2
Preset value 1 is set to
Current Comparison
Number
FC6A S M S
ERIES ICRO MART
Current value
and preset
value 1
matched
→
2
→
3
Preset value 2
is set.
A - -O T U ' M
LL IN NE YPE SER S ANUAL
Current value
and preset
value 2
matched
→ →
3
→ →
1
Preset value 3
is set.
FC9Y-B1722
Current value
and preset
value 3
matched
1
Repeat
2
Once again, preset
value 1 is set.