Mitsubishi Electric NZ2FTGN User Manual page 529

■Once - forward
This function performs counting between Load value and End value - 1. The counting stops when the value exceeds End
value - 1.
It is used to perform up counting only.
To use this function in combination with the preset function, set the preset value between Load value and End value - 1.
Ex.
When Once - forward is set (when "Counter behaviour internal gate" is set to "Interrupt counting")
Set SW gate
(b2 in "Control word" of Process data output)
Reset SW gate
(b10 in "Control word" of Process data output)
SW gate active
(b2 in "Counter status" of Process data input)
Internal gate active
(b5 in "Counter status" of Process data input)
End value reached
(b10 in "Counter status" of Process data input)
(1) When the Set SW gate is turned on, the counting starts.
When the counting starts, SW gate active and Internal gate active turn on.
(2) If Counter value exceeds "End value - 1" during up counting, Load value is stored in Counter value.
At this time, the counting stops automatically, Internal gate active turns off, and End value reached turns on.
(3) When Reset SW gate is turned on, SW gate active turns off.
(4) When Set SW gate is turned on, the counting restarts.
After restarting the counting, SW gate active and Internal gate active turn on.
(5) When Reset SW gate is turned on, the counting stops.
When the counting stops, SW gate active and Internal gate active turn off.
Counter value
Upper limit value
(+2147483647)
End Value - 1
0
(1)
Load Value
Lower limit value
(-2147483648)
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
(4)
(2)
(3)
19 HIGH-SPEED COUNTER MODULE
19.1 NZ2FTS-D62P2
19
(5)
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