Toshiba LF620 Instruction Manual page 124

Preset count output performance
(1) The following is an example for totalizer flow counts output in which the totalizer is reset with an
external signal (when preset output status level hold mode is set (contact ON)).
Counter Reset/Start signal
(DI detective level is H).
Totalizer flow counts
0
Counter reset
Preset point output
* When the Reset/Start signal is in H level (DI counter control signal level: H), the totalizer is reset to
zero and stops counting. When the Reset/Start signal goes to L level, the totalizer starts counting.
The preset point output goes ON when the totalizer counts reaches the preset point, and the output
goes OFF when the totalizer is reset to zero.
Counter start
Input/Output signal time chart
− 123 −
6 F 8 A 0 9 2 7
H level input
L level input
Preset point
Counter reset
ON
OFF