Simple Count Operation - Panasonic FP7 User Manual

5.2.2 Simple Count Operation

• Simply counts count input signals.
• To enable the count input, it is necessary to turn on the count enable request signal (Y1) in
user programs.
 Linear counter
The overflow and underflow annunciation can be set for the cases when the count value
exceeds the upper limit or the lower limit.
Addition
Counter input
Subtraction
Upper limit
Count value
Lower limit
Underflow annunciation
(Input X relay)
Underflow clear
Output Y relay
 Ring counter
• If the lower limit is counted down, the count value will be rolled over, and counting down will
continue from the upper limit.
• If the upper limit is counted up, the count value will be rolled over, and counting up will
continue from the lower limit.
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