sm74 counter

dose any body know how printed papers get counted in sm74?

 

Should be a roller switch under the register table.

 

junker 1984 do you mean the press cycle switch ? cause i unplugged it from STA but the press continued it`s counting

 

Hmmmmm...., you got me! Could have sworn the pulse originated at the roller switch through the STA. Maybe an inductive sensor in the delivery, amidst the fan banks? Anyone? Anyone? (A little humor there, Ferris Bueller's Day Off) .

 

STA has nothing to do with sheet counter on CPtronic machines. Sheet counter is done via software

 

Was there not a roller switch, even into mid 90s, that sent the pulse, exheid?

 

There was a roller switch on very early version SM74s on the OS that ran on the cam right behind the encoder. Very few machines had it and if I remember correctly it did generate a pulse for the STA. I believe that the newer machines generate this pulse for STA via CPtronic. Impression count has always been done via CPtronic.

 

Both totalizer and imp count?

 

Yes

 

So how could it go wrong if its done with softwere? There sould be something to command. A pulse at least.

 

Why do you think there is something wrong with your counter?

 

there was a malfunction once, the press miscounted the printed papers but, it has corrected automatically. i wonder how the system works.