Twincat2 Ladder Diagram

Hello,

I am a beginner to PLC and now working with the PLC by using Twincat2 to build a Ladder Logic Diagram to generate the simulation of manufacturing line which the repeat cycle is needed.

How could it be done to make it repeat which it needs 5 cycles to produce 5 boxes to place on the conveyor?

Should I use the COUNTER with JUMP or should I use new POU with Structure Texted?

Thank you,
Nat

A counter should work fine. I haven't worked with Twincat for a few years now, but I wouldn't think you would need a JUMP instruction. Simply use the the "counter done" bit to move things forward after the 5 boxes are made.

Bubba.

willxfmr said:

A counter should work fine. I haven't worked with Twincat for a few years now, but I wouldn't think you would need a JUMP instruction. Simply use the the "counter done" bit to move things forward after the 5 boxes are made.

Bubba.

Click to expand...

Thank you for your suggestion.

I would like to ask a few more question, if I use Counter and set its preset value to be 5 (as I need 5 cycles for this station) each time that it count, is it going to start from the first rung again to start feeding the box or should I put any function or instruction to make it start all over again?

Nat

I don't know about TwinCat . . . but most PLC's continuously repeat their programs. What I would do, is write the program with the counter. After the counter hits zero reset the counter to five (last rung in the program) then run it and see if the counter resets to five and starts decrementing the next set. (And another set and another set etc. etc.)
MadPoet.