ZCP Instruction

[mr_electrician]

Hi group!

I am struggling to figure out what I am doing with the Limit instruction (ZCP 088).  I want to turn on a permissive if the compared word is between 1 and 12.  Rockwell makes this so much easier!!!

It looks like my "=" instruction is not correct but this is how they show it in the manual???????

 

 

[Mendon Systems]

Try using the mnemonic  P_EQ which CXP interprets as the Equals Flag.

[mr_electrician]

2 hours ago, Mendon Systems said:

Try using the mnemonic  P_EQ which CXP interprets as the Equals Flag.

Thanks!  That did it.

[Sergei Troizky]

Two inline comparisons in series give the same result, but execute 20 times faster (in CP1H).

[Michael Walsh]

I agree with Sergei, this is a good way to do it:

[mr_electrician]

On 20/11/2018 at 9:33 AM, Michael Walsh said:

I agree with Sergei, this is a good way to do it:

If this is the way to do then why does OMRON have the ZCP instruction?????

[BobB]

Hangover from older PLCs where symbol inline instructions were not available.