Hi,

I want to build FC, which do something 8 times and to do that I using JMP instruction, but when I run it, PLC STOP program and I have an error: 

Can somebody tell me, what I doing wrong.

Best regards,

JK

Hello,

Please have in mind the following:

- When you use Temp variables, you must first write to it, before you read them!!!

Best regards,

Wizard

Hi

 I would use SCL for a Loop. I think you go into a infinite loop, thats why your scantime is exceeded

BR._Sven

jasslo

Hi,

I want to build FC, which do something 8 times and to do that I using JMP instruction, but when I run it, PLC STOP program and I have an error: 

Temporary CPU error: Maximum program cycle time exceeded twice

set value: 150 milliseconds

CPU changes to STOP mode (system reaction)

Can somebody tell me, what I doing wrong.

Best regards,

JK

Does you CTU counts? No. So you have endless loop and your scan time overflows.

CTU needs to see state changes from 0 to 1 and back to count anything.

Wizard

Hello,

Please have in mind the following:

- When you use Temp variables, you must first write to it, before you read them!!!

Best regards,

Wizard

In S7-1200 all temps are always initialized I think. In case of numeric types it's 0.