s5 - stop at settled time???

[bogdan_cioric]

Hello, please tell me if is possible to send cpu (cpu 115u - 941/942) to stop at settled time. for example how to proceed to stop cpu at december 25, 2005 07:00.
Thanks for your advice.
bogdan

 

[parky]

Why do you want to stop a plc on Xmas day? are you on a callout bonus over Xmas?.

Well if you want, create a clock in code, when you get to the time required, call a block that doesn't exist or call a db & it will stop if you have no diag. ob's programmed.

 

[jvdcande]

You can also use a STS or STP instruction to stop the PLC. Sorry if these mnemonics are not to be found in the English version, but I always use the German version.

I don't see why anybody would ever want to stop a PLC on a certain conditin. In fact, I always tell my trainees that the stop instructions should be the very last resort to turn to.

Bogdan, maybe you can shed some light, so we can learn.

Kind regards,

 

[coa]

You have to check that CPU941/942 has real time clock. From Siemens documentation only 943/944 has. You may need outside clock from HMI or others.