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RUN / STOP KEY

Created by: Denilson Pegaia at: 7/17/2009 5:02 PM (21 Replies)

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4/22/2010 12:42 PM	Rate (0)
cmjaume Posts: 2 Rating: (0)	SORRY by my mistake. The new adress is the correct to LINK Jaume
cmjaume Posts: 2 Rating: (0)
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5/4/2010 8:41 PM	Rate (0)
Aminadra Posts: 27 Rating: (4)	Hi, even though ther is no RUN/STOP switch in the S7-1200, you can link an external switch,(DI or HMI) to the STP block in the PLC. this will turn off the CPU. However i am unable to find anything that can run it back again. Regards
Aminadra Posts: 27 Rating: (4)
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5/6/2010 7:34 PM	Rate (0)
Tomy Master Gold Member Joined: 5/4/2009 Last visit: 5/28/2024 Posts: 914 Rating: (40)	Dear Aminadra... Can show us how, would please attach a program demonstrating how? Thank you in advance. Tomy.
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5/13/2010 10:39 AM	Rate (0)
Aminadra Posts: 27 Rating: (4)	Hello, below is the way to add the stop fctthe CPU on the s71200: Under the extended instructions menu, program control,add the STP block to the program Add an input switch (ex I0.0) to enable the block. once the input is set to "1" the CPU stops and all the outputs are assigned to "0" i will add a sample code later since i cannot upload a file from work Regards Aminadra
Aminadra Posts: 27 Rating: (4)
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This contribution was helpful to 1 thankful Users Tomy Master

5/19/2010 12:45 PM	Rate (0)
Alfa Posts: 24 Rating: (1)	Hmmm, so is it possible to make "software" run/stop switch to the KTP-panel? Then the operator could switch the 1200-cpu to the run/stop mode.
Alfa Posts: 24 Rating: (1)
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This contribution was helpful to 1 thankful Users Tomy Master

5/20/2010 12:49 PM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 11/4/2024 Posts: 4351 Rating: (1452)	Hi, The HMI don't have STEP 7 Basic function (Run/Stop commands). If the HMI gives a comand to be interpreted by the user program on PLC, you can STOP, however once in STOP mode, the user program runs no more, and couldn't take any action (in this case put the CPU goes to RUN).
	Denilson Pegaia Siemens Industry Sector Technical Support
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5/21/2010 6:29 PM	Rate (0)
Zunar Posts: 60 Rating: (6)	One can always insert an empty memory card into the S7-1200, that will take it to stop. This should be used as a last resort though, nothing can really replace the wiring and configuration of an emergency stop button.
Zunar Posts: 60 Rating: (6)
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6/17/2010 11:05 AM	Rate (0)
Aminadra Posts: 27 Rating: (4)	Hello, The only way to put the PLC in run mode again after being stopped ( STP function block ) is to turn the PLC OFF-ON, and under the hardware configuration set the PLC to Auto run after power On Hope this helps Regards Aminadra
Aminadra Posts: 27 Rating: (4)
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This contribution was helpful to 1 thankful Users Saruca

6/18/2010 8:51 PM	Rate (0)
Aminadra Posts: 27 Rating: (4)	hello, below is a sample of the stop function in the S7-1200 that turns the CPU Off. Regards Aminadra Attachment Stop-CPU-S7-1200.JPG (782 Downloads)
Aminadra Posts: 27 Rating: (4)
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6/20/2010 8:40 PM	Rate (0)
Darius Platinum Member Joined: 9/28/2005 Last visit: 11/5/2024 Posts: 2957 Rating: (242)	Hello all, I've contacted Siemens support some weeeks ago about lots of issues with S7-1200. Run/Stop switch was one of the issues. I have their promise that lots of issues will be fixed with the new version of Step-7 Basic, but I don't know what will happed with that switch. Hope we will get new hardware release with this switch. I believe that it will be implemented some day. By the way, don't use memory cards to stop CPU. The big problem in this case that this card's slot is exactly the same as SD card slot. So if you accidenty plug just usual SD card (not Siemens) then PLC will go to stop forever. You can power cycle the CPU, but it is still in STOP mode. The only way is to connect your PG and push "RUN" button in software. So be careful !
	Best regards, Darius
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