Skip to Content

Register Login

Industry Online Support

Technical Forum

Navigation

HOW TO REMOVE FORCE ON THE OUTPUT (DO) IN S7 317 CPU?

Created by: Horst G at: 12/22/2010 9:38 AM (12 Replies)

Rating (0)

Thanks 0

Result pages:: |; 1 | 2; |

13 Entries

Entries per page: 10 | all

12/22/2010 9:38 AM	Rate (0)
Horst G Posts: 4 Rating: (0)	We have a profibus system with S7 300 - 400 series, we connect trough de profibus. We made a force in a var table but we can't remove or deletethe force.The helpfile gives no solution. We have trydeall the explenations in de helpfile. Please help!
Horst G Posts: 4 Rating: (0)
Suggestion To thank Quote Answer

12/22/2010 10:20 AM	Rate (0)
Darius Platinum Member Joined: 9/28/2005 Last visit: 9/16/2020 Posts: 2957 Rating: (235)	Hello, Have you tried "Variable --> Stop forcing" in variable table ?
	Best regards, Darius
Suggestion To thank Quote Answer

12/22/2010 10:37 AM	Rate (0)
Horst G Posts: 4 Rating: (0)	Yes, we have also tried "Variable --> Stop forcing" in the variable table ? After this we refreshed de var table to close and open it again. The force is still coming back. (we don't save the var table).
Horst G Posts: 4 Rating: (0)
Suggestion To thank Quote Answer

12/22/2010 10:45 AM	Rate (0)
Darius Platinum Member Joined: 9/28/2005 Last visit: 9/16/2020 Posts: 2957 Rating: (235)	When you do stop forcing what happens to FRCE LED on PLC ? Is it off ? I don't understand what problem you have. Is it not possible to stop forcing really in PLC or you can disable forcing in software only.
	Best regards, Darius
Suggestion To thank Quote Answer

12/22/2010 11:55 AM	Rate (0)
Horst G Posts: 4 Rating: (0)	When I force, the FRCE LED on PLC is off, but de output ismade what ever i put in (true or false valve open or close). Iam not sure if the force is in software or PLC, because we only havein the CP315 a force led and not in the ET200M where the output is. bdw I am connecting truh a ET200 profibus, Software is in the CP315-2DP (not 317). The output is in a ET200M with only leds SF & BF. The software i use isSimatic Manager Step7 V5.4 + SP4rev K5.4.4.0
Horst G Posts: 4 Rating: (0)
Suggestion To thank Quote Answer

12/22/2010 12:48 PM	Rate (0)
Darius Platinum Member Joined: 9/28/2005 Last visit: 9/16/2020 Posts: 2957 Rating: (235)	Its don't matter where output is located. Force initiator is PLC, so FRCE LED should be ON on the PLC. Ok lets get back to the problem. When you choose start force you should get open new variable table window. in that window you set outputs and you see letter "F". So you should do stop forcing on that newly opened window. If this is not helping then I can suspect corrupted installation of software, because stop forcing should really stop it. I've done it many times and was no problem. One more question. What operating system do you use ? If you use Vista or Windows 7 then please be sure to turn off user access controll (UAC).
	Best regards, Darius
Suggestion To thank Quote Answer

12/22/2010 1:39 PM	Rate (0)
Horst G Posts: 4 Rating: (0)	Our operating systemis WindowsXp Laptop SiemensPG. How can i detect corrupted installation of software?
Horst G Posts: 4 Rating: (0)
Suggestion To thank Quote Answer

12/22/2010 2:46 PM	Rate (0)
Darius Platinum Member Joined: 9/28/2005 Last visit: 9/16/2020 Posts: 2957 Rating: (235)	There is no such detection techniques. Its hard to tell if its software installation problem or maybe some antivirus or other reason. I can recommend to do repair installation of Step-7 and see if it helps. After repairing from DVD apply latest service pack and check if problem still exists
	Best regards, Darius
Suggestion To thank Quote Answer

9/13/2013 1:38 PM	Rate (0)
CS Moderator Moderator Joined: 9/1/2005 Last visit: 4/16/2021 Posts: 3950 Rating: (187)	new question published by R. Whiteis split to a seperate thread with the subject forcing inputs using Step 5.4 on a S7-317 - how do I end a force?. Best regards CS Moderator

Suggestion To thank Quote Answer

4/9/2017 11:58 AM	Rate (0)
moghimian.s Experienced Member Joined: 8/19/2015 Last visit: 4/7/2021 Posts: 73 Rating: (0)	Hi , You can remove a force on a value in this way: 1.right click on the cpu that you forced it and choose this one: Display force values 2.then VALUE--->Stop force values 3.Close the window It works😉

Suggestion To thank Quote Answer

|

Share this page:

Share this page on...

Follow us on