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Run / Run-P in S7-400

10/1/2010 1:20 AM	Rate (0)
Osman_ Posts: 243 Rating: (4)	Hi In old s7-300 cpus there were Run/Run-p mode selection. If you forgot it in Run mode, you can't change program. Now I don't see them in new plc versions. I want to disable changing plc program with a button in S7-400. is it possible ? There will be a 0-1 button, it'll be forexample I0.0 if I0.0 is false, nobody will be able to change plc program. is it possible?
Osman_ Posts: 243 Rating: (4)
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10/1/2010 7:39 AM	Rate (0)
umencho Grandmaster Joined: 3/21/2006 Last visit: 10/16/2025 Posts: 10239 Rating: (1183)	What about write protoection option - http://support.automation.siemens.com/WW/view/en/16650102 Best regards, Hristo Mihalev

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10/7/2010 12:32 PM	Rate (0)
Osman_ Posts: 243 Rating: (4)	Thank you
Osman_ Posts: 243 Rating: (4)
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10/8/2010 2:30 PM	Rate (0)
dmelliot Advanced Member Joined: 9/17/2008 Last visit: 9/16/2025 Posts: 49 Rating: (4)	you can also use SFC109 "Protect". You could use your input (to write a W#16#0 or W#16#1) to control the protection level.

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This contribution was helpful to 1 thankful Users umencho

10/8/2010 3:07 PM	Rate (0)
umencho Grandmaster Joined: 3/21/2006 Last visit: 10/16/2025 Posts: 10239 Rating: (1183)	There hava some restrictions but basically is useful in some cases. More info at Password Protection for Access to Programmable Controllers Best regards, Hristo Mihalev

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