PLC should go to start mode

Hello guys,

I have the same problem in a configuration that I have with 3 slaves. I would like that the PLC before it goes to start mode, despite that a slave has a problem and is turned off, the PLC goes to start mode despite that.

I have an OB82 and 86 but I saw that in case that the PLC was already in RUN mode and misses a slave (for example it is turned off for some reason), it does stay in RUN mode. But if all the system is turned off (PLC as well) and we power it on, so that all the devices are turned on and one slave does not receive voltage (I test it deliberately) then the PLC stays in STOP mode... :(

Could somebody suggest me what to do, to fix that? The goal is notwithstanding this problem at STARTUP that the PLC does make it and go to RUN mode.

Thank you

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Split from HELP ME PLZ CPU 315-2PN/DP ERROR .

Hi IBN -Service

you mean in CPU Properties->Startup->"Startup if preset configuration does not match actual configuration"?

That's the change I made accidentally a few hours ago and it seems a lot better, though it takes about 3-4 mins to switch from STARTUP to RUN.Or do you mean something different?

Thanks!

Perhaps you also try to reduce "max. waiting time"...

can't find the specific parameter... . A little help more plz?

Edit: You mean that window "Monitoring time for"->"Finished" message from modules, right? I'll try it tomorrow and see if things change.

Update: Works a lot better with new parameters set at 10secs. The PLC decides a lot faster that the actual configuration is not the same with the preset one and goes a lot faster in RUN mode.

If the slave is after a while turned on, the PLC establishes communication with him directly and the blinking BF LED goes away.

Danke IBN!