Get Current CPU S71200 Status Tia Portal Wincc RT

calyon · Jan 18, 2017

Hello everyone,
I have 8xS71200 cpu fitted profinet with Wincc RT on pc station .I use tia portla v13 sp1 and i want to check and show current PLCs status on scada (RUN or Stop or Error) then i will send some value from scada to running PLCs .
But i cant reach the cpu status on wincc rt.there have some way see cpu status with wincc flexible on hmi panel but i wanna make it with wincc rt on pc station.
I hope someone can help me in here.

adfox · Jan 18, 2017

You can read PLC leds status and more. Look here
https://support.industry.siemens.com/cs/document/68397488/in-step-7-(tia-portal)-how-do-you-migrate-the-call-of-the-instruction-rdsysst-(sfc51)-from-s7-300-s7-400-to-s7-1500-?dti=0&lc=en-WW

You can use clock memory byte to check if it's changing.

Just used 'search function' for You.

http://www.plctalk.net/qanda/showthread.php?t=86749

calyon · Jan 19, 2017

adfox said:
You can read PLC leds status and more. Look here
https://support.industry.siemens.com/cs/document/68397488/in-step-7-(tia-portal)-how-do-you-migrate-the-call-of-the-instruction-rdsysst-(sfc51)-from-s7-300-s7-400-to-s7-1500-?dti=0&lc=en-WW

You can use clock memory byte to check if it's changing.

Just used 'search function' for You.

http://www.plctalk.net/qanda/showthread.php?t=86749

Did u use LED funciton before? Because i used this funciton with simulation in tia portla v13 then LED funciton always send "2" even stop mode of cpu.İ think the cpu freeze while cpu stop mode therefore LED function can not send "3" for Stop mode and i am looking another way

adfox · Jan 19, 2017

In next 24 hours I should be back near plc, i'll check it out and post.

Lare · Jan 19, 2017

calyon said:
Did u use LED funciton before? Because i used this funciton with simulation in tia portla v13 then LED funciton always send "2" even stop mode of cpu.İ think the cpu freeze while cpu stop mode therefore LED function can not send "3" for Stop mode and i am looking another way

Of course, when PLC stop eveything is left on program as before stop (only ooupts can have fallback status, otherwise PLC isn't stop mode.
Block is little bit misleading, you can't read PLC run led status correctly.
For knowing if PLC is running or stop you need watchdog pulse from PLC to HMI and look on script if pulse get stucked to "0" or "1", then make alarm no communication or PLC stop

grnick50 · Jan 19, 2017

If you are using WinCC Advanced then you can use a GetPLCmode event. This can return two values in an internal tag depending if the PLC is in STOP mode or RUN mode. The return values are 4 and 8 respectively. You can assign this event to a scheduled task and run it every minute.

adfox · Jan 19, 2017

I did this this way, moved plc clock byte to WinCC internal tag. Script launched every 5s checked if both tags have the same value.

calyon · Jan 25, 2017

adfox said:
I did this this way, moved plc clock byte to WinCC internal tag. Script launched every 5s checked if both tags have the same value.

Could you explain your way to us or Can you post your script here or pm to me pls ?

calyon · Jan 25, 2017

grnick50 said:
If you are using WinCC Advanced then you can use a GetPLCmode event. This can return two values in an internal tag depending if the PLC is in STOP mode or RUN mode. The return values are 4 and 8 respectively. You can assign this event to a scheduled task and run it every minute.

I am using wincc RT pro and there have not getPLCmode.

adfox · Jan 26, 2017

Look here.

https://support.industry.siemens.com/cs/document/382120/how-do-you-implement-tag-status-monitoring-or-connection-status-monitoring-in-wincc-?dti=0&lc=en-WW

Get Current CPU S71200 Status Tia Portal Wincc RT

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