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STEP 7 / STEP 7 Lite

Reading PLC status with SFC51

Thread Starter: Hunky   Started: 9/8/2008 12:59 PM   Replies: 4

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  9/8/2008, 12:59 PM
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Marcio wrote:

I make the diagnosis of PLC through the SFC51. With him it is possible:
- Read the status list of the CPU and the all of modules;
- Read the status of all leds of CPU(included Force);
- Read the status of all power supplies.

I like to use the SFC51, it is very easy to use it


Dear Marcio,

I am not aware how to use this SFC 51. Can you please help me for understanding this SFC. Do you have sample program with this SFC to just read the PLC Status.

Thanks in advance for your help.


Regards
PLC Engineer




=== Edited by CS Moderator @ 9/26/2008 5:19 PM [GMT ] ===
new subject after splitting
refered posting inserted

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  9/27/2008, 8:04 AM
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Dear Hunky,

This shows what identification data you can read out of SIMATIC S7 CPUs.
http://support.automation.siemens.com/WW/view/en/22742674

And to understand SFC 51 and evaluation of its parameters, you should read the attached PDF.

I believe you can find many issues about SFC51 just if you search both Forum and FAQs.

Attachment: SFC51.pdf  (1095 Downloads)

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  9/27/2008, 6:19 PM
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Hunky wrote:
Marcio wrote:

I make the diagnosis of PLC through the SFC51. With him it is possible:
- Read the status list of the CPU and the all of modules;
- Read the status of all leds of CPU(included Force);
- Read the status of all power supplies.

I like to use the SFC51, it is very easy to use it


Dear Marcio,

I am not aware how to use this SFC 51. Can you please help me for understanding this SFC. Do you have sample program with this SFC to just read the PLC Status.

Thanks in advance for your help.
Regards
PLC Engineer


Hi
Here you can download the Sample Program & Manual  for  how to use the SFC51  for Reading the PLC Status. 

http://support.automation.siemens.com/WW/view/en/23330722
Getting the Status for the CPU LED Indicators

I hope it will be useful to you.



=== Edited by Deeps @ 9/27/2008 6:22 PM [GMT ] ===


=== Edited by Deeps @ 9/27/2008 6:20 PM [GMT ] ===


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  4/4/2012, 12:54 PM
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 yes this program is good for indication for faults, but it shows run bit high even though PLC in stop mode. Do yo u have any other sample program to indiate all Led Status laugh
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  6/30/2014, 5:37 PM
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follow up question published by Rudrani is split to a seperate thread with the subject Reading RUN LED status with SFC51


Best regards
CS Moderator

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