Navigation
Rating 
Thanks 1
| 11/7/2010 9:57 AM | |
Joined: 1/28/2009 Last visit: 10/26/2024 Posts: 6852 Rating:
|
Hello ,Why not writing a pulse bit cyclically to PLC,and Monitor it |
Last edited by: hdhosseini at: 4/2/2014 4:56 PM |
|
| 11/7/2010 10:27 AM | |
|
Posts: 111 Rating:
|
Hi hdhosseini, I don't understand your mean. Could you please explain more? If you meant to display this alarm on my Wincc, you are wrong, because I need to have an alarm in the field not in the control room. In other words, I want that plc senses this fault and make clear this alarm with a horn and flash in factory. This alarm tells local operators that we have no remote monitor over the process, so they need to control it manually. Regards |
| 11/7/2010 1:58 PM | |
|
Posts: 111 Rating:
|
Dear hdhosseini, How can I sense the change of m0.0 in my PLC regulary? Since you have suggested, infact, I must detect the frequency of M0.0 and I don't find a solution. Is it possible to send me a done project? Regards |
| 11/7/2010 2:49 PM | |
|
Joined: 1/28/2009 Last visit: 10/26/2024 Posts: 6852 Rating:
|
Dear sir or madam As I am out of office (actually in an airport), I can not provide a fully tested WINCC and PLC set up.Program in PLC is sth like this.Read the codes and comments.Inform in case of confusion! [code]//check lomg time on zero status AN M 0.0 L S5T#10S SD T 0 NOP 0 //CHECK LONG TIME ON ONE STATUS A M 0.0 L S5T#10S SD T 1 NOP 0 //////////// O T 0 O T 1 = M 0.1 //CONNECTION ERROR[/code] AttachmentWINCC_PLC.zip (689 Downloads) |
| 11/14/2010 12:50 PM | |
|
Posts: 111 Rating:
|
Hi hdhosseini , Thank you for your answer, your solution worked, however I want to know if there is an OB (like ob82) that detecs this fault communication. Regards |
| 11/14/2010 1:56 PM | |
|
Joined: 1/28/2009 Last visit: 10/26/2024 Posts: 6852 Rating:
|
Dear r2407 what is your method of communication between your PLC and PC? (MPI,PROFIBUS,ETHERNET) regards |
| 11/14/2010 2:15 PM | |
|
Posts: 111 Rating:
|
Hi, Industrial Ethernet |
| 11/14/2010 5:53 PM | |
|
Joined: 1/28/2009 Last visit: 10/26/2024 Posts: 6852 Rating:
|
Dear r2407 As you tested the proposed method , and it is a trick and actually is not a systematic solution. But, I believe this is the easiest way to check communication from WINCC runtime to Ethernet connection and validity of module. Regards |
Follow us on