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Read comm status of HMI on profinet

Created by: gdglisch82 at: 12/2/2014 7:08 PM (11 Replies)

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12/2/2014 7:08 PM	Rate (0)
gdglisch82 Posts: 56 Rating: (1)	Hi, When using Portal V13 professional I understand how to read the status of profinet IO nodes using the "DeviceStates" function. Is there a function or way to monitor the status of multiple HMI's? The HMi's do not seem to have a device number so I do not think "DeviceStates" will do this. The CPU is an S7-1500. Thanks in advance.
gdglisch82 Posts: 56 Rating: (1)
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12/2/2014 9:30 PM	Rate (0)
William_B Posts: 5225 Rating: (1198)	gdglisch82 Hi, When using Portal V13 professional I understand how to read the status of profinet IO nodes using the "DeviceStates" function. Is there a function or way to monitor the status of multiple HMI's? The HMi's do not seem to have a device number so I do not think "DeviceStates" will do this. The CPU is an S7-1500. Thanks in advance. Hi. Which HMIs do you have in the network? Basic or Comfort? It should be possible to create a "I am alive" pulse that originates from the PLC (set) and gets cleared from the HMI. Would this be enough for you? w
William_B Posts: 5225 Rating: (1198)
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12/2/2014 10:03 PM	Rate (0)
gdglisch82 Posts: 56 Rating: (1)	There are multiple comfort panels. How would this be done? It seems there is no block that will do this? Thanks again.
gdglisch82 Posts: 56 Rating: (1)
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12/2/2014 10:06 PM	Rate (0)
gdglisch82 Posts: 56 Rating: (1)	It seems I could just set a bit in the HMI, and once it goes lowI know that it is "gone"???
gdglisch82 Posts: 56 Rating: (1)
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12/2/2014 10:16 PM	Rate (0)
William_B Posts: 5225 Rating: (1198)	The COMFORT panels offers you much more. If setting a signal high from the panel - I do not think that will be helpful. What if you set the bit at regular intervals? In the BASIC panels I would make the bit set at each page change. Then have the PLC reset the bit. This way I know if the panel is actively used. With the COMFORT I am sure you can rig something to refresh a set bit at regular intervals. You could even have an event that monitors the bit for going low.. then the event simply let it go high. Personally I have not worked on COMFORT panels. I am sure however you have enough to chew on until someone else comes along or you solve the problem yourself. Okay?.. Good. w
William_B Posts: 5225 Rating: (1198)
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12/2/2014 11:01 PM	Rate (0)
gdglisch82 Posts: 56 Rating: (1)	Ok...so it seem that generating a pulse from the HMI and detecting when it quits changing is about the only way to do this? It seems easy enough, I just want to explore all options. Thank you.
gdglisch82 Posts: 56 Rating: (1)
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12/3/2014 2:50 AM	Rate (1)
0_Einstein Diamond Expert Joined: 7/7/2010 Last visit: 1/23/2025 Posts: 15549 Rating: (2467)	gdglisch82 Ok...so it seem that generating a pulse from the HMI and detecting when it quits changing is about the only way to do this? It seems easy enough, I just want to explore all options. Thank you. With the data coordination between the HMI and you can see if an online HMI is still working. One of the configuration bits is a heartbeat that you can use to detect the system is offline. You can also detect what screen is currently being displayed as well as push new screens to the HMI. This is a little bit of a hack in my opinion but it works well for single HMI projects, and less well the more HMIs you have - unless you want all screens to show the exact same thing at all times.
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12/3/2014 3:05 PM	Rate (0)
gdglisch82 Posts: 56 Rating: (1)	huggy_d1 gdglisch82 Ok...so it seem that generating a pulse from the HMI and detecting when it quits changing is about the only way to do this? It seems easy enough, I just want to explore all options. Thank you. With the data coordination between the HMI and you can see if an online HMI is still working. One of the configuration bits is a heartbeat that you can use to detect the system is offline. You can also detect what screen is currently being displayed as well as push new screens to the HMI. This is a little bit of a hack in my opinion but it works well for single HMI projects, and less well the more HMIs you have - unless you want all screens to show the exact same thing at all times. We want to let the PLC know that the HMI is there or not. What configuration bits are you refferring to? Thanks.
gdglisch82 Posts: 56 Rating: (1)
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12/3/2014 3:22 PM	Rate (5)
Jens_app Gold Member Joined: 1/5/2011 Last visit: 11/29/2024 Posts: 815 Rating: (123)	gdglisch82 We want to let the PLC know that the HMI is there or not. What configuration bits are you refferring to? Thanks. Dear gdglisch82, like huggy already mentioned this can be done with the "life bit" of the comfort panel. Quoting Siemens TiA Portal manual: Life bit The life bit is inverted by the HMI device at intervals of approximately one second. By querying this bit in the PLC program, you can check whether or not the connection to the HMI device still exists. Do a search on Area pointer "Coordination" in your TiA portal help. You can enable the coordination area pointer by going to the connections tab of your HMI device and click on "Area pointer", enable Coordination and select an address. The coordination area pointer has a length of 1 word, and the thirth bit (DBX0.2) is the life bit. First and second are startup bit and operation mode. Hope this helps and thank huggy for this :) (I've added a screenshot in case you have troubles finding the coordination area pointer) Kr, Jens Attachment ComfortPanelCoordination_LifeBit.jpg (1265 Downloads)
	Last edited by: Jens_app at: 12/3/2014 3:29 PM ADDED SCREENSHOT Keep it simple and on-topic. A simple straight-to-the-point answer is often of more quality than a complicated one.
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12/3/2014 3:54 PM	Rate (0)
gdglisch82 Posts: 56 Rating: (1)	Thank you all for the help. This is what I have been looking for.
gdglisch82 Posts: 56 Rating: (1)
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This contribution was helpful to 1 thankful Users Jens_app

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