5/3/2016 9:25 PM | |
Posts: 22 Rating:
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I'm having a similar issue using a S7-414-5H CPU. Every time the block MB_PNCL (FB915) is called return an error in the PLC buffer as you can see in the picture attached. the error says there is an area length problem. I have cheked the parameters in the DB and all the address are in valid intervals. The whole communication structure of the param DB was created using the ModbusTCP PN Red wizard. The second line in the event detail shows that the FB has a problem with the 60000 address Other error appears in the buffer, A090. I know this is because a licence problem. I appreciate any advice so that I can solve this problem. ------------------------------------------------------------------------------------------ |
Last edited by: andress at: 5/3/2016 9:33:05 PMLast edited by: Min_Moderator at: 5/4/2016 11:40:42 AMNew subject after splitting |
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5/4/2016 9:10 AM | |
Joined: 3/5/2014 Last visit: 8/5/2022 Posts: 5521 Rating:
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hi, I didn´t find something in the documentation of this Modbus Wizard. Do you use this one? I know from other Modbus-Application-blocks from Siemens that they are not really for free. You have to buy a license-code. Otherwise you will have a System-failure, like the one in your diagnostic buffer. I found following FAQ´s regarding your issues: How many licenses are required for the Modbus/TCP block in the S7-300/S7-400? hope this helps, . |
Last edited by: mopS04 at: 5/4/2016 9:11:12 AMFCK WAR! |
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6/17/2016 11:01 PM | |
Posts: 22 Rating:
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Dear mopS04 answering your question: Yes, I'm using the Wizard your refer in the link, which is for free download. I never was licence requested for install or use. I know the error A090 in the diagnostics buffer comes from the Modbus TCP licence. The licence we have was bougth for using with a CP-443 and we are using the PN interface of the CPU . The effects of no licence are only the anoying A090 message in the buffer, but the message send by the FB915 is totally different. Whats more I believe is related with long cycle time that affects the CPU once in a while. I already open a case for this issue and siemens support suggest solve the FB915 programming error. Do you think that by buying the ModbusTCP licence I will correct this issue? Regards,
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6/21/2016 6:08 PM | |
Posts: 22 Rating:
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Hi mopS04, Yes the FB915 is locked by siemens. I'm attaching pictures for FB915 (MB_PNHCL) which is working with the block FB912 (Job_list). I have attached too the param DB wich is used for the block FB915. I have to repeat this configuration for every device I have to communicate with the DCS, rigth now I have at least 30 connections. I thought it could be the problem, so I decided to disonnect all of them, and the error disappear, but as soon I reconect one of them the error shows again. No matter which one is recconected first, the error shows immediately. Attachmentfb915_call.zip (210 Downloads) |
Last edited by: andress at: 6/21/2016 6:10:34 PM |
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6/21/2016 6:28 PM | |
Posts: 22 Rating:
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This is what I see from the OS Alarm screen. |
6/21/2016 6:36 PM | |
Joined: 1/21/2013 Last visit: 6/6/2024 Posts: 4620 Rating:
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Hello, Sorry if I intrude, but if you look on Chapter 5, the photo on page 5-4 is the same as your posted above, is not that the two messages are related to license? modbus tcp pn redundant englisch - Siemens Industry Online Support |
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