1/2/2013 4:43 PM | |
Joined: 9/2/2012 Last visit: 8/15/2024 Posts: 711 Rating: (30) |
Dear all, Am facing some problem with 1215 ac/dc/rly type cpu with FW 3.0. In my system, am communicating with CNC machine using PN-PN coupler. 16 byted of date are configured to send and recieve , address starts from 2. I am able to establish the communication and transfer the data. My problem is that, whenever power restarts the cpu, error led is blinking ( all other are healthy-- pn-pn coupler not showinfg any fault), but am able to transfer the data from both the side even the error exists. If i download the hardware configuration again, it become ok.till next power restarts.. The diagnostic buffer showing "New I/O access error during process image update /n input 2 (16 Bytes) will temporarily not be updated as part of the updating of process image 0 " . Please see the attached file for diagnostic buffer entry. please suggest to avoid this problem Thanks n regards Vipz
AttachmentDiagnostics.pdf (197 Downloads) |
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1/2/2013 5:18 PM | |
Joined: 7/7/2010 Last visit: 10/7/2024 Posts: 15270 Rating: (2422)
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How long does the error led remain blinking? Do you have any logic in the plc that reads or writes any PN data before it is actually online and available for reading/writing? Take a look at the attached settings for a recent project that uses what I think of as default settings for my s7-1200 projects. If you are not looking for the remote device to be online before attempting to read/write in your plc logic, you should expect some errors. If the device adheres to PN standards and provides diagnostic data, you should be able to get diag data from the remote device using ModuleStatesor DeviceStatesinstructions. After some testing, you should be able to see when the field device goes online, see which diagnostic bit toggles, and use that prior to accessing the process image data for that device. You can put all calls that access the remote device in an FB or FC and update an internal DB or M tag for use within the plc logic. In this way, you can only access the field device data when it is actually available. If none of this is useful, try the Support Requestoption. AttachmentPortal_DistrIO_Settings.zip (174 Downloads) |
science guy |
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1/8/2013 11:41 AM | |
Joined: 9/2/2012 Last visit: 8/15/2024 Posts: 711 Rating: (30) |
Dear all, please suggest some idea Regards Vipz
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