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Analogue input module & diagnostics

Created by: Nikzitronik at: 9/10/2012 9:21 PM (4 Replies)

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9/10/2012 9:21 PM	Rate (0)
Nikzitronik Posts: 150 Rating: (17)	Dear all, I have an S7-300 system with two analog cards: 2 x 6ES7 331-1KF02-0AB0 1 x 6ES7 331-7KF02-0AB0 I am using SFC 51 to read the status of the modules.As per the manual "S7-300 Automation system module data" appendix B.2 I can succesfully read the status of the modules, but only bytes 0,1,2 & 3. I dont see in the SFC51 DR array any data in bytes 4,5,6 & 7. Also I dont see any data from byte 8 onwards where the channel specific data should be located. Any Idea why is this happening? At the moment I am using PLCsim to check the code. I understand that the first two analog modules do not have diagnostics, so I would expect that there will be no data in byte 8 and onwards, but this is not what I would expect for the third AI card which has diagnostics and they are enabled. regards
Nikzitronik Posts: 150 Rating: (17)
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9/12/2012 10:09 AM	Rate (0)
Simaticus Bronze Member Joined: 1/30/2007 Last visit: 6/3/2022 Posts: 262 Rating: (24)	Hi Nikzitronik, what cpu are you using (firmware version?) what im are you using (firmware version?) and what step7 version are you using? c u

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9/12/2012 3:58 PM	Rate (0)
Nikzitronik Posts: 150 Rating: (17)	Dear Simaticus CPU type: 314C-2 PN/DP FW3.3 No IM used Step7 TIA Portal V11 SP2 Regards.
Nikzitronik Posts: 150 Rating: (17)
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2/14/2013 10:24 PM	Rate (0)
XC35 Advanced Member Joined: 8/17/2010 Last visit: 7/25/2024 Posts: 3 Rating: (0)	It looks like you are using DS0. Read DS1. Check page 525 (where section B.1) starts. DS0 gives you only 4 bytes.

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12/13/2013 12:31 PM	Rate (0)
O_Moderator Diamond Member Joined: 4/24/2009 Last visit: 8/20/2024 Posts: 2682 Rating: (135)	New question splitted to without giving any current input my default count value is 32765 how can i change it to 0 count initially Best regards O_Moderator
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