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Help with OB40

8/13/2009 12:53 PM	Rate (0)
Kareto Posts: 16 Rating: (0)	Hi all I try to find description of OB40_MDL_ADDR (WORD) and OB40_POINT_ADDR (DWORD) but I can't find it . How logical base address of the module that triggers the interrupt, is encoding in a word? Can anybody explain me the structure of that parameters? Thanks Karen
Kareto Posts: 16 Rating: (0)
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8/13/2009 6:42 PM	Rate (0)
Sydney Gold Member Joined: 1/4/2008 Last visit: 7/2/2025 Posts: 703 Rating: (98)	Hello, when you select the OB40 in Simatic Manager press F1 and you'll get the detailed description about this OB. The address is a number so it can be represented as the WORD data type. Point address has a different meaning for a different modules, you'll see it in online help of the OB40. Regards Sydney

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8/14/2009 6:33 AM	Rate (0)
Kareto Posts: 16 Rating: (0)	Thanks Sydney, but I already read that helpand I can't find answers for my questions. I need detailed structure of thisvariables. for exapmple: if I have channel fault on 4th input port of AI8x16Bit witch is on 6th slot of ET200station witchIM153-2's address is 16350 what kind of information can I find in OB40? Can I analise channel faults up to broken port number? thanks
Kareto Posts: 16 Rating: (0)
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8/15/2009 11:41 AM	Rate (0)
Sydney Gold Member Joined: 1/4/2008 Last visit: 7/2/2025 Posts: 703 Rating: (98)	Kareto I need detailed structure of thisvariables. for exapmple: if I have channel fault on 4th input port of AI8x16Bit witch is on 6th slot of ET200station witchIM153-2's address is 16350 what kind of information can I find in OB40? From the online help of the OB40: OB40_MDL_ADDR - Logical base address of the module that triggers the interrupt Base address of the module is the address of the first channel on the module so you can identify the module itself. OB40_POINT_ADDR - With analog modules: Bit field contain information indicating which channel exceeded which limit The detailed information about this can be found in the modul specification. In this case if I remember well, the byte 8 means high limit exceeded (bit0 is for chn0) and byte 9 means low limit exceeded. Regards Sydney

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8/18/2009 5:41 AM	Rate (0)
Kareto Posts: 16 Rating: (0)	Thaks a lot Sydney!
Kareto Posts: 16 Rating: (0)
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8/18/2009 9:38 PM	Rate (0)
Sydney Gold Member Joined: 1/4/2008 Last visit: 7/2/2025 Posts: 703 Rating: (98)	You're welcome

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