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SFC 58 and FM 458-1 DP - Errorcode 8090

Created by: LubomirK at: 4/1/2009 11:25 PM (12 Replies)

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4/14/2009 10:21 AM	Rate (0)
Sydney Gold Member Joined: 1/4/2008 Last visit: 12/22/2025 Posts: 703 Rating: (98)	Hello, if you use the simple load/transfer (or MOVE in LAD) through theperiphery I/O address,you would use the S7WR/S7RD blocks on the FM side (in CFC). Regards Sydney

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4/17/2009 9:44 PM	Rate (0)
LubomirK Advanced Member Joined: 4/1/2009 Last visit: 9/9/2025 Posts: 29 Rating: (0)	HI Can I use MOVE block in step7 program to read one bit which was sended from CFC to CPU? Regards POLIP

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4/18/2009 12:42 AM	Rate (0)
Sydney Gold Member Joined: 1/4/2008 Last visit: 12/22/2025 Posts: 703 Rating: (98)	Basically no, the MOVE box can copy only BYTE, WORD, or DWORD data objects, for BOOL type evaluatingare used logic blocks like AND, OR etc. But in this case you read the peripheral inputs, which can't be read by bits, you have to read at least byte. So you can use the MOVE box for transfer of the whole word PIW512 to another memory, for example TEMP or M area, which then could be evaluated as BOOL data type variables. Regards Sydney

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