SIMATIC S5 / STEP 5

Logic

Thread Starter: Karnan   Started: 7/13/2012 3:41 PM   Replies: 1

  7/13/2012, 3:41 PM

Karnan Joined 12/16/2011 Last visit: 5/21/2013 Posts: 217 Rating:  (4)	(0)  Hai All, Please Anyone tell me the meaning of logic, C DB 10 DO FW100 L DL 0 L FY9 !=F =F100.0 If Anyone Having operating & Commissioning Manuals of WS 420-20 HMI,Please give a link.. Please Anyone give clarification on pointer DO. Thanks&Regards, Raj
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  7/14/2012, 1:35 PM

jklm Joined 12/22/2006 Last visit: 5/18/2013 Posts: 1295 Rating:  (151)

(0)  Hello, C DB10 just opens the datablock 10, telling that the next commands will use that from that block. When executing the couple of instructions DO FW100 L DL0 you do not load DL0, but the DL with the index specified in FW100. Example: If FW100 contains the value 8, you load DL8 The instructions L FY9 !=F =F100.0 check if the loaded value equals 9, and if true, flag F100.0 is set to "1". Else F100.0 is reset. Best regards jklm Suggestion was helpful? Thanks to rate it.

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