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understand s5 program

Created by: plcauto at: 12/27/2013 12:28 AM (3 Replies)

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12/27/2013 12:28 AM	Rate (0)
plcauto Posts: 3 Rating: (0)	HI i have simatic S5 cpu 103U, and i want to understand this program: UN M 31.7 SPB =M001 B MW 38 L MB 0 SLW 1 B MW 38 T MB 0 U( L KM 00000000 10000000 B MW 38 L MB 0 >< F )
plcauto Posts: 3 Rating: (0)	Last edited by: O_Moderator at: 12/29/2013 1:07 PM new subject after splitting from /tf/WW/en/Posts/83832#top
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12/27/2013 12:31 AM	Rate (0)
plcauto Posts: 3 Rating: (0)	i want to think everybody try to help me. please i will be happy to understand this program
plcauto Posts: 3 Rating: (0)
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12/27/2013 8:49 AM	Rate (0)
Marcjan Platinum Member Joined: 4/22/2010 Last visit: 10/17/2024 Posts: 5697 Rating: (715)	Hello. I guess it's the B- instruction you have trouble with? B or in english Do is used for indirect addressing, you will find some explanation in this thread; S5 DO Instruction Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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12/27/2013 10:47 AM	Rate (0)
IBN-Service Posts: 8946 Rating: (999)	atba B MW 38 L MB 0 means indirect Access Example: inside MW 38 there is the value 100 B MW 38 => indirect value 100 loaded L MB 0 => "0" is a token for indirect value CPU is doing = L MB 100 (L MB [MW 38])
IBN-Service Posts: 8946 Rating: (999)
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