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S5 to S7 LIR0

Created by: yuwa at: 6/22/2010 11:35 AM (2 Replies)

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6/22/2010 11:35 AM	Rate (0)
yuwa Posts: 62 Rating: (2)	Hi, I have to convert program from S5 to S7. There are some function which can not convert directly. Most of them are LIR0. Please advise what is this function use for. S5-115U CPU 943 FB171: WERTE-HP ... ... C DB17 ... ... L KF +0 L KH E558 ( I look in CPU943 manual, this address is DB172) LIR 0 ( load data which accu-1 address, butwhichDW? or it read length of DB?) !=F ( DW0 of DB172 contain number of value in DB172) JC =EROR(I guess this is to check whether there's data in DB) T FW232 LIR 0 ( ??? ) T FY201 L FW232 L KF +2 -F LIR 0 L KF +5 -F L FY201 >F JC=ENDE EROR : R F199.2 ENDE : *** Thank you in advance, Yuwanee
yuwa Posts: 62 Rating: (2)
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6/22/2010 12:07 PM	Rate (0)
yy1 Gold Member Joined: 3/24/2009 Last visit: 1/5/2023 Posts: 535 Rating: (110)	Dear yuwanee, I think, that you will find good information in this thread. As far as I can remember 'KH E558' gives you the start-adress of the datablock Best regards, yy1
	Last edited by: yy1 at: 6/22/2010 2:36 PM start-adress instead of length Last edited by: yy1 at: 6/22/2010 12:34 PM
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12/9/2010 9:59 AM	Rate (0)
lambertws Posts: 58 Rating: (0)	I have the same problem here yuwanee, and not yet get the solution. Have you gotten the solution? I cannot find one in the forum. L KF +0 L KH E558 //this is the absolute address of DB172 LIR 0 //ACCU1 now contains address of DW0 of DB172 !=F //compared to E558?? to ensure that the LIR works?? JC =EROR T FW232 //FW232 now contains address of DW0 of DB172 LIR 0 //I do not understand why the program do the LIR with the result of LIR?? Is the DW0 contain the absolute address of other? T FY201 L FW232 L KF +2 -F //what will happen if the address of DW0 is subtracted?? point to previous DBs DW?? LIR 0 //LIR of the LIR result once more L KF +5 -F L FY201 >F JC=ENDE EROR : R F199.2 ENDE : ***
lambertws Posts: 58 Rating: (0)	Last edited by: lambertws at: 12/9/2010 10:02 AM
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