Comparison of the Mover and Rotate Commands in STEP7 Micro and STEP5 Www.otomasyonegitimi.com

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show the entry listComparison of the mover and rotate commands in STEP7 Micro and STEP5

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QUESTION:What is the difference in the configuration of the move and rotate commands in STEP7 Micro and STEP5 inSTL mode?

ANSWER:The table below compares the move and rotate commands in STEP7 Micro and STEP5. In STEP7 Microyou use the command SHR_X with X= B (byte),W (word) and DW (double-word) to move the contents of INto OUT by "N places". In the case of move commands, the spaces of the moved bits are occupied by "0". Inthe case of rotate commands the bits are moved to the other side (to left in the case of rotate right) andreinserted into the memory area.

The "Permissible operands" column lists the operands of the command together with possible address areasand a relevant example.

In STEP5 the move and rotate commands are executed independent of the result of logic operation (RLO).In STEP7 Micro these commands are executed ONLY when the query of the top stack value is equal to"1" (e.g. LD E 0.6 must be "1").

Operand area in STEP5 Operand area in STEP7 MICRO

F Flag M Bit memory

I Digital inputs I Digital inputs

Q Digital outputs Q Digital outputs

D Data bit of a data word from a datablock

V Variable memory

K Constants SM Special marker

AC Accus 0 to 3

S Sequence control system relay

STEP5 S7Micro

Operation Permissible

operand

Operation Permissible operand

Move IN bytes by Nbits to the right andstore in OUT

Non-existent

MOVBSHR_B

IN, OUTOUT,N

IN:VB,IB,QB,MB,constants,AC,SMB,SBN :VB,IB,QB,MB,constants,AC,SMB,SBOUT:VB,IB,QB,MB,SMB,AC,SB

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Rotate IN bytes byN bits to the rightand store in OUT

Non-existent

MOVBROR_B

IN, OUTOUT,N

IN:VB,IB,QB,MB,constants,AC,SMB,SBN :VB,IB,QB,MB,constants,AC,SMB,SB

OUT:VB,IB,QB,MB,SMB,AC,SB(only CPU215+216)

Rotate IN words byN bits to the rightand store in OUT

LRRWT

INNOUT

IN:EW,AW, MW,DW,N: 0 to 15OUT:EW,AW, MW,DW,

MOVWROR_W

IN, OUTOUT,N

IN:VW,EW,AW,MW,SMW,AC,SW,T,ZN :VB,IB,QB,MB,constants,AC,SMB,SBOUT:VW,EW,AW,MW,SMW,AC,SW,T,Z

Rotate IN double-word by N bits tothe right and storein OUT

LRRDT

INNOUT

IN:ED,AD, MD,DW,KF,KT,KH,KY,KZ,KM,KGN: 0 to 32OUT:ED,AD, MDW,DW,

MOVDROR_DW

IN, OUTOUT,N

IN:VD,ED,AD,MD,SMD,AC,SD,T,ZN :VB,IB,QB,MB,constants,AC,SMB,SBOUT:VD,ED,AD,MD, SMD,AC,SD

Rotate IN bytes byN bits to the left andstore in OUT

Non-existent

MOVBROL_B

IN, OUTOUT,N

IN:VB,IB,QB,MB,constants,AC,SMB,SBN :VB,IB,QB,MB,constants,AC,SMB,SBOUT:VB,IB,QB,MB,SMB,AC,SB(only CPU215+216)

Rotate IN words byN bits to the left andstore in OUT

LRLWT

INNOUT

IN:EW,AW, MW,DW,N: 0 to 15OUT:EW,AW, MW,DW,

MOVWROL_W

IN, OUTOUT,N

IN:VW,EW,AW,MW,SMW,AC,SW,T,ZN :VB,IB,QB,MB,constants,AC,SMB,SBOUT:VW,EW,AW,MW,SMW,AC,SW,T,Z

Rotate IN double-word by N bits tothe left and store in

LRLDT

INNOUT

MOVDROL_DW

IN, OUTOUT,N





OUTIN:ED,AD, MD,DW,KF,KT,KH,KY,KZ,KM,KGN: 0 to 32OUT:

ED,AD, MDW,DW,

IN:VD,ED,AD,MD,SMD,AC,SD,T,ZN :VB,IB,QB,MB,constants,AC,SMB,SBOUT:VD,ED,AD,MD, SMD,AC,SD

Entry ID:363421 Date:1998-07-09

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Comparison of the Mover and Rotate Commands in STEP7 Micro and STEP5 Www.otomasyonegitimi.com