Siemens SIMATIC S7-200, Системное руководство, Страница: 341 / 866

Program instructions
7.12 Move
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
341
Example: Swap instructions
LAD STL
Network 1
LD I2.1
SWAP VW50
Hexadecimal data values D6 C3
Data addresses VB50 VB51
If I2.1 = 1, then execute SWAP to exchange the byte data in a data word
Hexadecimal data values
C3 D6
Data addresses VB50 VB51
7.12.4 Move byte immediate (read and write)
LAD / FBD STL Description
BIR IN, OUT
The Move Byte Immediate Read instruction reads the state of physical input IN
and writes the result to the memory address OUT, but the process image register
is not updated.
BIW IN, OUT
The Move Byte Immediate Write instruction reads the data from the memory
address IN and writes to physical output OUT, and the corresponding process
image location.
Non-fatal errors with ENO = 0 SM bits affected
• 0006H Indirect address
•
Unable to access expansion mod-
ule
None
Input / output Data type Operand
IN (BIR) BYTE IB, *VD, *LD, *AC
IN (BIW) BYTE B, QB, VB, MB, SMB, SB, LB, AC, *VD, *LD, *AC, Constant
OUT (BIR) BYTE IB, QB, VB, MB, SMB, SB, LB, AC, *VD, *LD, *AC
OUT (BIW) BYTE QB, *VD, *LD, *AC