Siemens Simatic S7 Series System Manual

Program instructions
7.12 Move
S7-200 SMART
298 System Manual, 09/2015, A5E03822230-AC
Example: Block Move instruction
LAD
STL
Move (copy) data in source four byte
address sequence (VB20 to VB23) to
destination four byte address se-
quence (VB100 to VB103).
Network 1
LD I2.1
BMB VB20, VB100, 4
Source data values 30 31 32 33
Source data addresses
VB20
VB21
VB22
VB23
If I2.1 = 1, then execute BLKMOV_B to move source data values to destination addresses
Destination data values
30
31
32
33
Destination data addresses
VB100
VB101
VB102
VB103
7.12.3
Swap bytes
LAD / FBD
STL
Description
SWAP IN
The Swap Bytes instruction exchanges the most significant byte with the least signifi-
cant byte of the word IN.
Non-fatal errors with ENO = 0
SM bits affected
• 0006H Indirect address
None
Input / output
Data type
Operand
IN
WORD
IW, QW, VW, MW, SMW, SW, T, C, LW, AC, *VD, *LD, *AC

Siemens Simatic S7 Series Specifications

General

CPU	Varies by model (e.g., S7-300, S7-400, S7-1200, S7-1500)
Communication Interfaces	PROFIBUS, PROFINET, Ethernet, MPI
Programming	TIA Portal, STEP 7
Programming Languages	LAD, FBD, STL, SCL, GRAPH
I/O Modules	Digital, Analog, Specialty modules available
Operating Temperature	0°C to 60°C (standard models)
Mounting	DIN rail mounting
Operating Voltage	24V DC or 120/230V AC (varies by model)
Protection Class	IP20 (standard models)
Memory	Varies depending on the S7 model. Includes work memory (RAM) for program execution, load memory (EEPROM or Flash) for program storage, and system memory for operating system functions. Memory sizes range from kilobytes to megabytes.