Siemens Simatic S7 Series System Manual

Program instructions
7.15 String
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
321
Error conditions with ENO = 0
SM bits affected
• 0006H Indirect address
• 0091H Operand out of range
None
Inputs/Outputs
Data types
Operands
IN
STRING
VB, LB, *VD, *LD, *AC, Constant string
OUT
STRING
VB, LB, *VD, *LD, *AC
Example: Concatenate string, copy string, and string length Instructions
LAD
STL
1. Append the string "WORLD" to the
string at VB0.
2. Copy the string at VB0 to a new string
at VB100.
3. Get the length of the string that starts
at VB100.
Network 1
LD I0.0
SCAT "WORLD", VB0
SCPY VB0, VB100
SLEN VB100, AC0

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.