Siemens Simatic S7 Series System Manual

Program instructions
7.15 String
S7-200 SMART
322 System Manual, 09/2015, A5E03822230-AC
7.15.2
Copy substring from string
LAD / FBD
STL
Description
SSCPY IN,
INDX, N, OUT
The copy substring from string instruction copies the assigned number of charac-
ters N from the string specified by IN, starting at the index INDX, to a new
string assigned by OUT.
Note: The SSTR_CPY instruction operates on bytes and not characters. Because
Chinese characters are not represented by a single byte, unexpected results can
occur with the SSTR_CPY instruction with strings containing Chinese characters.
If you know the number of bytes that a character string occupies, you can use the
SSTR_CPY instruction with the correct number of bytes.
Non-fatal errors with ENO=0
SM bits affected
• 0006H Indirect address
• 0091H Operand out of range
• 009BH Index = 0
None
Input / output
Data type
Operand
IN
STRING
VB, LB, *VD, *LD, *AC, Constant string
OUT
STRING
VB, LB, *VD, *LD, *AC
INDX, N
BYTE
IB, QB, VB, MB, SMB, SB, LB, AC, *VD, *LD, *AC, Constant
Example: Copy substring instruction
AD
STL
Starting at the seventh byte after the
byte count in the string at VB0, copy 5
bytes to a new string at VB20.
Network 1
LD I0.0
SSCPY VB0, 7, 5, VB20

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.