Siemens Simatic S7 Series System Manual

Program instructions
7.13 Program control
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
311
Divergence of a control stream, depending on transition conditions
In other situations, a control stream might be directed into one of several possible control
streams, depending upon which transition condition becomes true first.
Example: SCR divergent flow control, depending of transition conditions
LAD
STL
Beginning of state L control region
Network 1
LSCR S3.4
Transition to state M
Network 2
LD M2.3
SCRT S3.5
Transition to state N
Network 3
LD I3.3
SCRT S6.5
End of SCR region for state L
Network 4
SCRE

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.