Siemens Simatic S7 Series User Manual

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Boxes Boxes represent various instructions or functions that are
executed when power flows to the box. Typical box functions
include timers, counters, and math operations.
Entering Elements Control elements are entered in the ladder diagram by
positioning the cursor and selecting the element from a list.
In the following example the cursor has been placed in the
position to the right of I0.2. A coil was selected from a pull-
down list and inserted in this position.
Network 1
Network 2
I0.0 I0.1
I0.2
Q0.0
Cursor
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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.