Siemens Simatic S7 Series System Manual

Getting started
2.1 Connecting to the CPU
S7-200 SMART
26 System Manual, 09/2015, A5E03822230-AC
Connect the CPU to a power source. The following figure shows the wiring connections for
either a DC or an AC model of the CPU.
DC installation
AC installation
2.1.1
Configuring the CPU for communication
2.1.1.1
Overview
A CPU can communicate with a
STEP
7-Micro/WIN SMART programming de-
vice on an Ethernet netw
ork.
Consider the following when setting up communications between a CPU and a programming
device:
● Configuration/Setup: No hardware configuration is required for a single CPU. If you want
multiple CPU's on the same network, then you must change the default IP addresses to
new, unique IP addresses.
● No Ethernet switch is required for one-to-one communications; an Ethernet switch is
required for more than two devices in a network.

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.