Siemens Simatic S7 Series System Manual

Communication
8.5 PROFIBUS
S7-200 SMART
382 System Manual, 09/2015, A5E03822230-AC
Note
In the examples above, the CPU 315
-2 DP is the configured DP master. Depending on the
master CPU type, the EM DP01 "Properties" can appear slightly different than those shown
here.
8.5.1.8
Example of V memory and I/O address area
The following figure shows an example of the V memory in the S7-200 SMART CPU and the
I/O address area of an S7-300 PROFIBUS DP master:
In this example, the DP master has defined an I/O configuration consisting of two slots and a
V memory offset of 1000. The example configures the first slot as 32 bytes in and out and
the second slot as 8 bytes in and out. The output and input buffers in the S7-200 SMART
CPU are both 40 bytes (32 + 8). The output data (from the DP master) buffer starts at
V1000; the input data (to the DP master) buffer immediately follows the output buffer and
begins at V1040.

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.