Siemens Simatic S7 Series System Manual

PLC device configuration
6.1 Configuring the operation of the PLC system
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
147
6.1.17
Creating a reset-to-factory-defaults memory card
You can create a memory card that will return the CPU to a factory default state. You can
use this reset-to-factory-defaults memory card if you ever want to clear the contents of your
CPU. To create a reset-to-factory-defaults memory card, follow these steps:
1. Using a card reader and Windows explorer, delete all contents from a microSDHC card.
2. Create a simple text file with an editor such as Notepad that contains one line with the
string "RESET_TO_FACTORY". (Do not enter the quotation marks.)
3. Save this file to the microSDHC card root level under the file name "S7_JOB.S7S".
4. Label the card and store it in a safe place for future use.

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.