Siemens Simatic S7 Series System Manual

Special memory (SM) and system symbol names
D.29 SMB1400-SMB1699: EM (expansion module) module-specific data
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
691
D.29
SMB1400-SMB1699: EM (expansion module) module-specific data
The CPU reserves an additional 50 bytes for each expansion module for read-only module-
specific data:
SM addresses
Description
SMB1400 to SMB1449
EM bus Slot 0: Module specific information
SMB1450 to SMB1499 EM bus Slot 1: Module specific information
SMB1500 to SMB1549
EM bus Slot 2: Module specific information
SMB1550 to SMB1599
EM bus Slot 3: Module specific information
SMB1600 to SMB1649
EM bus Slot 4: Module specific information
SMB1650 to SMB1699
EM bus Slot 5: Module specific information

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.