Siemens Simatic S7 Series System Manual

Special memory (SM) and system symbol names
D.28 SMB1100-SMB1399: EM (expansion module) hardware/firmware ID
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
689
D.28
SMB1100-SMB1399: EM (expansion module) hardware/firmware ID
Expansion module information is written to special memory after a power-up or warm restart
transition. The SMB1100-SMB1399 section of special memory is read-only.
SM addresses for slot 0
Description
SMW1100 EM bus Slot 0 vendor ID: Set to 0x002A if a Siemens EM is present and 0x0000 if no EM is
present
SMB1102 to SMB1121 EM bus Slot 0 order ID (MLFB): ASCII characters, left-justified in field, padded with spaces
SMB1122 to SMB1137
EM bus slot 0 serial number: ASCII characters, left-justified in field, padded with spaces
SMW1138 EM bus slot 0 hardware version: represents the hardware E-stand; range = 0x0001 to 0xFFFD
(0x0000, 0xFFFE, and 0xFFFF are reserved values)
SMD1140 EM bus slot 0 firmware version: Byte 0 is ASCII ‘V’, byte 1=functional version, byte 2= minor
change version, byte 3=bug fix version (range of bytes 1-3 = 0x00 to 0xFF)
SMW1144
EM bus slot 0 firmware version counter (range 0x0000 to 0x00FF)
SMW1146
Reserved, always 0x0000
SMW1148
EM bus slot 0 device type: I/O=0x0003, communications=0x0004, all other values reserved
SM addresses for slot 1
Description
SMW1150 EM bus slot 1 vendor ID: Set to 0x002A if a Siemens EM is present and 0x0000 if no EM is
present
SMB1152 to SMB1171
EM bus slot 1 order ID (MLFB): ASCII characters, left-justified in field, padded with spaces
SMB1172 to SMB1187
EM bus slot 1: serial number: ASCII characters, left-justified in field, padded with spaces
SMW1188 EM bus slot 1 hardware version: Represents the hardware E-stand; range=0x0001 to 0xFFFD
(0x0000, 0xFFFE, and 0xFFFF are reserved values)
SMD1190 EM bus slot 1 firmware version: Byte 0 is ASCII ‘V’; byte 1=functional version, byte 2=minor
change version, byte 3=bug fix version (range of bytes 1-3 = 0x00 to 0xFF)
SMW1194
EM bus slot 1 firmware version counter (range 0x0000 to 0x00FF)
SMW1196
Reserved, always 0x0000
SMW1198
EM bus slot 1 device type: I/O=0x0003, communications=0x0004, all other values reserved
SM addresses for slot 2
Description
SMW1200 EM bus slot 2 vendor ID: Set to 0x002A if a Siemens EM is present and 0x0000 if no EM is
present
SMB1202 to SMB1221
EM bus slot 2 order ID (MLFB): ASCII characters, left-justified in field, padded with spaces
SMB1222 to SMB1237
EM bus slot 2 serial number: ASCII characters, left-justified in field, padded with spaces
SMW1238 EM bus slot 2 hardware version: Represents the hardware E-stand; range = 0x0001 to
0xFFFD (0x0000, 0xFFFE, and 0xFFFF are reserved values)
SMD1240 EM bus slot 2 firmware version: Byte 0 is ASCII ‘V’; byte 1=functional version, byte 2=minor
change version, byte 3 = bug fix version (range of bytes 1-3=0x00 to 0xFF)
SMW1244
EM bus slot 2 firmware version counter (range 0x0000 to 0x00FF)
SMW1246
Reserved, always 0x0000
SMW1248
EM bus slot 2 device type: I/O=0x0003, communications=0x0004, all other values reserved

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.