Siemens SIMATIC S7 - Page 829

Special memory (SM) and system symbol names
D.28 SMB1100-SMB1399: EM (expansion module) hardware/firmware ID
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
829
SM addresses for slot 4
Description
SMW1300
EM bus slot 4 vendor ID: 0x002A if a Siemens EM is present; 0x0000 if no EM is present
SMB1302 to SMB1321 EM bus slot 4 order ID (MLFB): ASCII characters, left-justified in field, padded with spaces
SMB1322 to SMB1327
EM bus slot 4 serial number: ASCII characters, left-justified in field, padded with spaces
SMW1338 EM bus slot 4 hardware version: Represents the hardware E-stand; range = 0x0001 to
0xFFFD
0x0000, 0xFFFE, and 0xFFFF are reserved values.
SMD1340 EM bus slot 4 firmware version:
• Byte 0: ASCII ‘V’
• Byte 1: Functional version
• Byte 2: Minor change version
• Byte 3: Bug fix version
SMW1344
EM bus slot 4 firmware version counter (range 0x0000 to 0x00FF)
SMW1346
Reserved, always 0x0000
SMW1348
EM bus slot 4 device type: I/O=0x0003, communications=0x0004, all other values reserved
SM addresses for slot 5
Description
SMW1350
EM bus slot 5 vendor ID: 0x002A if a Siemens EM is present; 0x0000 if no EM is present
SMB1352 to SMB1371
EM bus slot 5 order ID (MLFB): ASCII characters, left-justified in field, padded with spaces
SMB1372 to SMB1387
EM bus slot 5 serial number: ASCII characters, left-justified in field, padded with spaces
SMW1388 EM bus slot 5 hardware version: Represents the hardware E-stand; range = 0x0001 to
0xFFFD
0x0000, 0xFFFE, and 0xFFFF are reserved values.
SMD1390 EM bus slot 5 firmware version:
• Byte 0: ASCII ‘V’
• Byte 1: Functional version
• Byte 2: Minor change version
• Byte 3: Bug fix version
SMW1394
EM bus slot 5 firmware version counter (range 0x0000 to 0x00FF)
SMW1396
Reserved, always 0x0000
SMW1398
EM bus slot 5 device type: I/O=0x0003, communications=0x0004, all other values reserved