Special memory (SM) and system symbol names
D.26 SMB1000-SMB1049: CPU hardware/firmware ID
S7-200 SMART
826 System Manual, V2.3, 07/2017, A5E03822230-AF
SMB1000-SMB1049: CPU hardware/firmware ID
This CPU writes the information to special memory after a power-up or warm restart
transition. The SMB1000-SMB1049 section of special memory is read-only.
CPU vendor ID: (always 0x002A)
SMB1002 to SMB1021 CPU order ID (MLFB): ASCII characters, left-justified in field, padded with spaces
CPU serial number: ASCII characters, left-justified in field, padded with spaces
SMW1038 CPU hardware version: Represents the hardware E-stand; range = 0x0001 to 0xFFFD
0x0000, 0xFFFE, and 0xFFFF are reserved values.
SMD1040 CPU firmware version:
• Byte 0: ASCII ‘V’
• Byte 1: Functional version
• Byte 2: Minor change version
• Byte 3: Bug fix version
CPU firmware version counter (range 0x0000 to 0x00FF)
CPU device type: Always 0x0001
SMB1050-SMB1099: SB (signal board) hardware/firmware ID
The CPU writes the signal board information to special memory after a power-up or warm
restart transition. The SMB1050-SMB1099 section of special memory is read-only.
Signal board vendor ID: 0x002A if a Siemens SB is present; 0x0000 if no SB is present
Signal board order ID (MLFB): ASCII characters, left-justified in field, padded with spaces
Signal board serial number: ASCII characters, left-justified in field, padded with spaces
SMW1088 Signal board hardware version: Represents the hardware E-stand; range=0x0001 to 0xFFFD
0x0000, 0xFFFE, and 0xFFFF are reserved values.
SMD1090 Signal board firmware version:
• Byte 0: ASCII ‘V’
• Byte 1: Functional version
• Byte 2: Minor change version
• Byte 3: Bug fix version
Signal board firmware version counter (range 0x0000 to 0x00FF)
Signal board device type: I/O=0x0003, communications=0x0004, all other values reserved
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