Siemens SIMATIC S7 System Manual page 17

D Special memory (SM) and system symbol names ............................................................................. 909
D.1 SM (Special Memory) overview ........................................................................................ 909
D.2 SMB0: System status........................................................................................................ 911
D.3 SMB1: Instruction execution status................................................................................... 912
D.4 SMB2: Freeport receive character ..................................................................................... 913
D.5 SMB3: Freeport character error......................................................................................... 913
D.6 SMB4: Interrupt queue overflow, run-time program error, interrupts enabled, freeport
transmitter idle, and value forced ..................................................................................... 913
D.7 SMB5: I/O error status ...................................................................................................... 914
D.8 SMB6-SMB7: CPU ID, error status, and digital I/O points .................................................... 915
D.9 SMB8-SMB19: I/O module ID and errors ............................................................................ 915
D.10 SMW22-SMW26: Scan times ............................................................................................ 916
D.11 SMB28-SMB29: Signal board ID and errors........................................................................ 917
D.12 SMB30: (Port 0) and SMB130: (Port 1).............................................................................. 917
D.13 SMB34-SMB35: Time intervals for timed interrupts ........................................................... 918
D.14 SMB36-SMB45 (HSC0), SMB46-SMB55 (HSC1), SMB56-SM65 (HSC2), SMB136-SMB145
(HSC3), SMB146-SMB155 (HSC4), SMB156-SMB165 (HSC5): high-speed counters ............ 918
D.15 SMB66-SMB85 (PTO0/PWM0, PTO1/PWM1), SMB166-SMB169 (PTO0), SMB176-SMB179
(PTO1), and SMB566-SMB579 (PTO2/PWM2): high-speed outputs..................................... 923
D.16 SMB86-SMB94 and SMB186-SMB194: Receive message control ........................................ 927
D.17 SMW98: Expansion I/O bus communication errors ............................................................ 929
D.18 SMW100-SMW114 System alarms .................................................................................... 930
D.19 SMB130: Freeport control for port 1 (See SMB30)............................................................. 931
D.20 SMB146-SMB155 (HSC4) and SMB156-SMB165 (HSC5) .................................................... 931
D.21 SMB186-SMB194: Receive message control (See SMB86-SMB94)...................................... 931
D.22 SMB480-SMB515: Data log status .................................................................................... 931
D.23 SMB600-SMB749: Axis (0, 1, and 2) open loop motion control ......................................... 932
D.24 SMB650-SMB699: Axis 1 open loop motion control (See SMB600-SMB740) ...................... 933
D.25 SMB700-SMB749: Axis 2 open loop motion control (See SMB600-SMB740) ...................... 933
D.26 SMB800-SMB848: Axes group open loop motion control .................................................. 933
D.27 SMB1000-SMB1049: CPU hardware/firmware ID ............................................................... 934
D.28 SMB1050-SMB1099: SB (signal board) hardware/firmware ID............................................ 935
D.29 SMB1100-SMB1399: EM (expansion module) hardware/firmware ID ................................. 935
D.30 SMB1400-SMB1699: EM (expansion module) module-specific data................................... 938
D.31 SMB1800-SMB1939: PROFINET device status.................................................................... 938
D.32 SMB1940-SMB1946: Web server status ............................................................................ 939
S7-200 SMART
System Manual, V2.7, 08/2022, A5E03822230-AK
Table of contents
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