Siemens SIMATIC S7 System Manual page 15

D Special memory (SM) and system symbol names................................................................................ 799
D.1 SM (Special Memory) overview ............................................................................................ 799
D.2 SMB0: System status............................................................................................................ 802
D.3 SMB1: Instruction execution status ...................................................................................... 803
D.4 SMB2: Freeport receive character ........................................................................................ 804
D.5 SMB3: Freeport character error ............................................................................................ 804
D.6 SMB4: Interrupt queue overflow, run-time program error, interrupts enabled, freeport
transmitter idle, and value forced .......................................................................................... 805
D.7 SMB5: I/O error status .......................................................................................................... 805
D.8 SMB6-SMB7: CPU ID, error status, and digital I/O points.................................................... 806
D.9 SMB8-SMB19: I/O module ID and errors ............................................................................. 807
D.10 SMW22-SMW26: Scan times ............................................................................................... 808
D.11 SMB28-SMB29: Signal board ID and errors ......................................................................... 808
D.12 SMB30: (Port 0) and SMB130: (Port 1) ................................................................................ 809
D.13 SMB34-SMB35: Time intervals for timed interrupts ............................................................. 809
D.14 SMB36-SMB45 (HSC0), SMB46-SMB55 (HSC1), SMB56-SM65 (HSC2), SMB136-
SMB145 (HSC3), SMB146-SMB155 (HSC4), SMB156-SMB165 (HSC5): high-speed
counters ................................................................................................................................ 810
D.15 SMB66-SMB85 (PTO0/PWM0, PTO1/PWM1), SMB166-SMB169 (PTO0), SMB176-
SMB179 (PTO1), and SMB566-SMB579 (PTO2/PWM2): high-speed outputs .................... 816
D.16 SMB86-SMB94 and SMB186-SMB194: Receive message control ..................................... 819
D.17 SMW98: Expansion I/O bus communication errors .............................................................. 821
D.18 SMW100-SMW114 System alarms ...................................................................................... 822
D.19 SMB130: Freeport control for port 1 (See SMB30) .............................................................. 823
D.20 SMB146-SMB155 (HSC4) and SMB156-SMB165 (HSC5) .................................................. 823
D.21 SMB186-SMB194: Receive message control (See SMB86-SMB94) ................................... 823
D.22 SMB480-SMB515: Data log status ....................................................................................... 823
D.23 SMB600-SMB749: Axis (0, 1, and 2) open loop motion control ........................................... 824
D.24 SMB650-SMB699: Axis 1 open loop motion control (See SMB600-SMB740) ..................... 825
D.25 SMB700-SMB749: Axis 2 open loop motion control (See SMB600-SMB740) ..................... 825
D.26 SMB1000-SMB1049: CPU hardware/firmware ID ................................................................ 826
D.27 SMB1050-SMB1099: SB (signal board) hardware/firmware ID ........................................... 826
D.28 SMB1100-SMB1399: EM (expansion module) hardware/firmware ID ................................. 827
D.29 SMB1400-SMB1699: EM (expansion module) module-specific data ................................... 830
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
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