Table of contents
S7-200 SMART
16 System Manual, V2.5, 01/2020, A5E03822230-AI
D Special memory (SM) and system symbol names ................................................................................. 865
D.1 SM (Special Memory) overview ........................................................................................... 865
D.2 SMB0: System status ........................................................................................................... 867
D.3 SMB1: Instruction execution status...................................................................................... 868
D.4 SMB2: Freeport receive character ....................................................................................... 869
D.5 SMB3: Freeport character error ........................................................................................... 870
D.6 SMB4: Interrupt queue overflow, run-time program error, interrupts enabled, freeport
transmitter idle, and value forced ......................................................................................... 870
D.7 SMB5: I/O error status ......................................................................................................... 871
D.8 SMB6-SMB7: CPU ID, error status, and digital I/O points ................................................... 871
D.9 SMB8-SMB19: I/O module ID and errors ............................................................................ 872
D.10 SMW22-SMW26: Scan times .............................................................................................. 873
D.11 SMB28-SMB29: Signal board ID and errors ........................................................................ 873
D.12 SMB30: (Port 0) and SMB130: (Port 1) ............................................................................... 873
D.13 SMB34-SMB35: Time intervals for timed interrupts ............................................................. 874
D.14 SMB36-SMB45 (HSC0), SMB46-SMB55 (HSC1), SMB56-SM65 (HSC2), SMB136-
SMB145 (HSC3), SMB146-SMB155 (HSC4), SMB156-SMB165 (HSC5): high-speed
counters ............................................................................................................................... 875
D.15 SMB66-SMB85 (PTO0/PWM0, PTO1/PWM1), SMB166-SMB169 (PTO0), SMB176-
SMB179 (PTO1), and SMB566-SMB579 (PTO2/PWM2): high-speed outputs ................... 880
D.16 SMB86-SMB94 and SMB186-SMB194: Receive message control ..................................... 883
D.17 SMW98: Expansion I/O bus communication errors ............................................................. 885
D.18 SMW100-SMW114 System alarms ..................................................................................... 886
D.19 SMB130: Freeport control for port 1 (See SMB30) .............................................................. 887
D.20 SMB146-SMB155 (HSC4) and SMB156-SMB165 (HSC5) ................................................. 887
D.21 SMB186-SMB194: Receive message control (See SMB86-SMB94) .................................. 887
D.22 SMB480-SMB515: Data log status ...................................................................................... 887
D.23 SMB600-SMB749: Axis (0, 1, and 2) open loop motion control .......................................... 888
D.24 SMB650-SMB699: Axis 1 open loop motion control (See SMB600-SMB740) .................... 889
D.25 SMB700-SMB749: Axis 2 open loop motion control (See SMB600-SMB740) .................... 889
D.26 SMB1000-SMB1049: CPU hardware/firmware ID ............................................................... 889
D.27 SMB1050-SMB1099: SB (signal board) hardware/firmware ID ........................................... 890
D.28 SMB1100-SMB1399: EM (expansion module) hardware/firmware ID ................................ 890
D.29 SMB1400-SMB1699: EM (expansion module) module-specific data .................................. 893
D.30 SMB1800-SMB1999: PROFINET device status .................................................................. 893
E References ............................................................................................................................................ 895