Smw22-Smw26: Scan Times; Smb28-Smb29: Signal Board Id And Errors - Siemens SIMATIC S7 System Manual

Special memory (SM) and system symbol names
D.10 SMW22-SMW26: Scan times
D.10

SMW22-SMW26: Scan times

SMW22, SMW24, and SMW26 contain information on the scan time. You can read the last
scan time, minimum scan time, and maximum scan time (millisecond values).
Table D- 7 SMW22-SMW26 PLC scan times
S7-200 SMART SM address
symbol name
Last_Scan SMW22
Minimum_Scan SMW24
Maximum_Scan SMW26
D.11

SMB28-SMB29: Signal board ID and errors

SMB28-SMB29 byte addresses store the signal board type and error status.
See also SMW100-SMW110 System alarm codes (Page 822)
808
Description
Scan time of the last scan.
Minimum scan time recorded since entering the RUN mode or since resetting these
values from the PLC Information dialog.
Maximum scan time recorded since entering the RUN mode or since resetting
these values from the PLC Information dialog.
System Manual, V2.3, 07/2017, A5E03822230-AF
S7-200 SMART