Technical data

Table Of Contents
Organization Blocks
System Software for S7-300/400 System and Standard Functions - Volume 1/2
1-22
A5E00709327-01
1.12 Technology Synchronization Interrupt OB (OB 65)
Note
The technology synchronization interrupt OB (OB 65) only applies to Technology
CPUs.
Description
The technology synchronization interrupt provides the option of starting a program
at the same time the technology blocks are updated. the technology
synchronization interrupt OB is started after the technology blocks are updated.
The priority class of the technology synchronization interrupt OB is has a fixed
setting of 25 and cannot be changed.
Note
At the time the technology synchronization interrupt OB is started there are still no
updated instance data for the technology functions available.
Local Data for the Technology Synchronization Interrupt OB
The following table describes the temporary (TEMP) variables of the technology
synchronization interrupt OB 65. The variable names are the default names of
OB 65.
Variable Data Type Description
OB65_EV_CLASS BYTE Event class and IDs:
B#16#11: incoming event, event class 1
OB65_STRT_INF BYTE B#16#6A: Start request for OB 65
OB65_PRIORITY BYTE Priority class: 25 (fixed setting)
OB65_OB_NUMBR BYTE OB number (65)
OB65_RESERVED_1 BYTE Reserved
OB65_RESERVED_2 BYTE Reserved
OB65_RESERVED_3 BOOL Reserved
OB65_FIRST BOOL First use of OB 65 after startup
OB65_MISSED_EXEC BYTE Number of failed starts of OB 65 since last execution of
OB 65
OB65_RESERVED_4 BYTE Reserved
OB65_RESERVED_5 BYTE Reserved
OB65_RESERVED_6 WORD Reserved
OB65_DATE_TIME DATE_AND_TIME Date and time of day at which the OB was called.