PLC concepts
5.1 Execution of the user program
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
103
Update OBs
execute if a DPV1 or PNIO slave triggers an update interrupt.
For detailed information on events that trigger an update interrupt, refer to the manufacturer's
documentation for the DPV1 or PNIO slave.
Table 5- 12 Start information for update OB
Profile OBs execute if a DPV1 or PNIO slave triggers a profile-specific interrupt.
For detailed information on events that trigger a profile interrupt, refer to the manufacturer's
documentation for the DPV1 or PNIO slave.
Table 5- 13 Start information for profile OB
LADDR HW_IO Hardware identifier
MC-Servo and MC-Interpolator OB
STEP 7 creates the read-only MC-Servo and MC-Interpolator OBs automatically when you
create a motion technology object and set the drive interface to be "Analog drive connection"
or "PROFIDrive". You do not need to edit any OB properties or create this OB directly. The
CPU uses these OBs for closed loop control. Refer to the STEP 7 Information System for
further details.
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