Bit no. Explanation Possiblevalues(binary)Description0001 Automatic startup illegal, parameter modifications, etc. necessary0111 Automatic startup permitted11...8 Permissibility ofmanual startup0000 Manual startup illegal, memory request requested0001 Manual startup illegal, parameter modifications, etc. necessary0111 Manual startup permitted7...0 Last valid inter-vention or settingof the automaticstartup at Pow-erON0000 0000 No startup0000 0011 Restart triggered with mode selector0000 0100 Restart triggered by command via MPI0001 0000 Automatic restart after battery-backed PowerON0001 0011 Restart triggered with mode selector; last PowerON battery-backed0001 0100 Restart triggered by command via MPI; last PowerON battery-backed0010 0000 Automatic restart after battery-backed PowerON (with memory reset bysystem)0010 0011 Restart triggered with mode selector last PowerON not battery-backed0010 0100 Restart triggered by command via MPI last PowerON not battery-backed6.4 Communication Interrupts6.4.1 OB 55 - DP: Status Alarm - Status InterruptA status interrupt OB (OB 55) is only available for DP-V1 capable CPUs.The CPU operating system calls OB 55 if a status interrupt was triggered via the slot of aDP-V1 slave. This might be the case if a component (module) of a DP-V1 slaves changesits operating mode, for example from RUN to STOP. For precise information on eventsthat trigger a status interrupt, refer to the documentation of the DP-V1 slave‘s manufac-turer.The following table describes the start information of the OB 55 with default names of thevariables and its data types:Variable Data type DescriptionOB55_EV_CLASS BYTE Event class and identifiers:11h: incoming eventOB55_STRT_INF BYTE 55h: Status interrupt for DP58h: Status interrupt for PROFINET IODescriptionLocal dataVIPA SPEED7Organization BlocksCommunication Interrupts > OB 55 - DP: Status Alarm - Status InterruptHB00 | OPL_SP7 | Operation list | en | 18-3074
