5 Deployment CPU 313-5BF235.1 AssemblyInformation about assembly and cabling:Ä Chap. 3 ‘Assembly andinstallation guidelines’ page 185.2 Start-up behaviorAfter the power supply has been switched on, the CPU changes to the operating modethe operating mode lever shows.When the CPU is delivered it has been reset. After a STOP®RUN transition the CPUswitches to RUN without program.The CPU switches to RUN with the program stored in the battery buffered RAM.n The accumulator/battery is automatically loaded via the integrated power supply andguarantees a buffer for max. 30 days. If this time is exceeded, the battery may betotally discharged. This means that the battery buffered RAM is deleted.n In this state, the CPU executes an overall reset. If a memory card is plugged, pro-gram code and data blocks are transferred from the memory card into the workmemory of the CPU. If no memory card is plugged, the CPU transfers permanentstored "protected" blocks into the work memory if available.n Depending on the position of the operating mode switch, the CPU switches to RUN, ifOB 81 exists, res. remains in STOP. This event is stored in the diagnostic buffer as:"Start overall reset automatically (unbuffered PowerON)".CAUTION!After a power reset and with an empty battery the CPU starts with a BATerror and executes an overall reset. The BAT error can be deleted again,if once during power cycle the time between switching on and off thepower supply is at least 30sec. and the battery is fully loaded. Otherwisewith a short power cycle the BAT error still exists and an overall reset isexecuted.Turn on power supplyDefault boot procedure, asdeliveredBoot procedure with validconfiguration in the CPUBoot procedure withempty batteryVIPA System 300S+ Deployment CPU 313-5BF23Start-up behaviorHB140 | CPU-SC | 313-5BF23 | en | 19-01 49
