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what type of memory of S7 CPU315 and if I raise the memory from the cpu, what happen to the plc program
To update the firmware:
- An online update of the firmware is possible with STEP 7 V5.3 or higher , provided there is no safety program on the CPU or there is a safety program on the CPU and Protection Level 2 or 3 has been configured. If Protection Level 1 is configured and there is a safety program on the CPU (SDB99 exists), you require at least STEP7 V5.4 SP3 Hotfix1.
- The module in the station whose firmware is to be updated must be accessible online.
- A MMC (Micro Memory Card) must be available in the module as buffer memory.
- The unpacked files with the current firmware version must be present in the file system of your PG or PC:
A folder must only contain the files of one firmware version.BG_ABL.UPD
CPU_HD.UPD
KOMP_1.UPD