How to transfer program from PC and the ram?

Hello all of you dears ,

please i need answer for my question urgently , because i did a mistake but it's not on purpose .

my question is i have automate step 5 115U cpu 942 and i have wih it the ram 6es5 375-old11 . the problem is i did overall reset  then i remove the battery .so, i lost the program in the ram .

fortunately, i had program on m PC and i transfer it o step5 but the problem i need to transfer it at the ram how could i do it ? please could you give step by step ?

Best regards.

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Split from s5 installation.

Hello,

you should do the follow:

• put the batteries into the PLC - the lamp should not lit
• put the RAM-module into the PLC
• download the PLC-program with your software

Then should it work.

The program is saved at the "working" RAM of the PLC and the memory-module (could be a RAM, EPROM, EEPROM)

Please look at this S5-115U manual.
Look at page 49 ff. there is a description how it  work the S5-115U

Hope this is helpful

regards
CaOd

Dear Caod ,

thank you very much for your collaboration with me .

so i did the three first step that are :

• put the batteries into the PLC - the lamp should not lit
• put the RAM-module into the PLC
• download the PLC-program with your software

so, the paragraphe below did you want that i take look .

Transferring the Program to a Memory Submodule

To program a memory submodule you require a programmer with the S5-DOS "EPROM/EEPROM" package. You must take account of the following when transferring your STEP 5 control program to a memory submodule for plugging into the submdodule receptacle of the CPU: • Use only EPROM/EEPROM submodules; RAM submodules are only suitable for CPUs 941/942 as an expansion to the internal program memory. • Note the following special features of the CPUs when using memory submodules 375-1LA61 and 375-1LA71: - EPROM 375-1LA61 (64 Kbytes) for CPU 943 and for CPU 944: Only 48 Kbytes of the 64-Kbyte memory capacity can be used in both CPU 943 and 944. When programming these memory submodules, note that the absolute address BFFD must not be exceeded! - EPROM 375-1LA71 (128 Kbytes) for CPU 944: An EPROM 375-1LA71, that can only be used in the CPU 944, must only be programmed to the absolute (word) address BFFD. The reason: The capacity of the internal program memory of the CPU 944 is limited to 96 Kbytes. Insert the memory submodule in the submodule receptacle of your programmer and program it with the S5-DOS "EPROM/EEPROM" PACKAGE. The programmer manual contains a detailed description of this package. After programming the memory submodule, insert it in the submodule receptacle of the CPU while the PLC is switched off. Switch on the power supply of the CPU.