Hello people,
I have question regarding download of Step 7 program to S7-300 PLC.
Program is placed on memory card (I think 256 KB, but that is not really matter here). We figured out that we need change of some program's parameters, PLC's switch is placed in Run-P mode, parameters in data blocks are changed, and DB's are downloaded to PLC. That worked fine.
However, recently I found out that there is potential problem, memory reset is performed (switch into M-Res position...) and program is loaded from MC card. It seems that all previous changes are lost, and when DBs are downloaded in Run-P mode, those changes are not saved in MC.
My question is how to save changes to MC also, so next time when PLC is reset, changes are in program loaded from MC?
I'm not sure should I use copy RAM to ROM or Save to memory Card.
Does PLC needs to be in STOP mode when performing this operation?
Thank you
I have question regarding download of Step 7 program to S7-300 PLC.
Program is placed on memory card (I think 256 KB, but that is not really matter here). We figured out that we need change of some program's parameters, PLC's switch is placed in Run-P mode, parameters in data blocks are changed, and DB's are downloaded to PLC. That worked fine.
However, recently I found out that there is potential problem, memory reset is performed (switch into M-Res position...) and program is loaded from MC card. It seems that all previous changes are lost, and when DBs are downloaded in Run-P mode, those changes are not saved in MC.
My question is how to save changes to MC also, so next time when PLC is reset, changes are in program loaded from MC?
I'm not sure should I use copy RAM to ROM or Save to memory Card.
Does PLC needs to be in STOP mode when performing this operation?
Thank you