Hi all I need your helps to solve the problem with my Simatic MMC (micro memory card). I am utilizing a Simatic CPU 314C-2DP (with firmware V1.0). According to the informations I read in Siemens's website, this type of CPU must be used with a micro memory card (MMC) in order to be able to save user programme and data. So I bought a MMC of type 6ES7953-8LG11-0AA0. I have formatted this MMC as it is instructed in the Manual of CPU31xC. I plugged this MMC into CPU314C-2DP and tried to connect this CPU with a PC installed Step V5.3 but PC have always informed that it couldn't communicate with PLC. But when I removed the MMC out of of PLC's slot and reset the PLC, it could easily communicate with PC and in the dianostig buffer I saw the message " Illegal memory submodule:replace submodule and reset memory". So, is this MMC not proper for the CPU314C-2DP? In my opinion I don't think this MMC is not permitted for CPU314C because Siemens didn't say that in its manual and catalog. But I haven't found yet any solution for this kind of problem. Please instruct me by your experiences in using CPU314C and MMC. Thanks
↧
