tischer
Member
Hi every body,
last two weeks I was working on understanding what are S7-31x MMCs. In the end I collected following information:
64KB-4MB SIEMENS MMC cards are standard 16MB MMCs with special SIEMENS format. Datasheet at http://www.tischer.cz/HB28D032MM2-RENESAS.pdf.
8MB SIEMENS MMCs are the same but 32MB MMCs.
You can make bit copy of these MMCs by using tools at http://personal.telefonica.terra.es/web/suwe in standard MMC/SD card reader. By using this tools you also copy the special SIEMENS format.
But in case you would like to use non SIEMENS 16MB or 32MB MMC, you cant use it in S7 as every MMC has private CID and CSD register where are stored informacion as OEM/APPLICATION ID, PRODUCT NAME, .... . The example of SIEMENS 64KB MMC is at http://www.tischer.cz/64kb.txt. CID is OTP register and first 14 bytes of CSD are programed only by manufacturer. S7 checks and compares stored info. from CID and CSD.
If you have SIEMENS MMC accidentaly formated in standard MMC/SD card reader/writer (for example as FAT format) you can repair it in this standard MMC/SD reader/writer.
1. read original SIEMENS MMC by S7imgrd (the same size as failed card)
2. write this image to failed MMC by S7imgwr
When I was analyzing MMCs I also find out how is the password stored at the MMC.
If you have any question, email me at [email protected]
last two weeks I was working on understanding what are S7-31x MMCs. In the end I collected following information:
64KB-4MB SIEMENS MMC cards are standard 16MB MMCs with special SIEMENS format. Datasheet at http://www.tischer.cz/HB28D032MM2-RENESAS.pdf.
8MB SIEMENS MMCs are the same but 32MB MMCs.
You can make bit copy of these MMCs by using tools at http://personal.telefonica.terra.es/web/suwe in standard MMC/SD card reader. By using this tools you also copy the special SIEMENS format.
But in case you would like to use non SIEMENS 16MB or 32MB MMC, you cant use it in S7 as every MMC has private CID and CSD register where are stored informacion as OEM/APPLICATION ID, PRODUCT NAME, .... . The example of SIEMENS 64KB MMC is at http://www.tischer.cz/64kb.txt. CID is OTP register and first 14 bytes of CSD are programed only by manufacturer. S7 checks and compares stored info. from CID and CSD.
If you have SIEMENS MMC accidentaly formated in standard MMC/SD card reader/writer (for example as FAT format) you can repair it in this standard MMC/SD reader/writer.
1. read original SIEMENS MMC by S7imgrd (the same size as failed card)
2. write this image to failed MMC by S7imgwr
When I was analyzing MMCs I also find out how is the password stored at the MMC.
If you have any question, email me at [email protected]