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S7-300 Memory Cards -- Operation and maintenance -- Diagnosing errors
Why is the SIMATIC MMC not read in my card reader (third-party device)?
Why is the MMC no longer recognized by SIMATIC devices after it has been formatted in a third-party device?
With MMC (Micro Memory Card) slotted, why does the STOP LED blink on the SIMATIC S7-300 CPU?
What should you do upon display of the error message 33:8580 "MMC defective"
S7-300 CPU 31x -- Operation and maintenance -- Diagnosing errors
With diagnostics-compatible modules how do you evaluate a change of the diagnostics status in the user program of the S7-300?
When the CPU starts up how can you identify a previous stop event and process it in the program (even after an overall reset)?
Which organization blocks do you have to load into the CPU to ensure that the CPU does not go into the "STOP" status when a remote I/O fails?
What should you do upon display of the error message 33:8580 "MMC defective"
With MMC (Micro Memory Card) slotted, why does the STOP LED blink on the SIMATIC S7-300 CPU?
Which organization blocks do you need for error handling in STEP 7 V5.5?
How do you find out the status of the stations of a DP master system or of a PROFINET IO system?
Why are devices not correctly displayed in the topology view of the web server?
Capturing module and diagnostics data of the automation system
CPU switches to STOP when a PG/PC goes online via PROFIBUS
How do you get an overview of the SIMATIC automation system and what solutions are there for undesired operating states?
What do you have to do if the SIMATIC S7-300 CPU no longer goes into RUN mode after adding a CP or FM module?
Why does the EXTF LED light continuously on a CPU 300 (V1.0.0)/CPU 400 (V1.1.0) after occurrence of a diagnostics alarm?
Which information is entered in the diagnostic buffer of the SIMATIC S7 CPU in STEP 7 V5.x?
Memory reset request by the CPU
Why does the "SF DP" LED light on the CPU 315-2 DP (6ES7 315-2AF0x-0AB0; x = 0,1,2) although no DP configuration has been loaded into the CPU?
Why does the CPU remain in STOP after voltage recovery following complete loss of voltage for the entire system?
Why does the LED BF2 light with PROFINET CPUs S7-315/317-2PN/DP V2.3 even though no bus fault can be determined?
Why does my SIMATIC S7-300 CPU go into STOP with error 16#4548 "Stop by I/O administration"?
How can you avoid diagnostics problems when implementing dummy module DM 370?
What should you do upon display of the error message 33:8580 "MMC defective"
Part number:

Instructions:
The error message concerned indicates that the MMC is no longer recognized/accepted by the SIMATIC CPU. This is the case when the SIMATIC IDs have been overwritten, for example through using the MMC in a non-SIMATIC application, or the MMC has been formatted in a third-party device. Unfortunately it is not possible to restore the internal structure of the MMC for renewed use in SIMATIC S7-300 CPUs.

See Entry ID 21829579 for which SIMATIC devices you can use to read from or write to S7-300 MMCs. More information on handling the MMC is available in the manual "S7-300, CPU 31xC and CPU 31x: Installation Instructions" in Entry ID 13008499.


 Entry ID:21832345   Date:2005-07-20 
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