&RPPLVVLRQLQJ
S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
9-16 A5E00105492-03
)RUPDWWLQJWKH0LFUR0HPRU\&DUG00&
<RXPXVWIRUPDWWKH00&LQWKHIROORZLQJFDVHV
• Module type of MMC is not a user module.
• MMC has not yet been formatted.
• MMC is defective.
• Content of MMC is invalid.
The content of the MCC was identified as invalid.
• The /RDGXVHUSURJUDP operation was aborted by a power OFF.
• The 3URPPLQJoperation was aborted by a power OFF.
• Error during evaluation of module content during memory reset.
• Error during formatting, or formatting could not be performed.
If one of these errors has occurred, the CPU prompts you for another memory
reset after a memory reset operation has been performed. The card content is
retained until the MMC is formatted, except when the Load user program or
promming operations are interrupted by a power OFF.
The MMC is only formatted if a reason for formatting exists (see above) and not, for
example, when you are prompted for a memory reset after a module replacement.
In this case, a switch to MRES triggers a normal memory reset for which the
module content remains valid..
8VHWKHIROORZLQJVWHSVWRIRUPDW\RXU00&
If the CPU is prompting you for a memory reset (slow flashing of STOP LED),
format the MMC using the following switch inputs:
1. Turn the switch to MRES position and hold it there until illumination of the STOP
LED is steady (about 9 seconds).
2. Release the switch within the next 3 seconds and then turn it to MRES position
again. The STOP-LED now flashes during the formatting.
1RWH
Make sure to perform the steps in the specified time. Otherwise, the MMS will not
be formatted and will instead return to the memory reset prompt state.
To Next Page
Loading...
Need help?
General
