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Browse Questions » SIMATIC TDC, FM458, T400: Fm 458-1 Dp which is Within Halt mode & Analysis informaton says "Stop caused Via memory management"

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SIMATIC TDC, FM458, T400: Fm 458-1 Dp which is Within Halt mode & Analysis informaton says "Stop caused Via memory management"

Hi Experts,
I have FM 458-1 Dp which is in stop mode and diagnostic informaton says "Stop caused by memory management"
i have reset the memory but problem persists.
when i download the prog in FM it goes upto 99% and then it got stuck and message appears "Module is not responding in monitoring time"
attached is the snapshot of FM memory status. can u please help me what is the actual problem?
Either FM 458 is faulty aur i am missing something?
thanks and regards,
Mohsin

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Answers(1)

FM 458-1 DP - Memory Management & Download Issues

Dear Mohsin,

Based on the "Stop caused by memory management" error and the download halting at 99% with "Module is not responding in monitoring time", it strongly suggests a hardware fault within the FM 458-1 DP module. While you've reset the memory, this typically doesn't resolve hardware-related memory controller issues.

Possible Causes:

  • Faulty memory chip on the FM module.
  • Internal communication issue within the FM module.

Recommendations:

  1. Hardware Diagnostics: Run comprehensive hardware diagnostics via Siemens Industry Online Support.
  2. Module Replacement: Given the persistence of the issue after a memory reset and the download failure, replacing the FM 458-1 DP module is highly recommended.
  3. Check Connections: Verify all connections (power, Profibus) are secure.

Please review the attached memory status snapshot with a Siemens expert or through SiePortal for further analysis. It's unlikely a software configuration issue if the problem persists after a reset and download attempt.

Sincerely,
Siemens Self Support

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