SD Card Mounting Functions

The following functions handle mounting of SD cards.

Name Use
SD_ISREADY Check that the SD card is ready for read/write
SD_MOUNT Mount an SD card
SD_UNMOUNT Unmount an SD card

SD_MOUNTPLCopen motion icon

Mount the SDCard on the PDMM. This will not perform any action, and always return TRUE with a Simulator.

OK := SD_MOUNT();
OK : BOOL TRUE if mounting SDCard is successful

  • Before performing, make sure the SDCard is inserted.


  • It is recommended that SD_MOUNT be used only when motion is not started.

SD_UNMOUNTPLCopen motion icon

Un-mount the SDCard from the PDMM. This will not perform any action, and always return TRUE with a Simulator.

OK := SD_UNMOUNT();
OK : BOOL TRUE if un-mounting SDCard is successful

  • It is recommended that SD_UNMOUNT be used only when motion is not started.

SD_ISREADYPLCopen motion icon

Verify if the SDCard is mounted on the PDMM. This will verify if the SDCard folder is available inside the userdata folder when using a Simulator.

OK := SD_ISREADY();
OK : BOOL TRUE if the SDCard is mounted (PDMM / PCMM)