Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual page 358

• If the system is unable to recognize the installation target files after turning the Multiple CPU system power
supply ON, the dot matrix LED will not display "INC  SDC", and installation with the SD memory card will
not start.
• If an error is detected after starting installation, and it is not possible to complete the installation, the dot
matrix LED will display "ER0(SD memory card access error)", "ER1(Install file error)", or "ER2(Built-in ROM
access error)". Perform the installation again after removing the error.
• The SD memory card forced stop function cannot be used during installation with a SD memory card. Do
not remove the SD memory card during installation.
8 MOTION CPU MEMORY STRUCTURE
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8.4 Installing the Operating System Software