MITSUBISHI ELECTRIC MOTION CONTROLLERS Q172DCPU - Manual (Page 104)

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4 AUXILIARY AND APPLIED FUNCTIONS
(b) Operation mode overview
Operation mode 7-segment LED Operation overview
Mode operated
by RAM
• " . " remains flashing in the first digit of 7-segment LED.
• It operates based on the user programs and parameters stored in the SRAM
built-in Motion CPU module.
• The user programs and parameters for the ROM operation can be written to
the FLASH ROM built-in Motion CPU module.
Mode operated
by ROM
• " . " remains flashing in the first digit and steady " . " display in the second
digit of 7-segment LED.
• Operation starts after the user programs and parameters stored in the FLASH
ROM built-in Motion CPU module are read to the SRAM built-in Motion CPU
module at power supply on or reset of the Multiple CPU system.
If the ROM writing is not executed, even if the user programs and parameters
are changed using the MT Developer during mode operated by ROM,
operation starts with the contents of the FLASH ROM at next power supply on
or reset.
Also, If the ROM writing is not executed, even if the auto tuning data are
reflected on the servo parameter of Motion CPU by operation in the auto-tuning
setting, operation starts with the contents of the FLASH ROM at next power
supply on or reset.
POINT
Do not change the rotary switch setting during operation.
Be sure to turn OFF the power supply before the rotary switch setting change.