Mitsubishi Electric MELSEC iQ-R Series User Manual page 326

■Latest backup data
The latest backup data outputs the following data saved in the fixed cycle to the buffer memory.
• Feed current value
• Servo command value
• Encoder position within one revolution
• Encoder multiple revolution counter
• Time 1 (Year: month) data
• Time 2 (Day: hour) data
• Time 3 (Minute: second) data
• Latest backup data pointer
*1 The value equal to the multiplied inverse number of the electronic gear ratio of the servo amplifier (the command unit) is displayed.
The latest backup data starts outputting the data after the power on.
After the home position is established in the absolute system, the data becomes valid and outputs the current value.
■Backup data at the power disconnection
• The detail of the latest backup data right before the power disconnection is output to the buffer memory.
• The backup data at the power disconnection starts being output after the power on.
• The detail of the latest backup data right before the power disconnection used in the absolute system setting is output,
regardless of the setting of the absolute system or incremental system.
• If the data has never been used in the absolute system in the incremental system setting, "0" is output in all storage items.
■Backup data at the power on
• After the power on, the detail of the data which restored the current value is output to the buffer memory.
• The backup data at the power on starts being output after the power on.
• If the current value cannot be restored in the absolute system, "0" is set to the feed current value, encoder position within
one revolution, and encoder multiple revolution counter, and the feedback value from the servo amplifier is set to the servo
command value. The warning "Home position return data incorrect" (warning code: 0D3CH) is set in the error/warning code
at current value restoration.
• When the incremental system is set, the detail of the backup data at the power on used in the absolute system setting is
output. If the data has never been used in the absolute system, "0" is output in all storage items.
■Home position return data
The following data saved at home position return completion to the buffer memory.
• Feed current value at home position return completion
• Servo command value at home position return completion
• Encoder position within one revolution of absolute position reference point data
• Encoder multiple revolution counter of absolute position reference point data
• Time 1 (Year: month) data
• Time 2 (Day: hour) data
• Time 3 (Minute: second) data
*1 The value equal to the multiplied inverse number of the electronic gear ratio of the servo amplifier (the command unit) is displayed.
The data becomes valid only when the absolute system is set.
If the data has never been used in the absolute system in the incremental system setting, "0" is output in all storage items.
9 COMMON FUNCTIONS
324
9.5 History Monitor Function
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