Current Value History Monitor - Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual

Current value history monitor

The current value history monitor is a function used to monitor the encoder position data history for each axis. Current position
data, home position return data, and Multiple CPU system power supply ON/OFF data (for past 10 times) can be monitored.
Current value history monitor information is always stored, regardless of whether the system is absolute or incremental, and is
retained even when the Multiple CPU system power supply is turned OFF, or when reset. The current value history monitor is
cleared when clearing the built-in memory with the rotary switch. The following items are displayed on the current value
history monitor.
Display item Displayed content
Item Displays current value history items.
• Home position data: Current value when home position return is completed
normally.
• Monitor value: Current real-time current value
• Power supply ON: Current value when servo amplifier initial communication
established
• Power supply OFF: Current value when communication with servo amplifier
disconnected
Date/time Displays the date and time at which current value history was recorded.
Encoder current Displays the motor encoder multi-revolution counter and position within a
value single revolution.
Servo command Displays the positioning command value sent to the servo amplifier.
value
Monitor current Displays the current value managed inside the Motion CPU.
value
Error code Displays the error code if an error relating to current value restoration occurs
when the servo amplifier power supply is turned ON.
*1 History is not updated if a servo amplifier AL.16 error (encoder initial communication error 1) has occurred at an absolute position
system.
*2 "Power supply ON" displays the date and time at which initial communication was established with the servo amplifier, and "Power
supply OFF" displays the date and time at which communication with the servo amplifier was disconnected. Consequently, a single item
of history is recorded even when communication is interrupted or resumed with the SSCNET connect/disconnect function when the
servo amplifier control power supply and Multiple CPU system power supply are ON.
*3 The "Power supply OFF" history is updated at the same time as the "Power supply ON" history when the power supply is subsequently
turned ON (when initial communication established with servo amplifier).
*4 A value close to the feed current value is displayed, however, the monitor current value and feed current value are different, and
therefore it is not abnormal for a different value to appear.
*1
*1*2
*1*2*3
Remarks
Year/month/day hour:minute:second. 1/1000 second
yyyy/MM/dd hh:mm:ss.ssss (1ms units)
Decimal notation
Decimal notation
*4
Decimal notation
Warning (error code: 093CH, 093FH)
6 COMMUNICATION FUNCTIONS
6.7 Positioning Control Monitor Function
6
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