Positioning Data History; Precautions - Mitsubishi Electric MELSEC iQ-R Series User Manual

Positioning data history

• The positioning data history of each axis can be monitored by the engineering tool.
• The positioning data history can monitor only the encoder axis.
• The related positioning data is stored in the history when the following operations are executed.
At homing completion: 1 time
At axis connection/axis disconnection: 20 times
• For the positioning data at the axis disconnection, the data at the final backup is set. When the backup data does not exist
or the backup data is an error, 0 is set for all.
• The positioning data history is stored in PosHist.bin of the root path.

Precautions

• When the axis setting is not existed at the power ON, the positioning data history data of nonexistent axis is deleted.
• The occurrence order and saved order of events may not match in the event recorded in the event history. When the event
history is displayed in the engineering tool, the history can be checked in the event occurrence order by sorting the
occurrence time.
• The history data in the Motion module can record and monitor the event occurrence time in a unit of ns. However, the event
history saved in the CPU module is in a unit of ms (round down 1 ms or less).
• The event which occurs frequently may short the memory life of the event history saving destination. It is recommended
that unnecessary events are filtered.
• To clear the positioning data history, delete the positioning data history file by file transfer function and turn the power OFF
 ON or reset the module.
• When the file version of the positioning data history is different, the warning "Position Data History Update Disabled
Warning" (warning code: 0F03H) occurs and the content of the positioning data history file is cleared. After that, the
absolute position control data for one time is read, and the positioning data history file is written.
• When the drive memory of root path lacks its capacity, the warning, "Position Data History Update Disabled Warning"
(warning code: 0F03H) occurs and the positioning data contents are cleared. After that, the absolute position control data
for one time is read and the positioning data file is written. Also, if the memory extremely lacks its capacity and the file can
not be created, the positioning data history file is not created.
16 RAS FUNCTIONS
488
16.2 History Data