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5 DATA USED FOR POSITIONING CONTROL
5.1.7 Types and roles of monitor data
The monitor data area in the buffer memory stores data relating to the operating state
of the positioning system, which are monitored as required while the positioning
system is operating.
The following data are available for monitoring.
•
•
[1] Monitoring the system
Monitoring details
Whether the system is in the test mode or not
History of data that
started an operation
History of all errors
History of all warnings
Number of write accesses
to the flash ROM after the
power is switched ON
System monitoring:
Monitoring of the QD75 configuration and operation history (through the system
Md.1
monitor data
through
Axis operation monitoring:
Monitoring of the current position and speed, and other data related to the
movements of axes (through the axis monitor data
The axis monitor data are refreshed every 1.8 ms. Note that "
Md.22
feed value", "
Feedrate", "
input/output signal" are refreshed every 56.8ms. Also, "
updated when the "M code ON signal [X4, X5, X6, X7]" turns ON.
Monitoring the positioning system operation history
Start information
Start No.
Hour
Start
Minute:second
Error upon starting
Latest pointer No.
Axis in which the error occurred
Axis error No.
Hour
Axis error occurrence
Minute:second
Latest pointer No.
Axis in which the warning occurred
Axis warning No.
Hour
Axis warning
occurrence
Minute:second
Latest pointer No.
Number of write accesses to flash ROM
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Md.19
)
Md.20
Md.28
Axis feedrate" and "
Corresponding item
Md.1
In test mode flag
Md.3
Start information
Md.4
Start No.
Md.5
Start
Md.6
Start
Md.7
Error judgment
Md.8
Start history pointer
Md.9
Axis in which the error occurred
Md.10
Axis error No.
Md.11
Axis error occurrence
Md.12
Axis error occurrence
Md.13
Error history pointer
Md.14
Axis in which the warning occurred
Md.15
Axis warning No.
Md.16
Axis warning occurrence (Hour)
Md.17
Axis warning occurrence (Minute:second)
Md.18
Warning history pointer
Md.19
No. of write accesses to flash ROM
5 - 12
MELSEC-Q
through
Md.48
)
Md.21
Machine
Md.30
External
Md.23
Valid M code", is
(Hour)
(Minute:second)
Hour
Minute:second
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