5DATA USED FOR POSITIONING CONTROL

5.1.7 Types and roles of monitor data

MELSEC-Q

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.

System monitoring:

Monitoring of the QD75 configuration and operation history (through the system monitor data Md.1 through Md.19 )

Axis operation monitoring:

Monitoring of the current position and speed, and other data related to the movements of axes (through the axis monitor data Md.20 through Md.48 )

The axis monitor data are refreshed every 1.8 ms. Note that " Md.21 Machine feed value", " Md.22 Feedrate", " Md.28 Axis feedrate" and " Md.30 External input/output signal" are refreshed every 56.8ms. Also, " Md.23 Valid M code", is updated when the "M code ON signal [X4, X5, X6, X7]" turns ON.

[1] Monitoring the system

Monitoring the positioning system operation history

Monitoring details

 

 

 

 

 

 

 

Corresponding item

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Whether the system is in the test mode or not

 

 

Md.1

 

In test mode flag

 

 

 

 

 

 

 

 

 

 

 

 

Start information

 

 

Md.3

 

 

Start information

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Start No.

 

 

Md.4

 

Start No.

 

 

 

 

 

 

 

 

 

 

 

History of data that

Start

Hour

 

Md.5

 

 

Start

(Hour)

 

 

 

 

 

 

 

 

 

 

started an operation

 

 

 

 

 

 

 

 

 

 

Minute:second

 

Md.6

 

 

Start

(Minute:second)

 

 

 

 

 

 

 

 

 

Error upon starting

 

 

Md.7

 

 

Error judgment

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Latest pointer No.

 

 

Md.8

 

Start history pointer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Axis in which the error occurred

 

Md.9

 

Axis in which the error occurred

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Axis error No.

 

 

Md.10

Axis error No.

 

 

 

 

 

 

 

 

History of all errors

Axis error occurrence

Hour

 

Md.11

Axis error occurrence

Hour

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Minute:second

 

Md.12

Axis error occurrence

Minute:second

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Latest pointer No.

 

 

Md.13

Error history pointer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Axis in which the warning occurred

 

Md.14

Axis in which the warning occurred

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Axis warning No.

 

 

Md.15

Axis warning No.

 

 

 

 

 

 

 

History of all warnings

Axis warning

Hour

 

Md.16

Axis warning occurrence (Hour)

 

 

 

 

 

 

 

 

 

 

 

occurrence

 

 

 

 

 

 

 

 

 

 

Minute:second

 

Md.17

Axis warning occurrence (Minute:second)

 

 

 

 

 

 

 

 

 

 

 

Latest pointer No.

 

 

Md.18

Warning history pointer

 

 

 

 

 

 

 

 

 

 

 

 

Number of write accesses

 

 

 

 

 

 

 

 

 

 

to the flash ROM after the

Number of write accesses to flash ROM

 

Md.19

No. of write accesses to flash ROM

power is switched ON

 

 

 

 

 

 

 

 

 

 

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Mitsubishi Electronics QD75P, QD75D user manual Types and roles of monitor data, Monitoring the system