Mitsubishi Electric MELSEC-LD77MS2 User Manual page 297

Reading the monitor value
Monitoring is carried out with a hexadecimal display.
Monitor value
Driver
operation
alarm
Example) When the driver operation alarm is "10H" and the detailed
number is "23H", "1023H" is displayed.
Detailed number
5 - 157
Chapter 5 Data Used for Positioning Control
Buffer memory address
Default
value LD77MS2
LD77MS4
0000H
LD77MS16
59302+100n
n: Axis No.-1