Mitsubishi Electric RD77MS2 - Page 480

478
12 DATA USED FOR POSITIONING CONTROL
12.7 Monitor Data
[Md.20] Current feed value
The currently commanded address is stored. (Different from the actual motor position during operation)
The current position address is stored.
If "degree" is selected as the unit, the addresses will have a ring structure for values between 0 and 359.99999.
• The home position address is stored when the machine home position return is completed.
• When the current value is changed with the current value changing function, the changed value is stored.
Refresh cycle: Operation cycle
■Reading the monitor value
• Monitoring is carried out with a hexadecimal.
• Buffer memory address
Refer to the following for the buffer memory address in this area.
Page 390 Monitor data
[Md.124] Control mode switching status 0
[Md.125] Servo status3 0000H
[Md.500] Servo status7 0000H
[Md.502] Driver operation alarm number 0000H
[Md.503] Pre-reading data analysis status 0
Item Default value
Actual value
A
B
C
D
A
B
C
D
E
F
G
H
E
R
F
G
H
(High-order buffer memory) (Low-order buffer memory)
Low-order buffer memory
b15 b12 b4 b0b8
EF
G
H
High-order buffer memory
b31 b28 b20 b16b24
A
B
C
D
[Md.20] Current feed value
[Md.21] Machine feed value
[Md.22] Feedrate
R × 10
m
Unit conversion table ([Md.20][Md.21])
m
-1
μm
-5
inch
-5
degree
0
pulse
Unit
Unit conversion table ([Md.22])
m
-2
mm/min
-3
inch/min
-3
*
degree/min
0
pulse/s
Unit
Monitor value
Converted from
hexadecimal to decimal
Decimal integer
value
Unit conversion
Sorting
*: When "[Pr.83] Speed control
10
× multiplier setting for
degree axis" is valid: "-2"