Mitsubishi Electric MELSEC-L LD75P User Manual page 196

(2) [Md.21] Machine feed value
Item
The address of the current position according to the machine coordinates will be stored. (Different from the actual motor position
during operation)
Note that the current value changing function will not change the machine feed value.
Under the speed control mode, the machine feed value is constantly updated always, irrespective of the parameter setting.
Storage details
The value will not be cleared to "0" at the beginning of fixed-feed control.
Even if "degree" is selected as the unit, the addresses will not have a ring structure for values between 0 and 359.99999 degrees.
• Machine coordinates: Characteristic coordinates determined with machine
• Update timing: 0.9ms
■Monitoring is carried out with a hexadecimal display.
(High-order buffer memory) (Low-order buffer memory)
Reading the monitor
value
Default value 0000H
Axis 1: 802, 803
Storage buffer memory Axis 2: 902, 903
address Axis 3: 1002, 1003
Axis 4: 1102, 1103
194
Monitor
E F G
value
A B C
Sorting
A B C D E F
Converted from
hexadecimal to decimal
Decimal integer
R
value
Unit conversion
Actual value
Md.20 Current feed value
Machine feed value
Md.21
Md.22 Feedrate
Description
Low-order buffer memory Example) 800
b15 b12
H
E
High-order buffer memory Example) 801
b31 b28
D
A
G H
n
R 10
b8 b4 b0
F G H
b24 b20 b16
B C D
Unit conversion table
)
Md.20 Md.21
n
Unit
m
-1
inch
-5
degree
-5
pulse
0
Unit conversion table
)
Md.22
n
Unit
-2
mm/min
-3
inch/min
-3
degree/min
0
pulse/s