5 - 95 
MELSEC-Q
5   DATA USED FOR POSITIONING CONTROL 
 
Storage buffer  
memory address 
 
 
 
 
 
Reading the monitor value 
Default 
value 
Axis 1  Axis 2  Axis 3 Axis 4
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
0000H 
812 
813 
912 
913 
1012
1013
1112
1113
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Monitoring is carried out with a hexadecimal. 
 
 
A B C D
A
B
C
D
E F
G
H
E
R
F
G
H
 
 
 
 
 
b15 b12 b4 b0b8
EF
G
H
 
b31 b28 b20 b16b24
ABCD
 
 
 
 
 
Monitor
value
Low-order buffer memory   Example) 812
High-order buffer memory   Example) 813
Sorting
Decimal integer 
value
Converted from 
hexadecimal to decimal
n
-2 mm/min
-3
inch/min
-3
degree/min
0
pulse/s
 
Unit
Unit conversion table
Unit conversion
Actual value
(High-order buffer memory) (Low-order buffer memory)
 R     10
n
Unit conversion table
)
)
Md.29
Axis feedrate
Md.28
)
)
Md.28
Speed-position switching
control positioning amount
Md.29
-1
-5
inch
-5
degree
0
pulse
 
n
Unit
    m
 
0000
H 
814 
815 
914 
915 
1014
1015
1114
1115
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Monitoring is carried out with a hexadecimal. 
0000000000000000
b15 b0b4b8b12
 
 
Monitor 
value
Not used
Stored items
Default 
value
0
0
0
0
0
0
0
0
0
Meaning
0: OFF
1: ON
0
b0
b1
b2
b3
b4
b5
b6
b7
b8
000
Buffer 
memory
Lower limit signal
 Upper limit signal
Drive unit READY signal
Stop signal
External command signal
Zero signal
Near-point dog signal
Deviation counter clear signal
Not used
 
0000
H 816 916 1016 1116