Mitsubishi Electric MELSEC-A/QnA Series - Page 300

App - 7
(3) Using the scaling function (for example in the Q68AD-G) to change a resolution
If the module after replacement (for example, the Q68AD-G) supports the scaling function
*1
, a resolution
can be changed using this function.
(Condition)
(a) Resolution of an A series analog I/O module: 1/8000 (Only one channel is used.)
(b) Q series analog I/O module: Q68AD-G
(Example of sequence program to set the function and read the scaling value)
(Buffer memory areas of the Q68AD-G)
*1 For details of the scaling function, refer to the user’s manual for the module used.
Address
Description Default Read/Write
Hexadecimal Decimal
35
H
53 Scaling enable/disable setting
00FF
H
R/W
36
H
54 CH1 Scaling value 0
R
37
H
55 CH2 Scaling value 0
38
H
56 CH3 Scaling value 0
39
H
57 CH4 Scaling value 0
3A
H
58 CH5 Scaling value 0
3B
H
59 CH6 Scaling value 0
3C
H
60 CH7 Scaling value 0
3D
H
61 CH8 Scaling value 0
3E
H
62 CH1 Scaling lower limit value 0
R/W
3F
H
63 CH1 Scaling upper limit value 0
40
H
64 CH2 Scaling lower limit value 0
41
H
65 CH2 Scaling upper limit value 0
Setting request
condition
TOP H0 K53 K1 K1
Enable the scaling function of
Channel 1.
Set the scaling lower limit
value to "0".
Present value
read condition
FROMP H0 K34 D0 K1
Read the scaling value of
Channel 1 from the buffer memory.
TOP H0 K62 K0 K1
TOP H0 K63 K8000 K1
Set the scaling upper limit
value to "8000".