M Devices - Mitsubishi Electric GOT2000 Series Connection Manual

3.3.4

M devices

The M devices are bit devices into which user data are stored.
All of these devices can be used as a user area.

List of M devices and differences in address specification by data format
The following shows the M devices (virtual devices inside the GOT).
The address specification values different depending on the data format are also given below.
Model
b7 b6
M7 M6
M15 M14
M23 M22
M31 M30
M2039 M2038
M2047 M2046
M7 M6
M15 M14
M23 M22
M31 M30
M2039 M2038
M2047 M2046
*1 For the address specification method for each data format, refer to the following.
• Formats 1, 2
• Formats 3, 4
• Formats 5
• Formats 6, 7
• Formats 8, 9
*2 For reading or writing data in word units, specify the addresses in 16-point units.(Example: M0, M16, M32, and others)
3 - 10
3. MICROCOMPUTER CONNECTION (ETHERNET)
3.3 Device Data Area
Address
b5 b4 b3
M5 M4 M3
M13 M12 M11 M10
M21 M20 M19 M18
M29 M28 M27 M26
:
M2037 M2036 M2035 M2034
M2045 M2044 M2043 M2042
M5 M4 M3
M13 M12 M11 M10
M21 M20 M19 M18
M29 M28 M27 M26
:
M2037 M2036 M2035 M2034
M2045 M2044 M2043 M2042
3.4 Message Formats
: GOT-A900 Series microcomputer connection
: GOT-F900 series microcomputer connection
: Digital Electronics Corporation's memory link method
: 4E frame
: QnA compatible 3E frame
Format
b2 b1 b0
1, 2
M2 M1 M0
8320
M9 M8
M17 M16
8321
M25 M24
:
M2033 M2032
8447
M2041 M2040
M2 M1 M0
M9 M8
M17 M16
M25 M24
M2033 M2032
M2041 M2040
*1
Address specification value
Format 3, 4
When When
GS580.b8, GS580.b8,
Format
GS581.b8, GS581.b8,
GS582.b8, or GS582.b8, or
GS583.b8 is GS583.b8 is
ON OFF
2000 2001
H H
2001 2000
H H
2002 2003
H H
2003 2002
H H
: :
20FE 20FF
H H
20FF 20FE
H H
―
Format
5 6 to 9
2080
H
Same as
2081
H address
column
*2
:
on left
20FF
H
2080
H
Same as
2081
H address
column
*2
:
on left
20FF
H