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.
b7 b6 b5
M7 M6 M5
M15 M14 M13
M23 M22 M21
M31 M30 M29
M2039 M2038 M2037 M2036
M2047 M2046 M2045 M2044
*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
b4 b3 b2 b1
M4 M3 M2 M1
M12 M11 M10 M9
M20 M19 M18 M17
M28 M27 M26 M25
:
M2035 M2034 M2033
M2043 M2042 M2041
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
When GS580.b8,
Format
b0
GS581.b8,
1, 2
GS582.b8, or
GS583.b8 is ON
M0 2000
H
8320
M8 2001
H
M16 2002
H
8321
M24 2003
H
: :
M2032 20FE
H
8447
M2040 20FF
H
*1
Address specification value
Format3, 4
When GS580.b8,
GS581.b8,
GS582.b8, or
GS583.b8 is OFF
2001
H
2000
H
2003
H
2002
H
:
20FF
H
20FE
H
Format Format
5 6 to 9
2080
H
Same as
2081
H
address
column
*2
:
on left
20FF
H