M Devices - Mitsubishi Electric GOT1000 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
M2047 M2046 M2045
*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
M4 M3 M2
M12 M11 M10
M20 M19 M18
M28 M27 M26
:
M2036 M2035 M2034
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
b1 b0
1, 2
M1 M0
8320
M9 M8
M17 M16
8321
M25 M24
:
M2033 M2032
8447
M2041 M2040
*1
Address specification value
Format Format Format
3, 4 5 6 to 9
2000
H
2080
H
2001
H
Same as
2002
H
2081
address
H
2003
H
column on
: :
left
20FE
H
20FF
H
20FF
H
*2