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CHAPTER 3 SPECIFICATIONS
3
3.4  Buffer
 Memor
y List
  
3.4
Buffer Memory List
The buffer memory is used for exchanging data between the Ethernet adapter module and a master/local module or an 
external device.
The contents of the buffer memory return to the default state (initial values) when the system is powered off or reset.
Address
(Decimal 
(Hexadecimal))
Name
Initial 
value
Read/Write
Refer to
0
(0
H
)
Module operation area
Module LED information
0
Read
1
(1
H
)
Station No. LED information
Read
2
(2
H
)
Ethernet port LED information
3 to 15
(3
H
 to F
H
)
System area
16 to 18
(10
H
 to 12
H
)
Own station information
(PORT1 and PORT2)
Own station MAC address
Read
19
(13
H
)
System area
20 to 21
(14
H
 to 15
H
)
Own station IP address
0
Read
22 to 25
(16
H
 to 19
H
)
System area
26 to 28
(1A
H
 to 1C
H
)
Own station information
(Ethernet port)
Own station MAC address
Read
29
(1D
H
)
System area
30 to 31
(1E
H
 to 1F
H
)
Own station IP address
0
Read
32 to 33
(20
H
 to 21
H
)
Own station subnet mask
0
34 to 35
(22
H
 to 23
H
)
System area
36
(24
H
)
Own station information
(Parameters)
Mode
0
Read
37
(25
H
)
Network No.
0
Read
38
(26
H
)
Station No.
0
Read
39 to 47
(27
H
 to 2F
H
)
System area
48
(30
H
)
Function check area
*1
0001
H
Read
49 to 767
(31
H
 to 2FF
H
)
System area
768
(300
H
)
Ethernet port operation area
(area for initial processing)
Initial processing error code
0
Read