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MELSEC-Q
3 SPECIFICATIONS
3.3 Applications and Assignment of Buffer Memory
3.3.1 Buffer memory list
A buffer memory list is given below.
Address Application
Name
Initial
Value
Read/
Write
( 1)
Initial
Setting
( 2)
Reference
Section
0000
H
(0)
TCP ULP timer value
Set time = set value 500ms
3C
H
(60)
R/W
0001
H
(1)
TCP zero window timer value
Set time = set value 500ms
14
H
(20)
R/W
0002
H
(2)
TCP resend timer value
Set time = set value 500ms
14
H
(20)
R/W
0003
H
(3)
TCP end timer value
Set time = set value 500ms
28
H
(40)
R/W
0004
H
(4)
IP reassembly timer value
Set time = set value 500ms
A
H
(10)
R/W
0005
H
(5)
TCP/UDP/
IP
monitoring
timer
Split reception monitoring timer
value
Set time = set value 500ms
3C
H
(60)
R/W
0006
H
(6)
KeepAlive
1
H
R/W
0007
H
(7)
KeepAlive start timer value
Set time = set value 500ms
4B0
H
(1200)
R/W
0008
H
(8)
KeepAlive interval timer value
Set time = set value 500ms
14
H
(20)
R/W
0009
H
(9)
KeepAlive
KeepAlive resend count
3
H
R/W
000A
H
(10)
Router relay function
0
H
R/W
000B
H
to
000C
H
(11 to 12)
Subnet mask pattern
FFFFFF00
H
R/W
000D
H
to
000E
H
(13 to 14)
Default router IP address
0
H
R/W
000F
H
(15)
Number of routers set
0
H
R/W
0010
H
to
0011
H
(16 to 17)
Subnet
address
0
H
R/W
0012
H
to
0013
H
(18 to 19)
Router
information 1
Router IP
address
0
H
R/W
0014
H
to
002F
H
(20 to 47)
TCP/UDP/
IP setting
Routing
information
Router
information 2 to 8
(Same as router information 1)
Section
7.2
0030
H
(48)
GX
Developer
connection
information
setting
Number of TCP connections for GX
Developer connection
1
H
R/W
Section
7.2
0031
H
to
010F
H
(49 to 271)
Basic
parameter
System area (use prohibited)
(Continued on next page)
1: Indicates whether the address is readable and/or writable from/to a sequence program.
R: Readable W: Writable
2: Indicates whether setting on GX Configurator-MB is enabled or disabled.
: Setting enabled : Setting disabled
