3 - 14
3.5 Applications and Assignment of Buffer Memory
3.5.1 Buffer memory list
3
SPECIFICATIONS
 * 1  Indicates whether the reading (Read)/writing (Write) from the sequence program is enabled or 
disabled.
R: Readable           W: Writable
 * 2  Indicates whether setting on GX Configurator-MB is enabled or disabled.
: Setting enabled       : Setting disabled
(Continued on next page)
Table3.4 Buffer memory list (Continued)
Address Application Name
Initial 
value
Read/
Write
(*1)
Initial 
setting
(*2)
Reference
000D
H
(13)
Setting area
CPU response monitoring timer value
 Set time = set value   500ms
A
H
R/W
Section 
7.3.6
000E
H
(14)
Access target (when mounted to 
MELSECNET/H remote I/O station)
0
H
R/W
Section 
7.3.5
000F
H
(15)
Allocated error status area 0
H
R/W
Section 
7.3.4
0010
H
 to 01FF
H
(16 to 511)
System area (use prohibited) - - - -
0200
H
 to 0201
H
(512 to 513)
Automatic 
communication 
parameter
CH1 Automatic 
communication 
parameter 1
Setting parameter existence 0
H
R/W
Section 7.2
0202
H
(514)
Target station No. 1
H
R/W
0203
H
(515)
Request interval timer value
 Set time = set value   10ms
0
H
R/W
0204
H
(516)
Response monitoring timer value/Broadcast 
delay value
 Set time = set value   10ms
0
H
R/W
0205
H
(517)
Type specification of the target MODBUS  
device
0000
H
R/W
0206
H
(518)
Read 
setting
Head buffer memory address 0000
H
R/W
0207
H
(519)
Target MODBUS device 
head number
0
H
R/W
0208
H
(520)
Access points 0
H
R/W
0209
H
(521)
Write 
setting
Head buffer memory address 0000
H
R/W
020A
H
(522)
Target MODBUS device 
head number
0
H
R/W
020B
H
(523)
Access points 0
H
R/W
R
R
R