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MELSEC-Q
7 PARAMETER SETTING
(1) Device codes
(a) Set the device codes for the programmable controller CPU devices and
QJ71MT91 buffer memory area assigned to the MODBUS
R
devices.
(b) The device codes have different setting ranges depending on the
MODBUS
R
devices.
Refer to the following table for the device code setting ranges.
Assignable MODBUS
R
Device
Classification Device
Name
Device
Symbol
Device
Code(*5)
C
oil
Input
Input
regi
st
er
Hol
di
ng r
egi
st
er
E
xt
ended f
ile
regi
st
er
Special relay
SM(*3)
0091
H
Internal system device
Special register
SD(*3)
00A9
H
Input X(*3)
009C
H
Output Y(*3)
009D
H
Internal relay
M(*3)
0090
H
Latch relay
L
0092
H
Annunciator F
0093
H
Edge relay
V
0094
H
Link relay
B(*3)(*4)
00A0
H
Data register
D(*3)(*6)
00A8
H
Link register
W(*3)(*4)
(*6)
00B4
H
Coil TC
00C0
H
Contact TS
00C1
H
Timer
Current value
TN
00C2
H
Coil SC
00C6
H
Contact SS
00C7
H
Retentive
timer
Current value
SN
00C8
H
Coil CC
00C3
H
Contact CS
00C4
H
Counter
Current value
CN
00C5
H
Link special relay
SB(*3)
00A1
H
Link special register
SW(*3)
00B5
H
Internal user device
Step relay
S
0098
H
Direct input
DX
00A2
H
Direct device
Direct output
DY
00A3
H
Index register
Index register
Z
00CC
H
R 00AF
H
File register
File register
ZR(*1) 00B0
H
QJ71MT91 buffer memory
(*2)(*3)
User free area
F000
H
*1: The device assigned to the extended file register is fixed to the file register (ZR).
Refer to Section 7.4.4 for the extended file register.
*2: Refer to Section 7.4.5 for device assignment to the QJ71MT91 buffer memory.
*3: Only this device is supported when the QJ71MT91 is mounted on a MELSECNET/H remote I/O
station. An error will occur if an access request is received from the MODBUS
R
/TCP master with
any other device assigned.
*4: Corresponds to LB and LW on a MELSECNET/H remote I/O station.