Mitsubishi Electronics FX3G Benutzerhandbuch
699
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
30 External Device Communication – FNC270 to FNC276
30.7 FNC276 - MODBUS Read/Write Instruction
21
FNC160
-F
NC1
69
69
R
eal
T
T
ime C
lock
C
ontrol
22
FNC17
0-F
NC
179
179
E
xternal D
evice
23
FNC
180
Alternate
Instructions
24
FN
C181-
FNC18
9
O
thers
25
FNC190
-F
NC1
99
99
Bl
oc
k D
ata
ata
Op
er
er
ation
26
FNC20
0-F
NC209
C
har
ac
te
r S
trin
g
Con
tro
tro
l
27
FNC2
10-
FNC21
10-
FNC21
9
Dat
a
a
Operati
on 3
28
FNC220
-F
NC2
49
49
Da
ta
C
omp
ari
ari
son
29
FNC25
0-F
N
C
269
D
ata T
abl
e
e
Operation
30
FNC2
70-
FNC276
FNC276
Ex
-Dev
ice
8H
Diagnosis
Diagnosis
(Available only
in FX
in FX
3U
and
FX
3UC
PLCs.)
Sub-function: BH
Return Bus Message
Counter
Return Bus Message
Counter
0 (fixed)
PLC Destination Device (head address)
Applicable Devices D•R
Block Length
1 Point
Sub-function: CH
Return Bus
Communication Error
Counter
Return Bus
Communication Error
Counter
0 (fixed)
PLC Destination Device (head address)
Applicable Devices D•R
Block Length
1 Point
Sub-function: DH
Return Bus Exception
Error Counter
Return Bus Exception
Error Counter
0 (fixed)
PLC Destination Device (head address)
Applicable Devices D•R
Block Length
1 Point
Sub-function: EH
Return Slave
Message Counter
Return Slave
Message Counter
0 (fixed)
PLC Destination Device (head address)
Applicable Devices D•R
Block Length
1 Point
Sub-function: FH
Return Slave No
Response Counter
Return Slave No
Response Counter
0 (fixed)
PLC Destination Device (head address)
Applicable Devices D•R
Block Length
1 Point
Sub-function: 10H
Return NAK Counter
Return NAK Counter
0 (fixed)
PLC Destination Device (head address)
Applicable Devices D•R
Block Length
1 Point
Sub-function: 11H
Return Slave Busy
Counter
Return Slave Busy
Counter
0 (fixed)
PLC Destination Device (head address)
Applicable Devices D•R
Block Length
1 Point
Sub-function: 12H
Return Character
Overrun Counter
Return Character
Overrun Counter
0 (fixed)
PLC Destination Device (head address)
Applicable Devices D•R
Block Length
1 Point
BH
Get Comm.
Event Counter
Get Comm.
Event Counter
(Available only
in FX
in FX
3U
and
FX
3UC
PLCs.)
0 (fixed)
0 (fixed)
PLC Destination Device (head address)
: Programming State
+1: Event Counter
Applicable Devices D•R
Block Length
2 Point
CH
Get Comm.
Event Log
(Available only
in FX
Get Comm.
Event Log
(Available only
in FX
3U
and
FX
3UC
PLCs.)
0 (fixed)
0 (fixed)
PLC Destination Device (head address)
: Programming State
+1: Event Counter
+2: Bus Message Counter
+3: Log Length
+4~35: Up to 64 Bytes Event Log
+1: Event Counter
+2: Bus Message Counter
+3: Log Length
+4~35: Up to 64 Bytes Event Log
Applicable Devices D•R
Block Length
4~36 Point
FH
Write Multiple
Coils
Write Multiple
Coils
MODBUS Address:
0000H~FFFFH
Device Count:1~1968
PLC Source Device (head address)
Applicable Devices
D•R•K•H•M•X•Y•S
(D•R•M•X•Y•S can be
indexed.)
(D•R•M•X•Y•S can be
indexed.)
Block Length
(
+ 15)
÷
16
*1
10H
Write Multiple
Registers
Write Multiple
Registers
MODBUS Address:
0000H~FFFFH
0000H~FFFFH
Device Count:1~123
PLC Source Device (head address)
Applicable Devices
D•R•K•H
(D•R can be indexed.)
(D•R can be indexed.)
Block Length
/
S
1
S
2
S
3
S
4
D
D
D
D
D
D
D
D
S
3
S
3