737
FX3G/
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
30 External Device Communication (Inverter Communication) – FNC270 to FNC274
30.5 FNC274 – IVBWR / Inverter Parameter Block Write
21
FNC160-FNC169
Real Time Clock
Control
22
FNC170-FNC179
External Device
23
FNC180
Alternate
Instructions
24
FNC181-FNC189
Others
25
FNC190-FNC199
Block Data
Operation
26
FNC200-FNC209
Character String
Control
27
FNC210-FNC219
Data
Operation 3
28
FNC220-FNC249
Data
Comparison
29
FNC250-FNC269
Data Table
Operation
30
FNC270-FNC274
Ex-Device
Inverter Comms
Explanation of function and operation
→ For detailed explanation of the instruction, refer to the Data Communication Edition manual.
1. 16-bit operation (IVBWR)
A data table
*1
(parameter numbers and set values) specified in and is written to an inverter
connected to a communication port n whose station number is all at once.
*1. The table below shows the data table format.
: Number of parameters to be written
: Head device number of data table
2. Related devices
→ For the instruction execution complete flag use method, refer to Subsection 6.5.2.
*1. Cleared when the PLC mode switches from STOP to RUN.
*2. Initial value: -1
Cautions
→ For other cautions, refer to the Data Communication Edition manual.
• It is not permitted to use an RS (FNC 80)/RS2 (FNC 87)/FLCRT (FNC300)/FLDEL (FNC301)/
FLWR (FNC302)/FLRD (FNC303)/FLCMD (FNC304)/FLSTRD (FNC305) instruction and an
IVCK (FNC270)/IVDR (FNC271)/IVRD (FNC272)/IVWR (FNC273)/IVBWR (FNC274) instruction for the
same port.
• Two or more inverter communication instructions (FNC270 to FNC274) can be driven for the same port at
the same time.
Device Parameter numbers to be written and set values
1st parameter
Parameter number
+1
Set value
+2
2nd parameter
Parameter number
+3
Set value
...
...
...
+2 -4
“ -1”th parameter
Parameter number
+2 -3
Set value
+2 -2
“ ”th parameter
Parameter number
+2 -1
Set value
Number
Description
Number
Description
ch1 ch2 ch1 ch2
M8029 Instruction execution complete D8063 D8438 Error code of serial communication error
M8063 M8438 Serial communication error D8150 D8155 Response wait time in inverter communication
M8151 M8156
Inverter communicating
*1
D8151 D8156
Step number in inverter communication
*2
M8152 M8157
Inverter communication error
*1
D8152 D8157
Error code of inverter communication
error
*1
M8153 M8158
Inverter communication error
latch
*1
D8153 D8158
Latch of inverter communication error
occurrence step
*2
M8154 M8159
IVBWR instruction error
*1
D8154 D8159
IVBWR instruction error parameter number
*2
S
2
S
3
S
1
FNC274
IVBWR
S
1
S
2
S3
n
Command
input
S
2
S
3
S
3
S
3
S
3
S
3
S
3
S
2
S
2
S
3
S
2
S
3
S
2
S
2
S
3
S
2
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