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FX
3G
/FX
3U
/FX
3UC
 Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
30 External Device Communication (Inverter Communication) – FNC270 to FNC274
30.1 FNC270 – IVCK / Inverter Status Check
21
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160
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In
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24
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18
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25
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190-
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199
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26
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20
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27
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210-
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21
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28
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269
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30
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FN
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274
Ex-
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Inv
ert
er
 Com
m
s
30.1
FNC270 – IVCK / Inverter Status Check
Outline
This instruction reads the operation status of an inverter to a PLC using the computer link operation function of the
inverter. Applicable inverters vary depending on the version.
This instruction corresponds to the EXTR (K10) instruction in the FX
2N
/FX
2NC
 Series.
→ For detailed explanation of the instruction, refer to the Data Communication Edition manual.
1. Instruction format
2. Set data
*1.
Ch2 is not available in 14-point and 24-point type FX
3G
 PLCs.
3. Applicable devices
S
: This function is supported only in FX
3U
/FX
3UC
 PLCs.
Explanation of function and operation
→ For detailed explanation of the instruction, refer to the Data Communication Edition manual.
1. 16-bit operation (IVCK)
The operation status corresponding to the instruction code
*1
 specified in 
 of an inverter connected to
communication port n whose station number is specified in 
 is read and transferred to 
.
*1.
Refer to the instruction code list shown on the next page.
Refer to the pages in the inverter manual on which the computer link function is explained in detail.
Operand Type
Description
Data Type
Inverter station number (K0 to K31)
16-bit binary
Inverter instruction code (shown on the next page)
Device number storing the read value
n
Channel to be used (K1: ch 1, K2: ch 2)
*1
Oper-
and 
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special 
Unit
Index
Con-
stant
Real 
Number
Charac-
ter String
Pointer
X Y M T C S D….b KnX KnY KnM KnS T C D R U…\G… V
Z Modify K H
E
"…"
P
3 3
S
3
3 3
3 3
S
3
3 3
3
3
3
3 3
S
3
n
3 3
FNC 270
IVCK
Mnemonic
Operation Condition
16-bit Instruction
 9 steps
IVCK
Mnemonic
Operation Condition
Continuous
Operation
32-bit Instruction

  
S
1
  
S
2
  D
  
S
1
  
S
2
  D
  
S
2
  
S
1
   
D
FNC270
IVCK
n
Command
input
S
1 ‚
S
2 ‚
D ‚