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Programming Manual - Basic & Applied Instruction Edition
30 External Device Communication (Inverter Communication) – FNC270 to FNC274
30.1 FNC270 – IVCK / Inverter Status Check
2. Instruction codes of inverters
The table below shows the inverter instruction codes, , along with their functions.
For instruction codes, refer to the pages in the inverter manual where the computer link function is explained in detail.
3. 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.
PLC applicable version
The table below shows PLC versions applicable to each inverter.
Instruction code of
inverter
Read contents
Corresponding inverter
F700 A700 E700 D700 V500 F500 A500 E500 S500
H7B Operation mode 333333333
H6F
Output frequency
(number of rotations)
333333333
H70 Output current 333333333
H71 Output voltage 33333333–
H72 Special monitor 3333333––
H73 Special monitor selection number 3333333––
H74 Abnormal contents 333333333
H75 Abnormal contents 333333333
H76 Abnormal contents 33333333–
H77 Abnormal contents 33333333–
H79
Inverter status monitor
(extension)
3333–––––
H7A Inverter status monitor 333333333
H6E
Set frequency
(read from EEPROM)
333333333
H6D Set frequency (read from RAM) 333333333
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
PLC FREQROL-V500/F500/A500/E500/S500 FREQROL-F700/A700 FREQROL-E700/D700
FX
3G Ver.1.10 or later
FX
3U Ver.2.20 or later Ver.2.32 or later
FX
3UC Ver.1.00 or later Ver.2.20 or later Ver.2.32 or later
S
2
S
2