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30 Applied Instructions (External Device Communication)
30.2 IVDR / Inverter Drive
712
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
Function and operation explanation
→ For detailed explanation of the instruction, refer to the Data Communication Edition manual.
1. 16-bit operation (IVDR)
The control value specified in the device specified by is written to the instruction code
*1
in the device
specified by of an inverter connected to a communication port n whose station number is specified in the
device specified by .
*1. Refer to the instruction code list.
Refer to the pages in the inverter manual on which the computer link function is explained in detail.
2. Instruction codes of inverters
The table below shows the inverter instruction codes specified in along with their functions.
For instruction codes, refer to the pages in the inverter manual where the computer link function is explained
in detail.
*1. The instruction code "HFD (inverter reset)" does not request a response from the inverter.
Accordingly, even if inverter reset is executed to a station number at which an inverter is not
connected, error does not occur.
It takes about 2.2 seconds to complete execution of inverter reset.
*2. When resetting the inverter, please specify H9696 as .
Do not use H9966.
*3. Please write "0" to instruction code HFF (Link parameter expansion setting) just before the IVDR
instruction when writing frequency.
When "0" is not written, writing of the frequency may not be executed normally.
3. Related devices
→ For the instruction execution complete flag use method, refer to Section 1.3.4.
*1. Cleared when PLC power supply is turned from OFF to ON.
*2. Cleared when the PLC mode switches from STOP to RUN.
*3. Initial value: -1
Hexadecimal instruction
code of inverter
specified in
Written contents
Corresponding inverter
F700 A700 E700 D700 V500 F500 A500 E500 S500
HFB Operation mode 333333333
HF3 Special monitor selection number 3333333 --
HF9 Operation command (extension) 3333 -----
HFA Operation command 333333333
HEE Set frequency (written to EEPROM) 3333
3
*3
3333
HED Set frequency (written to RAM) 3333
3
*3
3333
HFD
*1
Inverter reset
*2
333333333
HF4 Abnormal contents all clear 3333 - 3333
HFC Parameter all clear 333333333
HFC User clear -----33 --
HFF Link parameter extended setting 333333333
Number
Description
Number
Description
ch1 ch2 ch1 ch2
M8029 Instruction execution complete D8063 D8438
Error code of serial communication error
*1
M8063 M8438
Serial communication error
*1
D8150 D8155
Response wait time in inverter communication
*1
M8151 M8156 Inverter communicating D8151 D8156
Step number in inverter communication
*3
M8152 M8157
Inverter communication error
*2
D8152 D8157
Error code of inverter communication error
*2
M8153 M8158
Inverter communication error latch
*2
D8153 D8158
Latch of inverter communication error occurrence
step
*2*3
M8154 M8159
IVBWR instruction error
*2
D8154 D8159
IVBWR instruction error parameter number
*2*3
IVDR
EN ENO
s1
s2
s3
n
Command
input
Inverter station number
Inverter instruction code
Set value to be written to the inverter parameter
or device storing the data to be set.
Channel to be used