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30 Applied Instructions (External Device Communication)
30.4 IVWR / Inverter Parameter Write
718
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
Cases in which a password reset error occurs in an inverter communication instruction, and the actual
number of times of reset error in such cases.
- When a wrong password is written to Pr297 due to a password input error
When the writing instruction is executed once, a password reset error occurs 3 times.
- When the password cannot be written correctly to Pr297 due to noise, etc.
A password reset error occurs up to 3 times.
b) When registering the password
When registering the password in the D700 Series inverter using an inverter communication
instruction, write the password to Pr297, read Pr297, and then confirm that registration of the
password is completed normally
*4
.
If writing of the password to Pr297 is not completed normally due to noise, etc., the FX PLC
automatically retries writing, and the registered password may be reset by the retry.
5) Some restrictions to applicable devices
S1: The FX
3G, FX3GC, FX3U and FX3UC PLCs only are applicable.
S2: The FX
3U and FX3UC PLCs only are applicable.
*1. The instruction is not provided in the FX
3S, FX3G and FX3GC PLCs.
*2. The FX PLC executes the first communication, and then retries communication twice (3 time in total).
*3. When "display of the number of times of password reset error" is made valid in the D700 Series using
Pr297 and when a password reset error occurs 5 times, the "reading/writing restriction" cannot be
reset even if the right password is input.
For recovery from this status, it is necessary to all-clear all parameters in the D700 Series.
*4. When the value given as a result of reading Pr297 is "0" to "4", registration of the password is
completed normally.
PLC applicable version
The table below shows PLC versions applicable to each inverter.
PLC FREQROL-V500/F500/A500/E500/S500 FREQROL-F700/A700 FREQROL-E700/D700
FX3S Ver.1.00 or later
FX3G Ver.1.10 or later
FX3GC Ver.1.40 or later
FX3U Ver.2.20 or later Ver.2.32 or later
FX3UC Ver.1.00 or later Ver.2.20 or later Ver.2.32 or later