Hi,
Our customer had machine breakdown.
After they replace the new inverter the PLC didn’t download parameter automatically.
I would like to backup all parameters from the defective inverter and restore to the new one (the defective one still possible to acess the parameter).
Is it possible to read & backup all parameter of P74 Inverter by the PLC over Power link and how to do that?
In alternative way….
I saw the manual says P74 can be backup by USB to Modbus cable 8I0XC001.003-1
Does any one know is it just USB to RS485 with RJ45 connector or is there anything special?
Would be great if you can share the pin assignment of the RJ45.
Or is there any other way to backup/Restore P74 parameter please kindly share the method.
Thank you
Hi @Naronglit_Wis ,
I see some information on the ACOPOSinverter P86 User’s manual (pag 98):
on the ACOPOSinverter P74 User’s Manual I don’t see that data, but only the picture below (page 478)
Thanks
Ciao
Valerio
Hi,
the ‘normal’ way using a ACOPOSinverter in a B&R system is to have all inverter parameters inside the PLC.
The PLC will download the parameters during powering up to the inverter afterwards.
the PLC didn’t download parameter automatically
if the setting in the PLC is ‘yes’ as above there must be a root cause (e.g. wrong node number).
Is it possible to read & backup all parameter of P74 Inverter by the PLC over Power link and how to do that?
Yes, in theory, you can read the parameters individually using EplSDORead(). You can find the indexes and sub-indexes in the attached Excel file.
EplSDORead()
However, I don’t think that’s the right approach.
You might want to start by checking how the settings were configured in the project (see above)
and whether you can establish a Powerlink connection with the drive at all !?
acoposinverter_p74_communication_parameters.zip (415.9 KB)
Hi @valerio.manenti
Thanks for the hints.
It looks like just simple standard RS485 cable.
I will try and give you feedback.
Hi @christoph.hilchenbac
We’re not own the source code so cannot make any changes.
I did sked the machine manufacture to change that settings and they refuse it and they confirm they set download parameter as “no”.
Real problem is the new ACPi got error 29209 and 31201 while it try to switch on by PLC (Power link).
Now it’s confusing between I/O wirings and parameter settings.
Their given electrical drawing is 3C method but real machine wiring as 2C.
Hi @valerio.manenti
I come back to update that the pin configuration is correct.
And I can link to ACPi with fdtContainer.
Thanks a lot for sharring.
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