Hello guys,
I have to admit I'm still kind of a layman in this field but I'm trying hard to pick up some knowledge.
I have a PLC FX1N with the aforementioned card that sets a speed of a Delta VFD. I need to change the VFD for another brand and now I'm trying to figure out what kind of changes I'll have to do in the PLC program to get it work.
The manual for the PLC card doesn't mention the capability of modbus protocol, that's why I'm actually confused what I should be looking for.
However, in the PLC program I found some code converting data to ASCII starting with "colon, then something that could be the drive address, then 06 which should be function "write" etc.
Can someone help me how I can understand it (is it Modbus or not) and just outlined if after changing the VSD I'll have to modify the PLC program?
I have to admit I'm still kind of a layman in this field but I'm trying hard to pick up some knowledge.
I have a PLC FX1N with the aforementioned card that sets a speed of a Delta VFD. I need to change the VFD for another brand and now I'm trying to figure out what kind of changes I'll have to do in the PLC program to get it work.
The manual for the PLC card doesn't mention the capability of modbus protocol, that's why I'm actually confused what I should be looking for.
However, in the PLC program I found some code converting data to ASCII starting with "colon, then something that could be the drive address, then 06 which should be function "write" etc.
Can someone help me how I can understand it (is it Modbus or not) and just outlined if after changing the VSD I'll have to modify the PLC program?