Which communication port/protocol for VFD
- Tarja
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20 Feb 2022 12:10 #235380
by Tarja
Which communication port/protocol for VFD was created by Tarja
Hi, I could get a VFD, where I can chose the communication protocol.
What would be the best for linuxcnc?
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Tarja
What would be the best for linuxcnc?
- CANopen/motion RJ45
- Ethernet TCP/IP (Modbus TCP, Ethernet IP)
- ProfiNet (Link Layer Discovery Protocol)
- CANopen SUB9 (canopen, canmotion)
- Ethercat
- Profibus
- DeviceNET
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Tarja
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- Aciera
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23 Feb 2022 20:07 - 23 Feb 2022 20:27 #235645
by Aciera
Replied by Aciera on topic Which communication port/protocol for VFD
Actually most common is analog and step/direction.
From your list I'd say Ethercat might work.
Modbus is also used but using the serial port not the TCP flavour.
Mind you it would also depend on what else you need to interface to (eg the servo drives).
From your list I'd say Ethercat might work.
Modbus is also used but using the serial port not the TCP flavour.
Mind you it would also depend on what else you need to interface to (eg the servo drives).
Last edit: 23 Feb 2022 20:27 by Aciera.
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- Tarja
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25 Feb 2022 17:34 #235805
by Tarja
Replied by Tarja on topic Which communication port/protocol for VFD
So if I understood right modbus only works with serial bus but not on ethernet
Maybe I will try ethercat just for fun
Maybe I will try ethercat just for fun
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- HansU
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25 Feb 2022 18:29 #235812
by HansU
Replied by HansU on topic Which communication port/protocol for VFD
Modbus TCP is also usable, at least if you use the MB2HAL component.
Maybe the VFD Modbus drivers are only using Modbus RTU, I don't know.
Maybe the VFD Modbus drivers are only using Modbus RTU, I don't know.
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- Aciera
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25 Feb 2022 18:46 #235814
by Aciera
Replied by Aciera on topic Which communication port/protocol for VFD
Thanks hansu. I was not aware of that.
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- Perep1989
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01 Mar 2022 10:54 #236089
by Perep1989
Replied by Perep1989 on topic Which communication port/protocol for VFD
We then look at the different communication ports and protocols that they use.
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- rodw
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01 Mar 2022 11:19 #236091
by rodw
Replied by rodw on topic Which communication port/protocol for VFD
A lot of VFD's support RS485 control so you can control from Serial port or USB with appropriate converter
You can use MODBUS or VFDMOD (V\https://github.com/aekhv/vfdmod)
I'm told that VFDmod is easier to configure.
But ask me tomorrow as that is my task for the day.
You can use MODBUS or VFDMOD (V\https://github.com/aekhv/vfdmod)
I'm told that VFDmod is easier to configure.
But ask me tomorrow as that is my task for the day.
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- HansU
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01 Mar 2022 22:01 #236133
by HansU
Replied by HansU on topic Which communication port/protocol for VFD
IMHO Modbus2Hal is at least at easy to configure as VFDMOD and it supports more function codes (at least in master).
Updated documentation can be found here: hansu.github.io/linuxcnc-doc/drivers/mb2hal.html
Updated documentation can be found here: hansu.github.io/linuxcnc-doc/drivers/mb2hal.html
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