jeka/MyOwnEtherCATDevice
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Updated README after EaserCAT-5000 linuxcnc failure

Browse Source
This commit is contained in:
Hakan Bastedt
2024-12-13 11:05:13 +01:00
parent 77cc13f175
commit 7ebc28a5ca
1 changed files with 14 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
README.md
View File

@@ -83,7 +83,20 @@ If time and interests are in phase with the moon, I might look at PWM_INPUT agai
A card, just doing Digital Input and Digital Output. The intentions are to read A card, just doing Digital Input and Digital Output. The intentions are to read
limit switches and some other switches around the plasma torch. And to switch on the plasma torch. limit switches and some other switches around the plasma torch. And to switch on the plasma torch.
It's a single LAN9252, configured for local IO. Optocouplers are attached to IO pins for isolation. It's a single LAN9252, configured for local IO. Optocouplers are attached to IO pins for isolation.
It has been tested on the bench. And there it works. It has been tested on the bench, it works with TwinCAT.
HOWEVER, it doesn't work, and will not work, with linuxcnc. As I learned,
the IgH EtherCAT master needs a CoE client (CANopen over EtherCAT).
The LAN9252 in DIO mode is only an EtherCAT client and can't be turned
into a CoE client. And the IgH EtherCAT application interface for real-time
communication can not be downgraded to wotk with puer EtherCAT client,
it requires an CoE client.
To add CoE functionality means to add number of objects at certain positions
in the client and that can not be done to the LAN9252. It is what it is.
In a setup with LAN9252 with MCU, those objects are created in the firmware,
so there it works.
[Link here](Cards/EaserCAT-5000-Digital-8In-8Out-LAN9252-only/) [Link here](Cards/EaserCAT-5000-Digital-8In-8Out-LAN9252-only/)
### License ### License