Tesla GEN2 Charger Card CAN bus setting

[jsimonkeller]

Hello folks. I have upgraded my V4 Gen2 Charger Card to the newest V5 Gen2 Charger Card with Johan's web interface firmware. On the previous card and the prior interface, I could set my baud rate for CAN bus to 250k, which is the baud rate for my system. I cannot seem to find any way to make this change on the new firmware and wonder if I am missing something. I assume it is defaulted to 500k.

Thanks!

Jsimonkeller

[johu]

That's odd, there is a parameter called "canspeed" down the bottom. Maybe it went hidden, try typing "flag canspeed !hidden" in custom command

[jsimonkeller]

Johan, thanks for the suggestion.

When I entered flag canspeed !hidden it posted a response unknown parameter canspeed.

I am using version 1.07R of your firmware and canspeed does not appear anywhere on the page that I can find.

Any other thoughts?

Thanks!

[johu]

Sorry, I missed that you were talking about the charger. Its speed cannot be changed as the same CAN interface is used for communicating with the Tesla power converters and for external communication. The Tesla hardware requires 500k.

[jsimonkeller]

Ah! That answers my question. On the V4 card, I could have sworn there was a setting to change the can speed, but I might be imagining this.

If I am using the ORION BMS to manage my batteries, I assume I really do not even need to communicate with the charger via CAN bus. I am currently wired into the charger CAN bus inputs (B4 and B10) from my original setup with V4, but will abandon this or cut those wires out if they are not necessary. If so, from the Wiki page, it sounds like I also need to solder the connection above R1 to take the CAN bus out of the picture.

If you do NOT use the external CAN bus on that version remember to close the solder jumper next to R1 under the WiFi module.

Can someone confirm this is what I need to do to take CAN bus out of the equation for my set up? I assume after I do this, I no longer need to remove the 120 ohm built in resistor that would mess with my existing CAN bus wiring that has 120 ohm resistance at both ends (Charger is somewhere in the middle of all of this).

Thanks!