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Zero Motorcycles Forum | 2013+ / Re: Making the Tesla Wall Connector v2 work with the DigiNow Tesla to J1772 adapter
« on: January 13, 2018, 11:11:41 PM »It's a shame Tesla doesn't even give that option in the installation manual. It only states that the second dip switch should ALWAYS be in the up position. I would have tried it sooner, in fact my electrician wanted to, but I was afraid of harming the wall connector by defying the instructions. So much for a company that loves to boast about its commitment to advancing sustainable transport for everyone and "open patents". 🙄
They don't describe it in the manual, but there is a hint at it in the label you see when you take off the TWC cover (attached). It says down dip is "Communication: Legacy" and contact Tesla before using.
We've been talking about these new TWCs over here and I believe they moved to a new protocol not to reduce compatibility with other EVs but to increase features when daisy chaining TWCs to share a power source. The protocol additions allow the TWC to communicate with a plugged Tesla to determine its charge state, and there is observational evidence that multiple TWCs connected together will use the charge state to give the car with the lowest charge the most power.
As people have discovered, it wasn't the new protocol that caused the DigiNow adapter to break but an enforcement of the J1772 state timing requirements with the dip switch up. I remember reading there is a safety reason for those timing requirements but I can't seem to find it at the moment. Other than the timing requirements, it looks like dip switch up remains backwards compatible with J1772.