Park: soft or hard?

[Earl]

Last night my setup was parked (still connected to software via POTH) and we had a powercut.

Just popped into the obsy toi turn the laptop back on as it had not automaticaly come back on (not sure if it supports power state resume need to check)

My mount had unparked itself and started to track in RA, thankfully no collision had occured.

Any thoughs on why? im using a Takahashi EM400

[ronin]

All I can think is that when Parked the mount expects to be powered off.

Then it expects to come back to life, and to spring into life at the Park position and for whatever reason goes to a non-park operation so starts tracking.

It will be someones idea that you park, power down, power up and intend to use the scope so it comes out of Park.

Would be safer if at power up it remained in Park and that you changed mode, but usually the default for a goto mount is track at sidereal, and that I guess is what the power up after park defaults to.

There might (just might) be an option to select in the menu somewhere for what should occur.

Suppose you could contact Tak and ask if a menu selection could be incorporated if there is none. It seems the sort of good feedback that may prove useful to them.

[Iver]

I assume your EM-400 is a Temma goto and you parked with Chucks ASCOM driver? The Temma electronics can't save settings through power cycles!  Chucks driver uses a software work around to provide a park feature by saving the scopes position and tracking state on your computer. After a power outage once power is back on the mount resumes tracking unless it is reconnected to  chucks driver so the saved settings can be sent to the mount. I use a pic that controls a solid state relay for the mounts power supply, if the power goes off the pic need to be set back to on. 

[Earl]

Thanks for confirming Iver, ill need to make sure it stays off after any power outage.