Jan:
Interesting developments today.
I discovered that, with both 1-wire busses disconnected, it comes up fine on the normal power supply, but not the battery, even when the battery is at 12.6 volts.
Then I discovered that, with both 1-wire busses (temperature sensors and rotor), it wouldn't respond, whether I powered up on battery or normal power. (battery and normal power connect to WebSwitch through "auctioneering" diodes.)
Then I discovered that, the "ground" on the rotor 1-wire buss had become disconnected from the common on the WebSwitch. Reconnected it, and now it responds fine when I power up on the normal power supply. Still does NOT respond when I power up from the battery.
Then I was able to successfully add one of the new temperature sensors that started all this, scan it, name it, and have it read properly.
Additional information: The backup battery is a gel-cell, about 1 year old. When normal power is on, it is monitored and charged as necessary by a "BatteryTender" device. Ultimately it will be charged by some solar panels, connected via controllers which will prevent it from being over-charged and disconnecting the load if battery voltage gets too low.
Additional observation: When WebSwitch powers up, the green and yellow LEDs near the ethernet jack come on. When powering up on battery, the green flickers in sync with the "data" LED on the adjacent switch; the yellow stays on. It will not respond. When powering up on normal power, both LEDs come on, but then the yellow goes out, and only the green flickers. Once I can see the green only, it responds instantly to the browser.
Additional observation: Battery voltage during startup attempts ranged from 11.6 to 12.6 volts; label on WebSwitch says 8 VDC is minimum.
Question: What does the yellow LED indicate?
Question: I have the 1-wire "ground" connection isolated from power ground and cabinet ground. Should it be? Or should it be connected to power ground and/or cabinet ground? Or are they connected inside WebSwitch, and it doesn't matter?
Making progress and learning things here.
Thanks,
Jim