Thanks for the info , so the bottom line if I understand correctly, is that the Zero will work as a Serial Gateway and NOT work as an Ethernet Gateway.

@scalz Thanks for the reply....
I'm just trying to use the default gateway sketch in the master branch. I hooked up the W5100 to the Zero without the NRF radio and loaded a test sketch which worked fine. I guess I don't know the proper defines to use and or using the wrong pins on the Arduino Zero. I do have a Ethernet Gateway currently running now with a Mini Pro and a W5100 module. I hacked the W5100 with an Inverter on the "SEN" pin so both can share the SPI bus, this has been working well. My goal is to replace the Mini Pro with the Zero. Now that I know the Zero will work I will do some more work on it.

Does MySensors support the Arduino Zero ? I have one and would like to use it as an ethernet gateway. The code does compile but I don't get anything on the serial monitor. Any advice would be helpful.

You might try a 5 volt wall wart. I've found that some of them will actually run off of 24 vac as long as you don't need a lot of load. I've done it and it worked for me.

"I still can not fetching time from controller"

I replaced ;
if ((!timeReceived && now-lastRequest > 101000)
|| (timeReceived && now-lastRequest > 601000*60)) {

with;
if ((!timeReceived && now-lastRequest > 10*1000)
|| (timeReceived && now-lastRequest > 3600000ul)) {

It started fetching time from the controller after that. I'm just using the TimeAwareSensor.ino sketch and an ethernet gateway.
Maybe this will help...........

@gregl ,
Thanks for the warning ! Yeah my code is iffy at best sometimes. When I said "electronics" i meant the circuitry that i had to build for the sensor arduino ( zero crossing detector and triac driver stuff for the motor). For now I'm only interested in adding the Thermostat device, measuring the fireplace temp and controlling the fan speed. Maybe later I will look at adding servo control on the gas flow control.
I have not bypassed any of the fireplace safety interlocks. I'm treading very carefully ! That's part of the reason it's taking so long. By the way I'm just doing this because I think I can and it's possible because of all the hard work @hek and others have done.
Thanks to all and especially @hek !

@gregl
I'm currently in the process of updating all my gateway,sensors to version 1.4. It's slow going for me as I have to learn the new gw.send... commands ect. but have been making steady progress. So far it seems like the Heater Device will work fine now.
The sketch is for a gas fireplace control using a Dallas sensor to replace the snap switch and a DHT22 to monitor room temp. Also going to vary the speed of the fireplace fan using a "pulse skip" speed control method instead of a "phase angle" control. Works way better for AC motors in my opinion. Got the electronics done and now working on the software side. The Heater device in 1.3 was holding me up before, so once I get everything upgraded to 1.4 I can finish up. I'll post the sketch when I'm done. (may be awhile as I'm old and slow)

@gregl
Thanks for the example ! I have been able to get it working now with your help. But what I am finding is that the heater setpoint is not getting sent back to the gateway properly. I found the link below that seems to address this but it appears to be only committed to 1.4 and not 1.3. I may just go ahead and make the jump to 1.4.
Thanks.

http://forum.mysensors.org/topic/198/heater-vartypes-declaration-in-l_arduino-lua/1

Update: (Heater Device) After doing some further research and reading i found that there was some issues in Version 1.3 ( which I am currently on). It appears that it was fixed in 1.4. So my question now is whether to upgrade to 1.4 or if someone has a patch for 1.3.? Apparently very few people are using the Heater device.
Thanks..

I've been trying to get the Heater Device (thermostat) working in Vera but I'm having some problems with the "Off
" and "Heat" buttons. I can see in debug that it is sending "Off" and "HeatOn". Shouldn't the buttons in the Vera device light up or something when pushed?
I got the temperature being displayed in the Heater device in the UI.(using a DHT22). Maybe someone has a example sketch that has used this that I could look at. What am I missing ?