Chris, it was me being a bit sleepy… I reinstalled the plugin because I had messed around with it, and I probably got a reading of the NorthQ before I had copied in the new lua, sorry.
This morning everything looked great, but when I started to save the value in dataMine the third reading went to zero, both in the graph and in the dashboard? No biggie but I just wondered if its the dataMine or NorthQ calc that caused it.
root@MiOS_35104511:/dataMine# cat NorthQ\ Watt\ Calculator\ -\ Watts\ \[R2235\].
txt
1351754644,1537
1351755668,2829
1351755669,0
1351759771,2668
1351761827,2599
1351762847,2950
1351763879,2044
And here is the log:
50 11/01/12 7:32:14.135 luup_log:33: NorthQ Monitor: Data 359.698 to 360.086 in 1036 = 1348 <0x2ba57680>
04 11/01/12 7:32:14.282 <Job ID="901" Name="pollnode_wake #5 3 cmds" Device="9" Created="2012-11-01 7:32:13" Started="2012-11-01 7:32:13" Completed="2012-11-01 7:32:14" Duration="0.461093000" Runtime="0.459167000" Status="Successful" LastNote="" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2ba57680>
04 11/01/12 7:32:14.390 <Job ID="902" Name="Wakeup done 5" Device="9" Created="2012-11-01 7:32:13" Started="2012-11-01 7:32:14" Completed="2012-11-01 7:32:14" Duration="0.568841000" Runtime="0.107063000" Status="Successful" LastNote="Transmit was ok" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2ba57680>
50 11/01/12 7:49:32.475 luup_log:33: NorthQ Monitor: Data 360.086 to 360.404 in 1038 = 1102 <0x2ba57680>
04 11/01/12 7:49:32.772 <Job ID="946" Name="pollnode_wake #5 4 cmds" Device="9" Created="2012-11-01 7:49:32" Started="2012-11-01 7:49:32" Completed="2012-11-01 7:49:32" Duration="0.600855000" Runtime="0.599388000" Status="Successful" LastNote="" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2ba57680>
04 11/01/12 7:49:32.880 <Job ID="947" Name="Wakeup done 5" Device="9" Created="2012-11-01 7:49:32" Started="2012-11-01 7:49:32" Completed="2012-11-01 7:49:32" Duration="0.708999000" Runtime="0.107470000" Status="Successful" LastNote="Transmit was ok" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2ba57680>
50 11/01/12 8:06:49.794 luup_log:33: NorthQ Monitor: Data 360.404 to 360.766 in 1037 = 1256 <0x2ba57680>
04 11/01/12 8:06:49.912 <Job ID="985" Name="pollnode_wake #5 3 cmds" Device="9" Created="2012-11-01 8:06:49" Started="2012-11-01 8:06:49" Completed="2012-11-01 8:06:49" Duration="0.361203000" Runtime="0.359731000" Status="Successful" LastNote="" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2ba57680>
04 11/01/12 8:06:49.990 <Job ID="986" Name="Wakeup done 5" Device="9" Created="2012-11-01 8:06:49" Started="2012-11-01 8:06:49" Completed="2012-11-01 8:06:49" Duration="0.438841000" Runtime="0.76971000" Status="Successful" LastNote="Transmit was ok" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2ba57680>
50 11/01/12 8:24:04.924 luup_log:33: NorthQ Monitor: Data 360.766 to 361.208 in 1035 = 1537 <0x2ba57680>
04 11/01/12 8:24:05.072 <Job ID="1024" Name="pollnode_wake #5 3 cmds" Device="9" Created="2012-11-01 8:24:04" Started="2012-11-01 8:24:04" Completed="2012-11-01 8:24:05" Duration="0.451600000" Runtime="0.443831000" Status="Successful" LastNote="" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2ba57680>
04 11/01/12 8:24:05.180 <Job ID="1025" Name="Wakeup done 5" Device="9" Created="2012-11-01 8:24:04" Started="2012-11-01 8:24:05" Completed="2012-11-01 8:24:05" Duration="0.558954000" Runtime="0.106712000" Status="Successful" LastNote="Transmit was ok" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2ba57680>
50 11/01/12 8:41:08.874 luup_log:33: NorthQ Monitor: Data 361.208 to 362.012 in 1023 = 2829 <0x2ba57680>
50 11/01/12 8:41:09.020 luup_log:33: NorthQ Monitor: Data 362.012 to 362.012 in 1 = 0 <0x2ba57680>
04 11/01/12 8:41:09.024 <Job ID="1066" Name="pollnode_wake #5 3 cmds" Device="9" Created="2012-11-01 8:41:08" Started="2012-11-01 8:41:08" Completed="2012-11-01 8:41:09" Duration="0.453791000" Runtime="0.446109000" Status="Successful" LastNote="" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2ba57680>
04 11/01/12 8:41:09.130 <Job ID="1067" Name="Wakeup done 5" Device="9" Created="2012-11-01 8:41:08" Started="2012-11-01 8:41:09" Completed="2012-11-01 8:41:09" Duration="0.558887000" Runtime="0.104409000" Status="Successful" LastNote="Transmit was ok" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2ba57680>
09 11/01/12 8:56:14.197 JobHandler_LuaUPnP::Run device 9 _NorthQ Power Meter room 0 type urn:schemas-micasaverde-com:device:PowerMeter:1 id 5 parent 1/0xa18ba8 upnp: 0 <0x2ab4a000>
09 11/01/12 8:56:14.197 JobHandler_LuaUPnP::Run device 33 NorthQ Watt Calculator room 0 type urn:schemas-cd-jackson-com:device:NorthQWatts:1 id parent 0/0xa908f8 upnp: 0 <0x2ab4a000>
09 11/01/12 8:56:14.607 ZWaveJobHandler::FindCustomDeviceType node 5/0 has custom 2013 file D_PowerMeter1.xml class ZWaveMultiLevelSensor desc _NorthQ Power Meter <0x2b67d680>
09 11/01/12 8:56:14.629 ZWaveJobHandler::UpdateNodes node 5 pnp 2013 Device_NumTemplate D_PowerMeter1.xml type ZWaveMultiLevelSensor Device_Num 9 Room 0 auto-conf 1 cap 0x52 sec 0x9c res 0x0 bas 0x4 gen 0x31 spe 0x1 config 1 secure 0 _NorthQ Power Meter classes 20,32,3d,56,70,72,7a,80,84,86,8b,91, mfr: NorthQ/Power Meter mfr: 0x96 prodtype: 0x1 prodid: 0x1 notlistening: 1 list:0 rout:1 beam:1 rtsl:1 sec:0 1k:0 250:0 <0x2b67d680>
09 11/01/12 8:56:17.103 ZWaveJobHandler::FindCustomDeviceType node 5/0 has custom 2013 file D_PowerMeter1.xml class ZWaveMultiLevelSensor desc _NorthQ Power Meter <0x2b27d680>
50 11/01/12 8:56:17.131 luup_log:33: NorthQ Monitor: Initialising NorthQ Watt Calculator <0x2b47d680>
50 11/01/12 8:56:17.132 luup_log:33: NorthQ Monitor: Startup complete <0x2b47d680>
04 11/01/12 8:58:21.052 <Job ID="6" Name="pollnode_wake #5 4 cmds" Device="9" Created="2012-11-01 8:58:05" Started="2012-11-01 8:58:07" Completed="2012-11-01 8:58:21" Duration="15.361339000" Runtime="13.309192000" Status="Failed" LastNote="" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2b67d680>
04 11/01/12 8:58:31.522 <Job ID="7" Name="Wakeup done 5" Device="9" Created="2012-11-01 8:58:05" Started="2012-11-01 8:58:21" Completed="2012-11-01 8:58:31" Duration="25.830534000" Runtime="10.468703000" Status="Aborted" LastNote="Transmit failed with code: 1" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2b27d680>
04 11/01/12 9:15:15.411 <Job ID="47" Name="pollnode_wake #5 4 cmds" Device="9" Created="2012-11-01 9:15:14" Started="2012-11-01 9:15:14" Completed="2012-11-01 9:15:15" Duration="0.600533000" Runtime="0.592774000" Status="Successful" LastNote="" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2b27d680>
04 11/01/12 9:15:15.521 <Job ID="48" Name="Wakeup done 5" Device="9" Created="2012-11-01 9:15:14" Started="2012-11-01 9:15:15" Completed="2012-11-01 9:15:15" Duration="0.709916000" Runtime="0.108752000" Status="Successful" LastNote="Transmit was ok" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2b27d680>
09 11/01/12 9:16:25.252 JobHandler_LuaUPnP::Run device 9 _NorthQ Power Meter room 0 type urn:schemas-micasaverde-com:device:PowerMeter:1 id 5 parent 1/0x6d0b80 upnp: 0 <0x2b7cd000>
09 11/01/12 9:16:25.252 JobHandler_LuaUPnP::Run device 33 NorthQ Watt Calculator room 0 type urn:schemas-cd-jackson-com:device:NorthQWatts:1 id parent 0/0x7488f8 upnp: 0 <0x2b7cd000>
09 11/01/12 9:16:25.627 ZWaveJobHandler::FindCustomDeviceType node 5/0 has custom 2013 file D_PowerMeter1.xml class ZWaveMultiLevelSensor desc _NorthQ Power Meter <0x2c301680>
09 11/01/12 9:16:25.650 ZWaveJobHandler::UpdateNodes node 5 pnp 2013 Device_NumTemplate D_PowerMeter1.xml type ZWaveMultiLevelSensor Device_Num 9 Room 0 auto-conf 1 cap 0x52 sec 0x9c res 0x0 bas 0x4 gen 0x31 spe 0x1 config 1 secure 0 _NorthQ Power Meter classes 20,32,3d,56,70,72,7a,80,84,86,8b,91, mfr: NorthQ/Power Meter mfr: 0x96 prodtype: 0x1 prodid: 0x1 notlistening: 1 list:0 rout:1 beam:1 rtsl:1 sec:0 1k:0 250:0 <0x2c301680>
09 11/01/12 9:16:28.126 ZWaveJobHandler::FindCustomDeviceType node 5/0 has custom 2013 file D_PowerMeter1.xml class ZWaveMultiLevelSensor desc _NorthQ Power Meter <0x2c101680>
50 11/01/12 9:16:28.310 luup_log:33: NorthQ Monitor: Initialising NorthQ Watt Calculator <0x2bf01680>
50 11/01/12 9:16:28.311 luup_log:33: NorthQ Monitor: Startup complete <0x2bf01680>
04 11/01/12 9:32:23.201 <Job ID="38" Name="pollnode_wake #5 4 cmds" Device="9" Created="2012-11-01 9:32:22" Started="2012-11-01 9:32:22" Completed="2012-11-01 9:32:23" Duration="0.580574000" Runtime="0.573377000" Status="Successful" LastNote="" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2c101680>
04 11/01/12 9:32:23.310 <Job ID="39" Name="Wakeup done 5" Device="9" Created="2012-11-01 9:32:22" Started="2012-11-01 9:32:23" Completed="2012-11-01 9:32:23" Duration="0.688869000" Runtime="0.107648000" Status="Successful" LastNote="Transmit was ok" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2c101680>
50 11/01/12 9:49:31.984 luup_log:33: NorthQ Monitor: Data 364.546 to 365.308 in 1028 = 2668 <0x2c101680>
04 11/01/12 9:49:32.132 <Job ID="79" Name="pollnode_wake #5 3 cmds" Device="9" Created="2012-11-01 9:49:31" Started="2012-11-01 9:49:31" Completed="2012-11-01 9:49:32" Duration="0.451758000" Runtime="0.443386000" Status="Successful" LastNote="" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2c101680>
04 11/01/12 9:49:32.240 <Job ID="80" Name="Wakeup done 5" Device="9" Created="2012-11-01 9:49:31" Started="2012-11-01 9:49:32" Completed="2012-11-01 9:49:32" Duration="0.559055000" Runtime="0.106585000" Status="Successful" LastNote="Transmit was ok" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2c101680>
04 11/01/12 10:06:51.622 <Job ID="119" Name="pollnode_wake #5 3 cmds" Device="9" Created="2012-11-01 10:06:37" Started="2012-11-01 10:06:40" Completed="2012-11-01 10:06:51" Duration="13.681486000" Runtime="11.619187000" Status="Failed" LastNote="" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2c301680>
04 11/01/12 10:07:01.372 <Job ID="120" Name="Wakeup done 5" Device="9" Created="2012-11-01 10:06:37" Started="2012-11-01 10:06:51" Completed="2012-11-01 10:07:01" Duration="23.430826000" Runtime="9.748305000" Status="Aborted" LastNote="Transmit failed with code: 1" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2c101680>
50 11/01/12 10:23:47.574 luup_log:33: NorthQ Monitor: Data 365.308 to 366.792 in 2055 = 2599 <0x2c101680>
04 11/01/12 10:23:47.722 <Job ID="157" Name="pollnode_wake #5 3 cmds" Device="9" Created="2012-11-01 10:23:47" Started="2012-11-01 10:23:47" Completed="2012-11-01 10:23:47" Duration="0.421230000" Runtime="0.412075000" Status="Successful" LastNote="" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2c101680>
04 11/01/12 10:23:47.831 <Job ID="158" Name="Wakeup done 5" Device="9" Created="2012-11-01 10:23:47" Started="2012-11-01 10:23:47" Completed="2012-11-01 10:23:47" Duration="0.529757000" Runtime="0.108101000" Status="Successful" LastNote="Transmit was ok" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2c101680>
50 11/01/12 10:40:47.694 luup_log:33: NorthQ Monitor: Data 366.792 to 367.628 in 1020 = 2950 <0x2c101680>
04 11/01/12 10:40:47.842 <Job ID="198" Name="pollnode_wake #5 3 cmds" Device="9" Created="2012-11-01 10:40:47" Started="2012-11-01 10:40:47" Completed="2012-11-01 10:40:47" Duration="0.451258000" Runtime="0.443757000" Status="Successful" LastNote="" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2c101680>
04 11/01/12 10:40:47.950 <Job ID="199" Name="Wakeup done 5" Device="9" Created="2012-11-01 10:40:47" Started="2012-11-01 10:40:47" Completed="2012-11-01 10:40:47" Duration="0.558898000" Runtime="0.106867000" Status="Successful" LastNote="Transmit was ok" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2c101680>
50 11/01/12 10:57:59.204 luup_log:33: NorthQ Monitor: Data 367.628 to 368.214 in 1032 = 2044 <0x2c101680>
04 11/01/12 10:57:59.352 <Job ID="236" Name="pollnode_wake #5 3 cmds" Device="9" Created="2012-11-01 10:57:58" Started="2012-11-01 10:57:58" Completed="2012-11-01 10:57:59" Duration="0.451393000" Runtime="0.440736000" Status="Successful" LastNote="" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2c101680>
04 11/01/12 10:57:59.520 <Job ID="238" Name="Wakeup done 5" Device="9" Created="2012-11-01 10:57:58" Started="2012-11-01 10:57:59" Completed="2012-11-01 10:57:59" Duration="0.618092000" Runtime="0.97905000" Status="Successful" LastNote="Transmit was ok" Node="5" NodeType="ZWaveMultiLevelSensor" NodeDescription="_NorthQ Power Meter"/> <0x2c101680>
Just cosmetics, or me messing up as usual… 
Thanks by the way, with this plugin and dataMine my NorthQ got useful and not just a gadget!