Web Energy Logger (WEL) User Guide: Rev 2.5 (Rev 3.3/4 boards
Contents
1. L bo eb Scan Bus Wait 6 seconds after clicking and then refresh this page Due to WEL s memory limitations the calibration Web page is split in two sets of 50 devices When a change is made simply submit that set of values Note that this page also has a Scan Bus button to aid in initial system installation Page 16 of 32 5 4 Define Edit Expressions This page enables users to create special Virtual devices called expressions which can be used to perform simple mathematical calculations on sensor data The results of these expressions can then be posted to the Web just like real device data Expressions are VERY rudimentary and they come as two basic building blocks One building block lets you create a Constant number that can be used in other expressions The other building block lets you perform a Simple Operation on two device values This operation could be add subtract multiply or divide or it could be a Boolean and or operation or it could be a lt gt comparison The result of the operation is saved out as the value of the Virtual Device This value can also be accumulated like other devices Expressions are created using a two step process First you do an Add New Expression and then you Edit the new expression it to set its behavior The following screen shows the process of editing an expression The Web form presents two gray areas OCH WEL Expression pa2. wire is a common ground that is connected to either of the run monitor COM inputs on either end of the terminal strip on the WEL The red wire is the actual signal wire and each of these is connected to a sepparate run monitor input 1 8 This photo shows 3 CS s connected to the WEL as Run inputs 6 7 amp 8 If it s not convenient to wire a CS directly to the WEL or if you need to monitor more than 8 devices have developed a 1 wire interface for the Current Switch This interface is wired to the CS and provides the standard Black Yellow wire pair that can then be connected anywhere on the 1 wire bus This configuration can provide the ultimate in wiring convenience and flexibility call this my 1 wire Current Switch p n WEL CS Page 7 of 32 3 3 Power Watt meters The WEL has four inputs that can count pulses indicating power consumption Although the WEL can work with most pulse output meters only one brand provides the high frequency outputs that enable me to calculate an accurate instantaneous load These units come from Continental Control Systems www CControlSys com and they are called Pulse Output WattNodes Note The WEL requires a high frequency output WattNode model WNB 3Y 208 P 300Hz The 300Hz suffix is essential to get the high frequency version of the unit Without this you will not be able to accurately measure load in watts Continental Control Systems LLC WATTNODE WNB 3Y
3. 900 400 7 Hours Zone1 Red Zone2 Green On Zone1 Red Zone2 Green Realtime Sensor Text Edit Name X Y R G B Format Date 20 40 255 0 0 text Time 20 55 0 255 0 text 6 3 Viewing the Last Post The first box at the top of the screen shows the last data that was posted by the WEL This is useful during debugging to ensure that you are getting data check the date amp time sections and to verify the names of posted sensors The View Live Updates link will take you to a page that shows all your generated images These will automatically update each time you get a WEL data post This is another good page to bookmark as it s not password protected so you can send the URL to your friends or just use it to check your WEL 6 4 Setting the LogOrder The first thing you need to do is define which sensors will be logged and in what order This is a good time to sit down and give names to all the sensors you intend to have attached to the WEL Start a document or spreadsheet to keep track of the names and functions These names MUST match the names you define on the WEL but don t worry if you haven t installed them yet Just give them a name and add them to the LogOrder Each time the WEL posts data the values of the sensors in the LogOrder are added to your downloadable Log File They are stored in tabbed columns that can be imported into Excel Choose a log order that will make it easy to view and analyze your data
4. for Pulse rate Daily Pulse Count and Monthly Pulse count Each device may be scaled differently This may be an advantage on different types of sensors like flow meters or event counters These software pulse counters also have a frequency limitation of 200Hz You need to enable these counters in the System Configuration page of the WEL s setup set the number of Internal Pulse Counters to 1 or 2 The Pulse3 and Pulse4 counters appear automatically on the Device list with ID s or 8 and 9 They have with Device Types of 29 and 6 respectively These counters each consume a single Device slot but Pulse rate Daily PulseHours and Monthly PulseHours count can be easily obtained just by setting the Accumulation to b See section 5 4 below Page 8 of 32 4 0 Getting Started The easiest way to get started is to connect the WEL to an active Local Area Network and apply power You can do this by plugging the WEL into a hub or router in your home or office and then connecting a WEL power supply Note It may be possible to plug the WEL directly into your computer s network card but you will need a special Crossover cable to do this You ll also need your PC set up to generate an IP address for the WEL via DHCP 4 1 Powering up When power is applied the WEL will boot up and load it s operating program from FLASH memory The 6 status LEDs give a very characteristic ramp display to signal the start of boo
5. s software functions This RMC3700 module contains CPU RTC RAM FLASH and Ethernet Interface The Ethernet Interface is a RJ 45 connector identified at the bottom of the enclosure On power up the RCM3700 boots from the flash file system The program starts and initializes all the onboard systems The program then scans all the system sensors and posts data as required The program also starts the local Web Server that is used to perform WEL configuration Each WEL is shipped with a standard Network configuration default IP address is 0 0 0 0 Network Mask 255 255 254 0 Gateway 192 168 1 1 Name Server 192 168 1 1 The 0 0 0 0 IP address causes the WEL to obtain a dynamic IP assignment from the network Host The LocatelP exe program can be run from a networked computer to determine the IP address assigned to the WEL A predefined Fixed IP can be requested when ordering the WEL or configured using the LocatelP program See section 4 2 for more details Page 3 of 32 2 3 i Button Link A robust 1 wire interface from www ibuttonlink com is used to drive the 1 wire sensor network This interface supports mixed network topologies bus star branch and the Strong Pull Up function required for parasitically powered devices It s considered an Advanced 1 Wire Interface The 1 Wire signals are available on J3 Although only 2 signals are required for 1 Wire operation 1W Gnd and 1W Bus two additional power options are provid
6. IP Address sas 20 5 7 Configure Serial Logging essssesssssessessresresseeseesresstesestsstessesrtsstessesstssressessessesseeseesessee 20 5 8 Set Date and TMe sneti e n e a a e a a a ers 21 59 JDelete nused devices A E E A R AR 22 310 Soft Boot the WEE ii 23 6 0 Owner Website SUID ict ia a A T T A OR 24 6 1 Getting A 24 62 gt A O 24 63 Viewing th L st A ales cisco Cetra A te es chg el ee cs E aie ods 25 6 4 Setting the Lordi 25 6 5 Defining Graphs or Ch rts NA A RA a 26 6 6 Defining your Live System Da aii 27 G a Watehing your data cts dona icaee ena e a cass a O a a Me aeeaatons 28 Appendix A Device Type COCOS ccccceccccccccccnncaeeesseeeeeescnnaaecsaeeeeesseaaaaeeaaeeeeeeseasaaeseaeeeeessenaaas 29 Appendix B Compatible Third Party 1 Wire devices ooooooocoococococoooononoonn nono nnnnnnnnnnnnnnononnnnnnnnnonos 30 Appendix C Temperature Measurement tipS oooooooooconnccccnoncconoconnnncnnnnnnnnnonannnnnnnnnnnnnnnnannnnnnnnnnnnns 31 Appendix D Diagnostic Data included in WEB POS 22 ccc sseeeeeeeeeeececeeeeeeeeeeseeeeaaaeeseeeeeesseenenas 32 Page 1 of 32 1 0 Overview The Web Energy Logger WEL from OurCoolHouse com is designed to monitor and log the energy characteristics of a building The basic WEL unit can read a large number of networked sensors temperature amp contact closure 4 pulse output devices watt meter or flow meter and 8 local contact closures Filtered data is
7. WEL it s probably because your PC s firewall is preventing the WEL s response from getting back to your PC Try turning off your Firewall temporarily Then turn it back on again once you have the WEL s IP Also try resetting the WEL to let it request an IP address again 4 3 Using your browser to configure the WEL Once you know your WEL s IP Address you can use any Web Browser to configure it Start your Web Browser on the same computer that you ran the LocatelP program on Enter the WEL s IP address in the location that you would normally type a Web Page s name At the end of the IP enter the WEL s port number as 5150 colon followed by the number 5150 In this example the address would be entered as http 192 168 1 50 5150 Note that the address starts with http and ends with 5150 This connection is not being made to the standard Port 80 it is using Port 5150 to enable remote access via a network router Aden ive Dat The Web browser should now display the WEL s Home page shown at right All WEL pages have a graphic button in the top left corner that can be used to return to the main home page In addition at the top of all pages are simple hyperlinks to the four most commonly used pages The WEL s software version and network information are the first things displayed on the home page If your WEL shows a software version less than 2 16 then you need to use a previous version of thi
8. add what location and color to use and how to format the text This is done using a simple web form where each item is defined by one row of a table on the form See the sample edit page below Date and Time are always the best to start with and the default Owner Setup page has these already Just change the position to suite your graphic Remember the System diagram is only updated once a minute so allow enough time between changes to see your results Watch the time on your image change to tell if the image should have been updated Note The Tips on this edit page are EXTREMELY important so make sure you read them to get the most out of your image Here is a sample Live Image Text Edit page Page 27 of 32 WEL9999 Image Text Return to main page Posted Name X Y Pos Color Format Posted Posted eg T1 100 150 255 0 0 Bedroom 3 1 F Name Value AirTemp 70 0 Time 20 55 0 255 0 tex Ee 0 AirTemp 20 100 0 0255 Temp 3 1 F GSHP___ 0 0 GSHP_D 0 00 Zone1 20 120 128 128 0 Zonet ON GSHP_M 125 Zone1 20 140 0 0 0 Zone2 ON Net 0 0 N i 7 Netin 0 0 Net_In_D 0 00 Net_In_M 0 00 Net_Out 0 0 ATOM Net_Out_D 0 00 Net_Out_M 0 00 Time 12 32 29 och NA MA Zone foo Save Changes Zone1_D 0 00 Zone1_M 0 50 6 7 Watching your data Remember that there is a pub
9. been requested the program won t restart for 10 12 seconds until the boot sequence is complete At that time you may need to use LocatelP exe again if the WEL is assigned a new IP address Page 23 of 32 6 0 Owner Website Setup It s more fun to set up your Web Logging page when you have real data coming from your WEL but if you don t have your WEL yet you can still get ready by defining your expected data and desired display In section 5 we were dealing with web pages that exist on the WEL board itself However all of the Web Pages described in this section relate to the Online Owner Setup pages that exist out on the World Wide Web This is where you WEL posts its data and this is where the cool graphics are generated and where the sensor data logs reside 6 1 Getting access There are three main Owner Setup activities and they are all managed from your password protected Owner Setup page which is located at www WELServer com Once at this website you can click any of the protected links in the Owner Setup section of the left hand menu The best place to start is Setup Overview To access your setup page you will be asked for a User Name and Password You must enter your WEL s Site ID and password These are the same items that appear on your WEL s Configure Site page You will also receive these from Phil when he ships your WEL unit If you don t have this information call or email Phil Phone 301 387 2331 Phi
10. far as recommending the AGG 1 Wire Weather Instrument because the interface seems a bit unpredictable if you already have one and would like to hook it up to the WEL then it s possible to turn the 4 channels of wind direction information into a wind sector and heading Find the 1 Wire device with a Device Type of 32 and set the Accumulation to W The WEL will now post _D as wind direction in degrees and _M will report a wind sector from 0 to 15 0 being North and turning clockwise 22 5 degrees per sector The final button on this page is used in the UNLIKEY event that you wish to clear the WEL s memory of all devices and force it to completely recreate the list of sensors All the assigned names will be lost in this process so it should only be used when absolutely necessary Page 15 of 32 5 3 Calibrate Devices Scale and Offset This page is used to set the scale and offset for a device in order to convert from a raw sensor value to a more desirable real World value Some devices appear with a default scale and offset like temperature sensors but usually the scale defaults to 1 0 and the offset defaults to 0 0 The scaled value is calculated as follows Scaled Raw Scale Offset Some devices appear with a default scale and offset like the temperature sensor in the example below but usually the scale defaults to 1 0 and the offset defaults to 0 0 The Web page shows the most recent raw and scaled va
11. graphs Read the instructions on that page for detailed information on how to define graphs Here is a sample Graphs Edit page WEL9999 Graphs See the Tips section below for configuration help r Posted Posted Return to main page Name Value Graph Name Size W H TimeSpan Lines Units Caption AirTemp 70 0 eg AirTemps 400 200 24 Hours T1 Red T2 Blue F Zones Red Bedroom Blue Office Date 11 12 2007 AirTemp 900 400 7 Hours AirTemp Green Fo AirTemp Green zm gt Zones 900 400 7 Hours Zone1 Red Zone2 Green on Zonel Red Zone2Green GSHP_D 0 00 oo IF es 125 Net 0 0 Net_In 0 0 Net_In_D 0 00 Save Changes Net_In_M 0 00 Net_Out 0 0 Page 26 of 32 f Net_Out_D 0 00 T 6 6 Defining your Live System Diagram OK this is the BEST thing you can do with WEL data This is where you get to pull all the WEL data together on one cool system diagram that automatically gets updated with sensor values It all starts with you creating a Template image Take your favorite image creation program paintshop photoshop visio whatever and draw a diagram of the system you are monitoring Don t go crazy right off the bat making it too big or too complicated Start out with a size that s easily viewable on most computers I d recommend making it less than 800 pixels wide and less than 600 pixels tall In fact 640x480 is a great size Then decide how you want to depict your system
12. 1 wire devices Any devices that it finds are marked as Found and a Y is placed in the found column If a 1 wire device was previously found but is no longer present it is marked as Not Found with a N character When new 1 wire sensors are added to the bus you must trigger a Bus Scan to have it appear on the sensor list as Found Only devices marked as Found are then polled and reported to the Web V Valid Since the WEL knows what sensors were found when it last scanned the bus is expects those devices to be there each time it polls the bus for data Whenever a device is polled and returns good data the Valid count is set to 5 So a 5 in the V column means that the sensor is fully functional However if a device does not respond or if the returned CRC from that device is invalid its Valid count is decremented This will happen each 6 second poll cycle Soa 0 in the V column means that 5 attempts in arrow to read that device have failed so the device is considered bad and no data will be posted for it Raw This is the raw unscaled value of the sensor For example this will be the temperature in degrees Celsius for the 1 wire temperature probes Scaled This will be the scaled value of the sensor Every device slot has its own scale and offset which can be applied to the raw sensor value For example the scale and offset for a temperature sensor defaults to 1 8 an
13. 208 P 120V 50 60Hz JW gt Continental Control Systems 1 Like the current switches the WattNode also has optically isolated outputs that can be wired directly to the WEL s inputs The COM output is wired to the common GND input on the WEL and the P outputs are wired to one of the PULSE input terminals on the WEL J5 The WNB is able to measure power flow in two directions so it s an ideal meter for use on a Net Metered PV or Wind powered home In this situation the meter generates two separate pulse streams Output P1 indicates the conventional demand load and sends contact closures when the net flow is into the home Output P2 indicates the excess home generated power PV or wind and it sends contact closures when the net flow is into the grid Both of these outputs are wired to the WEL which can then display them individually or subtract P2 from P1 to form a single Net load The WEL has four PULSE inputs but they are not identical Pulse1 and Pulse2 are software counters tied to interrupts Pulse 3 and Pulse 4 are hardware counters tied to a DS2423 dual counter chip This is the same chip that can be used externally attached to the 1 wire bus NOTE Pulse3 and Pulse4 counters are best suited to power measurement so they should be used first when connecting wattmeter pulse outputs to the WEL Their frequency range is well over 1 KHz The Pulse1 and Pulse2 counters have the advantage of providing 3 distinct devices
14. 28 physical 1 Wire devices It was added to support additional expressions which also take up a device slot Some configuration screens have been changed to support this increased device number This entailed splitting the device list into several sections to permit smaller groups of devices to be updated at once The remainder of the screen is links to specialized configuration pages The links start with the most commonly used pages and progress down to pages that are only used infrequently These pages are described in detail in section 5 Note Version 2 16 adds a new link Edit Accumulated Values Use this link to reset or modify the values of any accumulations that you have configured for your WEL Page 11 of 32 5 0 WEL Configuration pages Section 4 3 introduced the WEL s home page Access this page by entering the WEL s URL on you home web browser A sample URL might be http 192 168 1 50 5150 At the bottom of this page are a series of hyper links to specialized configuration pages Each of these pages is described below Each sub section s title is the same as the text for the link 5 1 Display Live Data This page is used to show the live and accumulated values for ALL of the WEL s devices as well as internal device information Each row in the table is a Device Slot Each slot has several attributes as indicated by the column headers These are defined as follows Dev Device ID As each device is ad
15. Missing sensors are logged as Question marks to keep the columns intact Page 25 of 32 Click the Edit link above the LogOrder Box to make changes to the Log Order Note The LogOrder Edit page also contains a link to your actual Log files so go there to download them Here is a sample LogOrder screen WEL9999 Log Order More Tips can LogOrder Enter each sensor name you want logged into the box below ATemp _ 700 Date Time Zonei Zone2 Zone3 Zone4 AirTemp Net Date 11 12 2007 Net_D Net_M Ee 0 GSHP 0 0 GSHP_D 0 00 GSHP_M 1 25 Net 0 0 Net_In 0 0 El Net_In_D 0 00 Save Changes Netin M 0 00 Net_Out 0 0 Log Files Right click to Download Net_Out_D 0 00 WEL log_2007_11 xIs lt lt DELETE LOG gt gt I m Sure Net_Out_M 0 00 Time 12 32 29 Zonet 0 0 6 5 Defining Graphs or Charts The second best thing you can do with WEL data is build graphs You can have up to 12 graphs each with up to 8 sensors on them Graphs are great for plotting Zone Air or Water temperatures or GSHP power usage or whatever If you really want to see how something is working then graph it Graphs can show short or long trends from hours to weeks You get to set the size and duration of the chart just by entering some simple information Click on the Edit link above the Graphs box to start defining
16. Web Energy Logger WEL User Guide Rev 2 5 Rev 3 3 4 boards Rev 2 16 software By Phil Malone OurCoolHouse com Revised 2 28 2010 Table Of Contents 1 0 Overview en dal 2 2 0 Hardware tad e a A A a a E rr yer rere e 3 2 1 Power Supply anoo ana dd e e 3 220 Rabbit CPU senean mnara TEO 3 2 3 Button Link iS dE A A A EE Oa EEA 4 2 4 Pulse Counter Flow Watt Meter interface ccccscccssssccssscecsscecssscecssscecssccessseceesseeeesseeeens 4 2 5 Contact CLO SURE TINO UEG ea Se caste n a a a a tt a 4 2 6 Serial COMMUNICATIONS eers a EEE e AE ETENEE TRAE E EAA A EEE RA REEE 4 ZT LED indicators A aR E a a a a a oe ngs 4 3 0 Connecting WEL SENSOTS 0 i EEEE AR AR A iita 6 3 1 DW Aes Sensors niens k a aE E E EEE A a a aE aS Sh 6 Sd NA iae a EE E E E EE E E E A E E E EAEG EEE 7 3 3 POWER WALL motera o R 8 4 0 GORING SIAM A O uo E e ceed te Gaerne 9 4 1 Powering Ups cites nn tse ak ae ie lel ee ree den Do e E Rae Ma eo 9 42 Locating the WEIS IP Address ds 9 4 3 Using your browser to configure the WEL ccssccssccssccesnccsesscssceseccesncesenscecessccenscesnsees 10 5 0 WEL CONMOURATOIN PD ACCS sa eco a ca a tase A a a es eae Teepe a 12 5 1 Display Live Di risa 12 5 2 Set Device Names and Accumulations it A 13 5 3 Calibrate Devices Scale and OTSEtyieisvissd acs eusren ui la Satie ate eas wan atin eases 16 5 4 DEMME Edi EXPresSionS ett oa dearer ae Berane 17 5 5 System Commo uration sectes iii tna 19 5 0 Configure
17. ations This was to accumulate hourly run times for equipment using Run Monitor inputs For every minute that a run monitor was on the Accumulated value increased by 1 60 This was soon enhanced to accumulate ANY device value However the assumption has always been that the device being accumulated was measuring some hourly rate So any device that is measuring Somethings Hour can be accumulated The result is how many Somethings have been used this Day and this Month Likely candidates are Watts to give WattHours BTU H to give BTU s Gallons Hour to give Gallons There is no point accumulation something like Temperature because Degrees Hours don t mean much Unless you are being clever and calculating cooling degree hours in which case Woo Hoo you really get it Letters that are used for basic run time accumulations are D daily M monthy or B Both If the accumulated values get too big as with WattHours you can use the lower case version d m amp b to have the result divided by 1000 Page 14 of 32 To extend the basic accumulation concept rev 2 16 adds Yearly accumulation Y The accumulated value is only reset on the first day of the new year As with d and m a lower case y accumulates at 1 000 the rate for Kilo Somethings If you turn on Yearly accumulation the _M value still accumulates Monthly but the _D value will hold the Yearly accumulation Special Accumula
18. color code To attach a temperature sensor you just need to wire it to the bus at the desired location like to use an attachment device called a Tap Splice This gadget lets me crimp the sensor wires to the bus without any cutting stripping or soldering A Tap Splice is clipped onto one bus wire and the corresponding Sensor wire is inserted into the splice The assembly is then squeezed using a large pair of pliers and the connection is made The operation is repeated for the other wire Here is a picture of a finished splice pair The bus is running along the top of the image and the attached sensor wires are leaving at the lower right Notice that nothing is happening to the red wire this is because a temperature sensor can obtain its own power from the signal bus Each of my temperature sensors come with two Tap Splices like the ones the phone company uses for its wires In some situations it s just not convenient to have one single long bus for all the sensors In these cases one incoming pair might need to branch out to several sensors throughout the house eg at thermostat locations Here the various pairs are connected in parallel to form a Star network You should attempt to limit the number of stars in your system by deciding on a central hub location and only fanning out from there Technical note If you don t want to use my sensors you can roll your own using raw temperature sensors from Max
19. d 32 to convert Celsius to Fahrenheit See section 5 3 for more details on Scales and Offsets Day _D This is the accumulated Hours value for this device There will only be a number in this column if Day Accumulation is turned on See section 5 2 Accumulation is useful for sensors like WattMeters or Run monitors Each minute the current scaled value of the device is multiplied by 1 60 and added to an accumulated total This converts an on off run monitor into run hours and a wattmeter device into watt hours It s also possible to request an additional reduction by 1000 and a K after the accumulated value indicates this Day accumulations are reset each evening at midnight Month _M Like the accumulated Day hours this column shows the accumulated Hours value for the current month This value is reset at midnight at the end of the last day of the month Note In addition to time accumulation these values can also be used for other special processing See section 5 2 for a full description of other uses for accumulation This page also contains a link at the top to Edit Accumulations Use this link to reset or change current accumulated values 5 2 Set Device Names and Accumulations This page is used to set the Name and Accumulation mode for each device slot For explanation of the ID Type Address and Found columns refer to the descriptions found in section 5 1 Each slot can be given a name of up to 16 cha
20. ded to the system it is allocated a sequential device Id Once assigned a particular device will keep its ID even when powered of unless the user manually deletes the device from the system see section 5 x for details of deleting devices Address A Device Address will either be the 64bit unique number assigned to a 1 wire device or it will be a special code assigned to a virtual device by the WEL program itself In the example above addresses like R1 R2 and d3L d9L are virtual devices whereas the 16 character Hexadecimal numbers are actual 1 Wire devices If two or more device slots have the same address it means that there is more than one sensor in a physical package Each sensor has it s own slot but they share a 1 wire address Type There are many types of Device Slots This number is a code to indicate the slot s function Appendix A has a list of different device types Name For a device value to be posted to the Web it must be assigned a logical name This name can be up to 16 characters and should indicate the function of that device Eg Zone1 for a zone pump run sensor or T_Bed for a bedroom temperature sensor Names ARE case sensitive so come up with a system and make sure you enter them the same way on the various configuration screens Page 12 of 32 F Found When the WEL powers up or is reset or the user requests a Bus Scan the software scans the 1 Wire bus looking for all connected
21. ed 5V Reg and V Raw See section 2 1 for more details on the two power signals If all the sensors run in parasite mode neither of the power lines is required The software is able to detect a broken or shorted 1 Wire bus and these conditions are displayed on the Error LED which will flash an error code if there is a problem 2 4 Pulse Counter Flow Watt Meter interface The WEL 3 3 4 has four pulse counter inputs accessible from connector J5 These are typically used for wattmeters or flow meters but they can be used to count a variety of events All four of the counter inputs can be used to measure electrical load and total power consumption but two of the inputs Pulse 1 and Pulse 2 can also be used to simply count pulses daily or monthly Pulse1 and Pulse2 inputs also have programmable de bounce delays to accommodate mechanical switch contacts See section 3 3 for differences between the two types of inputs and typical uses For best power monitoring results we recommend the WNB 3Y 208 P 300Hz WattNode from Continental Control Systems www CControlSys com however any wattmeter with optically isolated or dry contact outputs will work A 1K Ohm pull up is used to sense contact closure on each input To signal a pulse the device being monitored must short one of the WEL pulse inputs Pulse 1 2 3 4 to the common ground GND found on the terminal J5 2 5 Contact closure inputs The WEL is able to sense up to 8 contact closur
22. een the RCM3700 module and the iButton Link module With the board oriented with the Internet jack at the bottom the LED functions from left to right are Pulse 2 Pulse 1 Serial Log Web Post Bus Scan Error Changes state each Pulse on Pulse 2 input The higher the pulse frequency the faster this LED flashes Changes state each Pulse on Pulse 1 input The higher the pulse frequency the faster this LED flashes Flashes if when serial data log is sent out TX port Turns on while transmitting data to external website Default update rate once per minute Turns on while 1 Wire bus is being scanned Should light for one second every six seconds If an error occurs this LED flashes the error code One short flash 1 4 sec for each Unit of the error code One long flash 1 sec for each Decade of the error code Pattern repeats as long as there is an error Eg Error 12 One long flash two short flashes Error codes 1 1 Wire interface failed 2 No 1 wire devices found 3 Short circuit on 1 wire bus 10 Generic network error 11 DNS Server not found 12 Web Post timed out 13 Failed to synch to external time 14 Socket Not Connected Internet or Server error 20 Generic program error 21 Too Many 1 Wire devices Page 5 of 32 3 0 Connecting WEL sensors 3 1 1 Wire sensors The WEL utilizes the innovative 1 Wire network developed by Dallas Maxim This network enables a large number of sensors to be attached to a
23. emote IP to access the WEL from the Internet Note Remote access only works if you configure the Port Redirection on your router to forward all incoming port 5150 TCP IP packets to the WEL s local IP address You will also need to assign a Fixed IP to the WEL Lookup port redirection in your router manual Page 24 of 32 WE L9999 Setup Download the latest User Manual from the Support Files page Note You may have to turn off your browsers cache to enable these admin pages to work properly For Internet Explorer do this by using the TOOLS INTERNET OPTIONS GENERAL menu tab Click on the SETTINGS button and check the Every Visit to the Page box Local WEL Admin 192 168 1 50 5150 Remote WEL Admin 24 131 86 3 5150 Last Post View Live Updates Uu WEL9999 amp Pp jAzzmAn amp li 192 168 1 508 Vv 2 13 amp Ee 08 Date 11 12 20078 Time 12 37 29 amp Zone1 0 0 amp Zone1_D 0 00 amp Zone1_M 0 508 Zone2 0 0 amp Zone2_D 0 00 amp Zone2_M 0 75 amp Zone3 0 0 amp Zone3_D 0 00 amp Zone3_M 1 00 amp Zone4 0 0 amp Zone4_D 0 00 amp Zone4_M 0 00 amp GSHP 0 0 amp GSHP_D 0 008 GSHP_M 1 25 amp Net_In 0 0 amp Net_In_D 0 00 amp Net_In_M 0 00 amp Net_Out 0 0 amp Net_Out_D 0 008 amp Net_Out_M 0 00 amp AirTemp 69 98 Net 0 0 Log Order Edit Date Time Zone1 Zone2 Zone3 Zone4 AirTemp Net Net_D Net_M Graphs Edit Name W H TimeSpan Lines Units Caption AirTemp 900 400 7 Hours Airfemp Green F Air Temp Green Zones
24. es and report these as unique sensor inputs These inputs are typically used to detect pump run or motor run conditions Run inputs are accessible on the J2 terminals To signal a run condition an input Run 1 Run 8 must be shorted to either of the Run Gnd inputs 2 6_ Serial communications The WEL is able to send live sensor data as a RS 232 Serial string via the J4 Terminals box cover has correct signal designation not the PCB The user can select which device s data is to be sent as well as configuring the serial port for a variety of transmission modes The data format is a simple ASCII string with configurable delimiters start and end of message blocks Data can be sent with or without date time and sensor names See section 5 7 for more details about the string format For RS 232 to operate correctly BOTH the GND and SER TX signals must be connected 2 7 LED indicators The WEL has 9 LED status indicators Two of these are located on the CPU LAN module and the remaining seven are on the main WEL carrier board The LAN indicators are Page 4 of 32 Network on Network talk LED on the RMC3700 module next to the cable jack Lights solid Green when an active network cable is attached LED on the RMC3700 module next to the cable jack Flashes Red when data is being sent received by WEL A single Power On indicator is located next to the power input terminal The remaining six indicators are located in a row betw
25. ese terminals are separated from the other terminals to make identification easy The raw input voltage can be AC or DC and should be in the 9V to 12V range A higher voltage can be used up to 24V but this may cause the regulator to overheat A full wave bridge rectifier is used on the PWR Inputs so input polarity doesn t matter ie the two power wires can be connected either way around As soon as power is applied the LED next to the power input will illuminate to indicate that 5V is being generated An inline reset able poly fuse is used to limit input current draw in the event of a component failure This fuse trips at about 1A The WEL provides two different voltages to the 1W bus to power custom circuits These voltages come from two points on the WEL s own power supply The Raw DC supply comes from the input side of the 5V regulator and the 5V is from the output side Either or both of these voltages can be sent along with the 1 Wire bus since both voltages are made available on J3 Each supply line has an inline reset able fuse to limit excessive current that might prevent the WEL from running Note The bus wire sold by OurCoolHouse com only has 3 conductors so the user must choose whether to send the raw or regulated supply If you want access to both supplies a total of 4 conductors will be required Gnd Data 5 DC and Raw DC 2 2 Rabbit CPU A compact CPU core from Rabbit Semiconductor is used to perform all the WEL
26. filter expression Input1 is the value to be filtered and Input2 is the Time Constant The Operator should be set to F The resulting expression is the filtered value The next filtered value can be defined as FilterNext FilterLast SensorValue FilterLast TimeConstant Or FilterNext FilterLast Input1Value FilterLast Input2Value In the extremes a filter with a TimeConstant of 1 0 will react instantly but a filter with a TimeConstant of 0 0 will never change So all valid TimeConstant values fall between 0 0 and 1 0 Sample and Hold In many systems the value of a sensor is only valid when something else is running eg a solar panel circulator pump When the pump is not running the temperature being measured will slowly fall to ambient This may cause charts to be hard to interpret One way to deal with this problem is to use an expression to multiply the sensor values with the pump s RunMonitor This will cause the resultant value to jump between Zero when the pump is not running and the live temperature when the pump is running A different way to deal with this issue is to use the Sample and Hold expression operator to maintain the last valid sensor value when the pump turns off This can be done by using the S operator Input1 is the device to be sampled and Input2 controls when the value sampled and when it is held If Input2 is TRUE then the value of Input1 flo
27. g screen If you are ready to delete devices click the Disable Scanning button The WEL will be immediately put in idle mode and shortly thereafter the Bus Poll LED on the WEL will start blinking rapidly This is a visual reminder that you are no longer posting data and that you should re enable scanning as quickly as possible Now the WEL will display a new screen that has an Enable Scan button as well as Delete buttons for each of the available devices Physical sensors that contain more than one device must be deleted as a group so next to each Delete button is text indicating how many device slots that button will delete Page 22 of 32 Each time you click a Delete button the screen will refresh to show the new delete list WARNING Make sure you Enable Scanning once you are done deleting devices Note There is no point in deleting a 1 wire device that is still present on the bus since the next time the WEL is reset it will just add it back to the list 5 10 Soft Boot the WEL If you ever need to reset the WEL but don t have access to the physical hardware during a remote connection then you can use this page to force a software re boot This will have the same effect as a hardware reset It will cause the WEL to reload its program from flash and start with a clean slate Since this is not something you want to happen by accident the page requires a second button click to confirm the reboot Once a reboot has
28. ge Assign Simple Operator to ID 50 Assign ConstanttoID 50 Expression Name Virtual Device DeltaTraw Constant Name Virtual device DeltaTraw Equals Data Source Equals Ljive D ay M onth Constant Value m MUST be set to a number before saving Input Device 1 s Name HighTemp up Lt gt Save Constant Operator amp E Note use and in place of lt and gt Input Device 2 s Name LowTemp DIM Save Expression Add New Expression Dev Expression Name Edit 50 d23L d21L DeltaTraw Edit 51 a50L d 15L DeltaT Edit E s You choose simple operator or constant by filling in the required fields and then clicking the appropriate Save button Simple Operators In the example above the expression s name is DeltaTraw and the goal is for the expression to calculate the temperature differential across a heat exchanger The first text box is the Expression Name This name must be unique and it will appear on the Device List The next text box is the name of Input 1 the first term of the expression in this case HighTemp This name must be the name of an existing device In addition there is also a box to indicate if you want to use the Live value of this input or either of the Accumulated values Next comes the operator to be used for this expression In this case the minus sign has been entered F
29. han then _D and _M will hold the minimum sensor value for the day and month The problem is that there are several times when the value of a sensor may show up as zero for some unrelated reason and we don t want to set the minimum to zero incorrectly Examples of this are when the WEL first powers up if the sensor has not yet been polled successfully its value may be zero Likewise if you are zeroing out an expression if a certain pump is not running you don t want to misue that zero as the sensor minimum The easy way out is that the WEL ignores a sensor value of zero when it comes to testing minimums Never fear if your centigrade temperature sensor passes through zero you will probably see 0 1C and 0 1C so missing 0 0 won t be a huge problem Sample S When using the Filter and Min Max accumulations it s sometimes useful to be able to seed the accumulated value with the current sensor value eg so that the monthly temperature filter starts at the current temperature rather than 0 To do this set the device accumulation to S for at least one full minute Sometime during that minute the WEL will sample the current sensor value and load it into both the Daily and Monthly stored values Now set the device back to whatever accumulation you d like to use This is similar to setting the accumulation to N for None for at least one minute which will reset the accumulation back to zero Wind W Although don t go as
30. im Dallas Currently the WEL supports 5 different temperature sensor types These are the older DS1820 and the newer DS18S20 DS18S20 PAR DS18B20 and DS18B20 PAR precision temperature sensor families Page 6 of 32 The most minimal configuration for a 1 Wire device is the parasitic power mode where the device steals power from the data line In this mode the device s VDD pin must be tied to the GND line for noise immunity Special versions on the DS18S20 and DS18B20 devices are sold where this connection is made inside the device thus eliminating any need for external wiring The PAR suffix is added to the part number to indicate this feature Here are some sample device pin outs DALLAS BOTTOM VIEW TO 92 DS18B20 3 2 Current Switch The Current Switch CS from CR Magnetics is another popular sensor for the WEL As it s name implies the CS is a switch that turns on when it senses current This is a great way to detect when a device like a pump or heater element is on The beauty of this kind of sensor is that there is no electrical connection with the actual device being monitored so it s very safe One of the power conductors of the device being monitored is passed through the hole in the CS When more than 350ma of AC current is detected in this wire the CS closes an optical output which can be detected any of the 8 run monitor inputs on the WEL Each CS has two output wires The black
31. inally the name of Input2 the second term of the expression is entered LowTemp along with it s source letter L So reading this expression from top to bottom DeltaTraw HighTemp live LowTemp live After entering the fields or making changes the Save Expression button must be clicked In addition to the basic four math operator there are some special operators Page 17 of 32 Boolean The WEL is able to interpret a sensor or expression as a boolean logic level If the current value is less than 0 5 it is assumed to be FALSE otherwise it s assumed to be TRUE Expressions can be used to combine device values using AND OR logic To detect when two devices are BOTH TRUE use the 8 character as the operator Use the operator to detect when EITHER one is TRUE Comparison The WEL can compare two device values and generate a TRUE FALSE condition indicated by setting the expression to 1 or 0 Use the operator to test if InputDevice1 is Greater Than InputDevice2 Likewise use to test for the Less Than condition Filters The WEL can remove the noise from a device value by applying a simple filter to it Each six second poll the filter looks at the difference between the sensor value and the filter output and applies a fraction of that change to the filter value The specific fraction that is applied is set by the filter s Time Constant When setting up a
32. inst moisture intrusion it s impossible to place the sensor chip in direct contact with the surface to be measured but an opening on one side has been provided to permit better heat transfer The first step in getting a good reading is to provide a SOLID thermal path from the item to the sensor In many cases the item to be measured is a copper water pipe In this situation it s desirable to locate the sensor as close to the heat source as possible For example if you were measuring the output temperature of a solar collector you d want the sensor right at the output of the panel Ideally you want the sensor located on a section of pipe that has turbulent flow The best place is just AFTER a bend in the pipe You want to ensure good thermal conduction with the pipe so you should clean off any surface corrosion or gunk There are several options for producing a solid thermal contact A simple way is to use a hose clamp to strap the sensor to the pipe If you added some heat sink compound under the sensor it would be even better Cable ties would also work but it s hard to get them really tight so the contact might not be as effective Another option would be to use thermal epoxy to glue the sensor to the pipe Try to get as much of the sensor in contact with the pipe as possible Once the sensor is attached it s a good idea to wrap several turns of the sensor wire around the pipe before connecting it to the bus This insure
33. is page configures the string format and the data content Jl m Page 20 of 32 The following Serial String attributes can be set on this page Log Interval The interval between serial packets can be set for short or extremely long intervals Seconds to days If the period is set to 0 then serial logging is disabled Baud Rate Baud rates from 1200 to 115200 are available Mode Four transmission modes are available These are a combination of two options Include Date time and Include Names Using the settings shown on the example image above samples of the four formats are shown below Date Time Names The most verbose format WEL Date 11 12 2007 Time 09 53 58 Zonel 0 0 Zonel D 0 0 Zonel M 0 5 AirTemp 68 9 Date Time No Names EL 11 12 2007 09 54 29 0 0 0 0 0 5 68 9 5 Names WEL Zonel 0 0 Zonel D 0 0 Zonel M 0 5 AirTemp 68 8 No Names The most brief format WEL 0 0 0 0 0 5 68 9S Header Any 7 printable characters may be added at the start of every transmission Tail Any 7 printable characters may be added at the end of every transmission This will be before any final EOL characters Delimiter ASCII This is the ASCII value decimal for the character you want to use to separate the device values Suggestions are 44 comma or 9 tab EOL Char1 ASCII This is the ASCII value decimal for the first End Of Line character to be put at the end of the transmission A typica
34. l Malone Mr Phil com Once you reach the Owner Setup page add it to your browser Favorites You ll be back here often The Setup Overview page provides a quick snapshot of your current configuration It shows the last post that was received from your WEL how you want your data logged what you want displayed on your System Image and what graphs you want to be generated It also contains links to other pages where you actually edit these various settings A sample Owner Setup page is shown below Notice that each section has a link called Edit Click this link to change the information in the adjacent table You will be taken to a new page with one or more text entry fields The sub menu links in the left hand sidebar take you to these same pages Note This next sentence is probably totally wasted on people just like me but I ll try it anyway If you have a question about what to enter on any particular page scroll down and READ the Tips at the bottom of the page hate typing so if I ve gone to the trouble of including a tip then there must be a really good reason Trust me can read your mind Plus if need to add more help info l Il do it there rather than in this document So don t say didn t tell you 6 2 Local and remote IPs One cool thing on the Setup page is a display of the WEL s local and Remote IP addresses Click on the local IP to access the WEL from within its Local Area Network Click on the R
35. l value would be 13 CR EOL Char2 ASCII This is the ASCII value decimal for the second End Of Line character to be put at the end of the transmission A typical value would be 10 LF All the available devices are then listed on the page Place a Y in the box next to a device if you want it included in the serial stream Al devices named and un named are shown in the list because there is no requirement for a device to have a name in the serial log If a device has accumulated values associated with it these will also be output 5 8 Set Date and Time The WEL has a real time clock that is used to timestamp data posted to the web and through the serial port This clock should be set when you receive the WEK but it may be set to the wrong time zone This page can be used to set the date and time Simply enter the appropriate information and click Submit Page 21 of 32 5 9 Delete unused devices Once you ve been using your WEL for a while or after doing some experimentation with expressions or different sensors you may have some devices on the main Device List that you no longer need But the WEL is designed to never forget a device so you need to go out of your way to force the WEL to remove these devices Since the system is constantly referring to the Device List for polling and posting data you first need to disable scanning The system knows this and when you first go to this page it will present the followin
36. lic web page that includes your system image and all your charts Its address is based on your Site ID The URL format is http Awww WELServer com WELXXXX Where XXXX is your Site ID While making changes to your setup you may want to keep this page open in a new window to see the results of your settings Send this URL to your friends and colleagues to show off your data Since this is a public page images from this page can also be included in your own custom website Just copy the URL from the name above an image and use it to define the image location in your own web design tool Page 28 of 32 Appendix A Device Type codes When a physical device is added to the 1 wire bus it will show up as one or more logical devices on the sensor list Each device has an address and type The following list shows the meaning of each device type Type Function Additional channels 01 Local Run monitor input 0 02 Local Pulse counter input 0 03 COP calculation 0 06 DS2423 Dual counter Channel B 0 14 Additional Unfiltered channel 0 15 Additional Filtered channel 0 16 DS18S20 Temperature Sensor 0 18 DS2406 Digital Input 0 29 DS2423 Dual counter Channel A 0 32 DS2450 Quad A D Converter Not recommended 3 38 DS2438 Battery Monitor Humidity Solar 1 40 DS18B20 Temperature Sensor 0 41 DS2408 8 Channel Digital I O 7 240 Expression 0 Page 29 of 32 Appendix B C
37. lue to help verify that the calibration is reasonable In some temperature sensor applications where an accurate delta T reading is required it may be necessary to perform an accurate calibration on the sensors One way to do this is to log the values from the two sensors when they are attached to the same metal object Then average the values to determine the difference between the two sensors This difference can be added to the offset to the low sensors to bring their two values in line OCH WEL Calibrate 1 Wire Devices See bottom of page tips on scale and offset values RS 1 1 000000 0 000000 Y 1DA2600B00000074 29 Net_In 1 000000 0 000000 Y 000000 0 000000 000000 0 000000 Dev Address Type Name Scale Offset F Raw Scaled O RI l Zone1 fiooo000 fo 000000 y o 000000 1 000000 1 2 1 Zonez 1000000 ooo0000 Y 0 000000 1 500000 2 ks 1 Zone3 fr000000 fo 000000 Y 0 000000 2 000000 3 RA 1 Zone4 1 000000 0 000000 ya o00000 0 000000 4 RS 11 esme r 000000 fooowo0o y o oo0000 2 500000 5 R6 1 r o00000 fo oo0000 Ylo oo0000 0 000000 6 R7 1 1 000000 fo o00000 Y 0 000000 0 000000 7 1 000000 o 8 o 9 o i 1DA2600B00000074 6 Net_Out 1 000000 0 000000 p 000000 0 000000 O 28BC3E1A010000CA40 AirTemp 1800000 32000000 Y 23 18749873 737495 y Jd8L d9L 1240 Net 1 000000 0 000000 y 0 000000 0 000000 Submit Devices lt 50 Reset
38. nutes since the last WEL reboot will wrap at 32768 Page 32 of 32
39. ompatible Third Party 1 Wire devices The following devices are compatible with the WEL 1 wire and the WEL software 1 Devices based on Maxim s DS1820 DS18S20 PAR or DS18B20 PAR temperature sensors eg Ruggedized temperature probe from www embeddeddatasystems com 2 Devices based on Maxim s DS2438 Battery monitor eg Hobby Boards com humidity solar sensor http www hobby boards com catalog product_info php products id 57 Note this sensor will show up as two devices The first device is type 38 and corresponds to the measured Voltage The second device is type 15 and is the measured current 3 Devices based on Maxim s DS2423 Dual counter eg Hobby Boards com Dual Counter Board http www hobby boards com catalog product_info php products id 42 Note This sensor will show up as two devices Counters A and B will show up as types 29 8 6 respectively 4 Digital Input devices based on Maxim s DS2406 l O port Note The WEL only interrogates the A channel of this device The optional B channel is ignored Page 30 of 32 Appendix C Temperature Measurement tips With economical temperature sensors like the ones used by the WEL it is difficult to obtain highly accurate temperature readings However if due care is taken when attaching sensors it s possible to get very respectable readings The Encapsulated sensors sold by OurCoolHouse are designed to be robust and reliable Since the sensors have been sealed aga
40. presented on a series of web pages hosted directly on the WEL as well as posted to the WELServer com Website via a standard 10 baseT Ethernet connection WELServer com combines the live data with graphic images to generate system snapshots that can be displayed on any user s website Live data is also stored in monthly log files and used to generate trend graphs Logs can be downloaded by users and imported into data processing packages like Excel This manual describes WEL units that use the Rev 3 3 4 circuit board and Rev 2 17 WEL software For earlier or later versions of the board or software go to the WELSever com support files page and locate the correct User Manual version The previous picture shows the WEL 3 3 Unit in its preferred orientation When the board is mounted to a wall in an enclosure the six status LEDs should be located at the top of the board and the Ethernet connector at the bottom This orientation leaves the top surface of the enclosure free from holes The version of the WEL is marked on the main circuit board directly under the LAN connector A WEL 3 3 board can also be identifiable by the stand alone 4 terminal 1 Wire bus connector Page 2 of 32 2 0 Hardware The WEL comprises several hardware elements These are described below 2 1 Power Supply The WEL uses a simple analog voltage regulator to generate the required 5V Unregulated raw voltage is applied to the board though the J1 terminals Th
41. racters Spaces cannot be used in a name and if they are the system will replace them with an underscore _ character This page has a Scan Bus button which can be used to force the WEL to rescan the 1 wire bus to look for new or missing devices When first wiring an installation use this screen to quickly identify and name new devices as you connect them up for the first time The process is as follows 1 Add a sensor to the bus 2 Click Scan Bus to get the sensor s address 3 Enter a name for the new device that appears at the end of the list Repeat 1 3 for all sensors Page 13 of 32 Accumulations Each device can also be assigned a single accumulation letter This letter defines if how hourly usage data should be generated Notice on the page below that devices 0 4 have accumulation set to B so Both Daily and Monthly accumulation are enabled However devices 8 and 9 have accumulation set to lower case b which means they also have both accumulations enabled but their values will be reduced by 1 000 for usability as KWH When posting accumulated data to the Web the WEL adds a _D or _M suffix to the end of the base device name In the example below the WEL will also post a value for GSHP_D the daily hour total and GSHP_M the monthly hour total Clear all device Names lt lt Danger Print out this page before clearing device names In the beginning there was only one use for accumul
42. s User Manual Many of the screens changed when the software moved from 2 12 to 2 13 Verify that the Network mask and Gateway address will permit the WEL to access your broadband Internet connection via your router or shared PC Page 10 of 32 Below the network information is Web Posting and Bus Scanning status information Scanning and Posting must be shown as active for the WEL to read the 1 wire bus and post data to the central server The ONLY time scanning is disabled is when you the user disable it in order to delete some unwanted devices If scanning has been disabled there will be a red warning and a button that can be used to re enable it The snapshot above shows a typical set of status information The last Web post shows a 200 OK message and the 1 Wire status is Devices Found Unlike the prior WEL3 2 hardware the WEL 3 3 hardware has a dual counter chip on the board itself so there should ALWAYS be a device found on the 1 wire bus The Error Status field will display the current and previous error code A code of 0 means that there is no error present See section 2 7 for a full list of error codes The last item on the Error Status line is an indication of the maximum number of devices or device slots that this WEL supports Prior to Software version 2 13 the WEL only supported 100 Devices This has now been expanded to 128 devices This increased device capability does not mean that the WEL can now support 1
43. s that the sensor wire is at about the same temperature as the pipe so the wire doesn t pull heat away form the sensor and affect the readings Finally the whole assembly should be insulated from the ambient air with some good pipe insulation Given these precautions and typical water temperate rate changes the readings from your sensors should all be consistent within a degree or so Page 31 of 32 Appendix D Diagnostic Data included in WEB post Several pieces of diagnostic data are included along with your device data in the packet that gets posted to the WELserver com website You can see these magic items on your online web admin screens and you may be wondering what they are They are typically a pair of matching upper lower case characters They were added primarily to help me and you to diagnose any odd behaviors that may occur from time to time It may be helpful to include some of these values in your log if you want to keep track of them Their meanings are as follows Uu Your WEL user ID used for authentication Pp Your WEL password used for authentication li Your local IP address Vv Your current Software version Ee Number of Found devices that are currently not reporting correctly _Cc The current WEL error code as displayed on the Red Error LED _LI The last WEL error code prior to the current one if one exists now _Gg Number of minutes since the last error will wrap at 32768 _Bb Number of mi
44. single twisted pair cable The term 1 Wire is somewhat erroneous since the network actually utilizes 2 wires but since one of these is a simple ground wire the other 1 wire supplies both power and communications All 1 Wire devices have a unique 64 bit address that is used to differentiate the various sensors on the bus Since this address is cumbersome to use the WEL provides a means for assigning more meaningful names up to 16 characters to each sensor eg T1 T2 P2 Since all the sensors are physically identical names are assigned by adding sensors to the net one at a time As each sensor is added it shows up as an un named device that can then be named Address Name pairs are stored on the WEL in Flash memory so once a name is assigned it sticks to that device The most reliable way to hook up your 1 Wire sensor array is to take one long twisted cable and run it from the WEL past all the sensors This is what provide in the basic WEL Starter Kit In this case the 1 Wire bus is a 40 twisted triad three wires with the default WEL color code Black Ground Yellow Signal Red V The third wire Red is provided to power more elaborate 1 wire sensors These sensors require typically require more current than can be supplied by the normal 1 wire bus The WEL is able to provide either regulated 5V or unregulated 9V on this third wire Here you see the Bus cable connected to the WEL using the standard
45. so that you can easily add numeric sensor values Here s some example links of images WITH their sensor values http WELServer com WEL1000 system png lt lt 640 x 480 http welserver com WEL0043 system png lt lt 1024 x 1024 pretty big Your goal is to create an image without the sensor values upload it to your Owner Setup page and then tell the page where you want the sensor values put You ll need to create an image using the PNG format like gif and then upload it using the Realtime System Image Upload button on the Setup page The other factor is that its REALLY important that the final image has a palette of only 255 colors Reduce the png down to 255 Web Safe colors NOTE I ve found that if your image has more than 256 colors then the live text does not get drawn in the correct color So if your text is a funny color it s probably because your image is not using a 256 color or less pallet Once you ve uploaded the image it will appear at the bottom of the Setup Overview page in its raw form The annotated image will appear after the raw one once your WEL has posted new data After uploading the image use the Realtime Sensor Text Edit link to start adding values to the image Any sensor value being posted by your WEL can be added to the image including the post date and time Data is added to the image automatically by the WELServer website so you need to tell the system what device names to
46. ting All the LEDs light up in sequence starting with the first green LED and working over to the RED led This takes about a second All the green LEDs then go off leaving the red LED lit for about ten seconds while the boot program is decompressed At the end of boot loading the red LED will go off At this point the WEL is running and will begin bus scanning The Green LED near the Network Connector should go on and stay on This indicates that the WEL has successfully activated the TCPIP network You remembered to plug the cable in right To view and update the internal workings of the WEL you must now configure a PC on the same LAN to be able to access the WEL s local web server 4 2 Locating the WEL s IP Address The WEL is an Internet appliance To communicate with other devices it needs an Internet Protocol Address or IP Address You need to know the WEL s IP address so that you can configure it using your PC s Internet browser IP Addresses are represented by a series of 4 numbers separated by periods Each number is between 0 and 255 The WEL s favorite IP Address is 192 168 1 50 This address can operate with most broadband routers but it s not foolproof Devices like the WEL can be given a Fixed IP or they can obtain them Dynamically If you re a net weenie you ll probably want to assign your WEL a fixed IP because you can and it makes it easy to remember If you re a net novice you ll probabl
47. tion page is used to set general properties for this WEL installation to index WEL9999 i www WelServer com A A I I a I a e ea aoi cgi bin WEL_post cgi Your Location Here A A A A a Each WEL has its own unique Site ID and Password that is used for posting data These values will be set on your WEL before it s shipped The Host Domain and Post page are also set before shipping but these can be changed if you want the WEL to post you your own Web Page The last three fields are for defining some additional Virtual Devices Internal Pulse counters are used for Pulse1 and Pulse2 inputs and these are described in section 3 3 If these counters are required set the desired quantity in this box and the WEL will add them to your Device List Each counter causes three devices to be created These have addresses of M Load M Day and M Month where is either 1 or 2 M Load will indicate the number of pulses per minute M Day will accumulate pulses for the day and M Month will accumulate pulse for the month These devices will be configured with default calibration values for the WNB 3Y 208 P 300Hz wattmeter using 100A CTs indicating load in Watts and Accumulated power in KWH You can change the scale to calculate any other unit based on a units per pulse conversion On these two pulse inputs you can configure a minimum required delay between pulses On high speed digital inputs this delay should be kept low 0 2 ho
48. tions It doesn t make sense to Accumulate most devices so in those cases decided to use this user settable attribute to turn on other processing These aren t actually accumulations but they are still posted to the web as devicename_D and devicename _M or _D or _M for short Filters F f Many users have asked for daily and monthly averages But to do these properly would take more memory than the WEL has to spare As a compromise I ve added custom filters set up with very long time constants that can be used to approximate daily and monthly averages If the accumulation letter is set to F then _D and _M will correspond to a daily and monthly filter An accumulation of f will result in _D and _M correspond to a 2 hour and 8 hour filter The advantage of using accumulations to do filtering instead of expressions is that the filter value is maintained in flash memory so the filter is NOT reset by a power outage or reboot Min Max The WEL can maintain the Min or Max value of a device over a day or month Maximums are simplest so l Il cover them first If you set the accumulation to y think squiggly greater than then _D and _M will hold the maximum sensor value for the day and month At the beginning of each period the Max is set to the current sensor value since it is the Maximum so far OK that was easy but Minimums are a bit trickier If you set the accumulation to think squiggly less t
49. wever if a slower mechanical device is being monitored eg a 1 Pulse Gal flow meter then a substantial pulse delay can be entered 50 200 to eliminate any mechanical switch bounce COP calculations were added before expressions were available COPs are now unnecessary and this field is just included here for existing users to disable their COPs once they have converted them over to use expressions Page 19 of 32 5 6 Configure IP Addresses This page enables the user to change the current IP addresses for the WEL This page can be used as an alternative to the LocatelP program for making these changes The factory default setting for the WEL is to have an IP address of 0 0 0 0 which forces it to request a dynamic IP via DHCP If you want the WEL to use a Fixed IP set it here Remember that if you change the IP address you will need to enter that new IP into your browser once you hit Submit To get access to the Internet you also need to set the Gateway IP This could be your Cable modem Network Router or Internet Sharing PC The default for this is 192 168 1 1 which is a common router setting Finally you may need to enter the IP of your ISP s Domain Name Server DNS If you change any of these settings and hit submit the WEL will reset itself to load the new settings 5 7 Configure Serial Logging The WEL is able to transmit an RS 232 serial string with select device data Data is sent with 8 Data bits 1 Stop Bit No Parity Th
50. ws through to the output of the expression However if Input2 goes FALSE then the expression output does not change so it effectively holds the last good value of Input1 Constants To create a device to hold a constant number for calculation purposes the number would be entered in the Constant Value box on the right hand gray area and Save Constant would be clicked Constants are useful for conversion factors eg BTUH to KWH or to hold values used in calculations like 7 days in the week or 0 10 dollars per KWH Limits Any number of expressions may be created up to the maximum limit of 128 devices Multiple simple operators may be combined in series to form more complex expressions and each expression may utilize the device s Scale and Offset calibration values The key issue to remember is that each expression must have a different name Once an expression is saved the Address field for that device is used to display a mnemonic for the expression This acts as a reminder to you for what Page 18 of 32 that expression does The mnemonic indicates the IDs for the two input devices as well as the operator eg d8L d9L If an invalid device name was entered the Device ID will be shown as 255 If you ever delete the device that an expression refers to the formula will fail to operate and if you view it s mnemonic you will see an invalid device ID of 255 5 5 System Configuration The System Configura
51. y want your WEL to get it s own IP thereby eliminating the need for you to assign one Unless you request a specific IP when you order your WEL it will come set up to obtain a dynamic IP So once it s up and running it will implicitly know how to talk out on the net but you won t know it s IP You will need to search it out and determine its IP address so you can talk to it You will use a program called LocatelP exe to do this You can download this program from the WEL Support Files page of the WEL support website http www WELServer com support htm Load the program onto your PC and run it It will immediately search for the WEL and once it finds it will display its network parameters including its IP address See below Page 9 of 32 Rabbit Board IP Locate Configure xj Hit Search to locate boards Configure to change settings Using address 0 0 0 0 port 4854 to find remote boards a Response from 192 168 1 50 OCH Web Energy Logger Mac addr 00 90 c2 cc b6 4a Mask 255 255 254 0 Gateway 192 168 1 1 Search Complete In the example you can see that the program got a Response from 192 168 1 50 This is the WEL s IP address You ll also not that the Gateway address is 192 168 1 1 this is typical for many network routers like Linksys If need be these addresses can be changed by clicking the Configure button and entering the desired addresses If you run LocatelP and it doesn t find your
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