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WEB-TEMP User`s Guide

1. Changes to network configuration should only be performed by your network administrator or computer professional Check cached information When your network configuration changes for example when you change the static address on one of your devices you may have obsolete information on PCs that have previously accessed your device You may be able to update this information simply by disconnecting the network cable from the PC on which the problem exists and reconnecting it After a short time the cached information should update If this doesn t work the following procedures may help Deleting a NetBIOS table entry If NetBIOS is enabled nbtstat c will provide a list of names and IP addresses If the webtc name is listed check the associated IP address If it is different try typing nbtstat R to purge the NetBIOS cache Deleting an ARP table If you suspect that two devices on a network are assigned the same IP address you can delete the ARP table Address Resolution Protocol Do the following 1 Open a Command Prompt DOS window 2 Enter arp d followed by the address found in step 2 192 168 0 102 for example and press Enter The ARP table will update with the current IP addresses assigned to devices on the network Getting help If you are unable to communicate with the WEB TEMP first contact your network administrator or computer professional to verify that you are using the correct TCP IP network s
2. CH1 sensor input 33 C6L CH6 sensor input 8 C1L CH1 sensor input 34 C6H CH6 sensor input 9 AGND Analog ground 35 NC No connect 10 IA CHO CH1 current excitation return 36 ID CH6 CH7 current excitation source 11 IB CH2 CH8 current excitation source 37 IC CH4 CH5 current excitation return 12 NC No connect 38 AGND Analog ground 13 C2H CH2 sensor input 39 CSL CH5 sensor input 14 C2L CH2 sensor input 40 C5H CH5 sensor input 15 4W23 CH2 CH3 4 wire 2 sensor common 41 IC45 CH4 CH5 2 sensor common 16 IC23 CH2 CH3 2 sensor common 42 4W45 CH4 CH5 4 wire 2 sensor common 17 C3H CH3 sensor input 43 C4L CH4 sensor input 18 C3L CH3 sensor input 44 C4H CH4 sensor input 19 AGND Analog ground 45 NC No connect 20 IB CH2 CH3 current excitation return 46 IC CH4 CH5 current excitation source 21 5V 5V output 47 NC No connect 22 PU D Pull up down for digital outputs 48 GND Digital ground 23 DIOO Digital Input Output 49 DIO7 Digital Input Output 24 DIO1 Digital Input Output 50 DIO6 Digital Input Output 25 DIO2 Digital Input Output 51 DIO5 Digital Input Output 26 DIO3 Digital Input Output 52 DIO4 Digital Input Output Make no connection to terminals labeled NC Use 16 AWG to 30 AWG wire for your signal connections Tighten screw terminal connections Sensor input terminals COH COL to C7H C7L The WEB TEMP supports the following temperature sensor types Thermocouple
3. channel on the WEB TEMP 16 WEB TEMP User s Guide Installing the WEB TEMP System Info tab summarizes the current network settings set for the WEB TEMP and provides a button that when pressed flashes the POWER COMM LED on the device Settings on this tab are not configurable via the web interface use InstaCal to configure network settings Configuration tab provides separate menu options for configuring your temperature digital and alarm options To change configuration settings enter the user name default is webtemp and password default is mccdaq set for the device and click the Log In button The user name and password cannot be changed from the web interface you must use nstaCal to change them o Temperature menu option Use the options on this page to set the sensor category and connection type for each temperature channel pair The factory default configuration is Disabled The Disabled mode disconnects the analog inputs from the terminal blocks and internally grounds all of the A D inputs This mode also disables each of the current excitation sources Any channel you don t intend to use should be left disabled o DIO menu option Use the options on this page to set the direction of each digital I O channel and value of each digital I O channel configured for Output o Alarm menu option Use the options on this page to set up the temperature conditions to activate an alarm and the output state of
4. configuration explained below If a digital bit is set up as an alarm the bit is configured for output and assumes the state defined by the alarm configuration Pull up down terminal PU D All digital I O lines are connected through 47k to the PU D pin which is floating by default For a pull up configuration connect the PU D pin to the 5V pin For a pull down configuration connect the PU D pin to the GND pin Ground terminals AGND and GND The analog ground AGND terminals pins 9 19 28 38 provide a common ground for the sensor input channels The AGND pins are isolated from the GND pin and from earth ground Thermocouple sensors can connect to voltages that are referenced to earth ground as long the isolation between the AGND pins and earth ground is maintained The ground GND terminal pin 48 provides a common ground for the digital I O channels The GND pin is isolated from the AGND pins and from earth ground Power terminal 5V The 5V output terminal is isolated 500 VDC from the analog input terminals Caution The 5V terminal is an output Do not connect an external power supply to this terminal or you may damage the WEB TEMP and possibly the computer 21 WEB TEMP User s Guide Signal I O Connections Thermocouple connections A thermocouple consists of two dissimilar metals that are joined together at one end When the junction of the metals is heated or cooled a voltage is produced that correl
5. forward incoming traffic from the public IP address to the HTTP port port 80 of the private static IP address 14 WEB TEMP User s Guide Installing the WEB TEMP Note If your network has an HTTP server already running network address translation NAT allows different ports to redirect to the WEB TEMP on port 80 Contact your network administrator or computer professional for more information Note To access the WEB TEMP using nstaCal and the Universal Library configure the firewall to allow incoming traffic to the UDP port port 54211 by default 3 At the client LAN open your web browser and enter the public IP address recorded in step 2 above Note To access the WEB TEMP by name a DNS entry must be assigned The WEB TEMP Measurements page opens You can view current measurement data from this page A log in name and password are required to change configuration settings Accessing the WEB TEMP using nstaCal and the Universal Library InstaCal cannot automatically detect a WEB TEMP that is installed on a different subnet To change configuration settings with JnstaCal or communicate with a WEB TEMP using programs written with the Universal Library manually add the public IP address to InstaCal InstaCal can then search the public address provided for the WEB TEMP We recommend that the port number be set to 542 for use with InstaCal and the Universal Library Port 80 is used for the web interface For information o
6. network settings on the WEB TEMP When held for 3 seconds the POWER LED will turn off for a short time indicating a reset is in process When the POWER LED turns back on reset is complete and the factory default network settings have been restored 30 Chapter 5 Ethernet Troubleshooting There are typically only two reasons why you would be unable to communicate with the WEB TEMP and access the web interface The WEB TEMP is configured incorrectly or is operating incorrectly The network is configured incorrectly Though the WEB TEMP is functioning normally you are unable to communicate with it over the network Though a detailed treatment of debugging the network is beyond the scope of this manual there are a few things to try to determine if the problem experienced is a problem with the WEB TEMP or with the network configuration Perform the procedures below to verify the physical and network connections Contact your network administrator for issues with your network configuration Measurement Computing provides technical support for WEB TEMP connectivity and operation only For networking issues contact your network administrator or computer professional Check the WEB TEMP status LEDs 1 Verify the external power connection When external power is supplied to the WEB TEMP the POWER COMM LED illuminates steady green o Ifthe POWER COMM LED is off check the power cable and the socket that the cable is plu
7. of objects on the screen such as buttons text boxes and check boxes For example 1 Insert the disk or CD and click the OK button italic text Italic text is used for the names of manuals and help topic titles and to emphasize a word or phrase For example The JnstaCal installation procedure is explained in the Quick Start Guide Never touch the exposed pins or circuit connections on the board Where to find more information The following electronic documents provide helpful information relevant to the operation of the WEB TEMP MCC s Specifications WEB TEMP the PDF version of the Specifications chapter in this guide is available on our web site at www mccdag com pdfs WEB TEMP pdf MCC s Quick Start Guide is available on our web site at www mccdag com PDFmanuals DA Q Software Quick Start pdf MCC s Guide to Signal Connections is available on our web site at www mcecdag com signals signals pdf a MCC s Universal Library User s Guide is available on our web site at www mccdag com PDFmanuals sm ul user guide pdf MCC s Universal Library Function Reference is available on our web site at www mccdag com PDFmanuals sm ul functions pdf MCC s Universal Library for LabVIEW User s Guide is available on our web site at www mccdag com PDFmanuals SM UL LabVIEW pdf WEB TEMP User s Guide this document is also available on our web site at www mccdag com PDFmanuals WEB TEMP pdf For installation informa
8. received Factory reset button When held for 3 seconds the POWER LED will turn off for a short time indicating a reset is in process When the POWER LED turns back on reset is complete and the factory default network settings have been restored Current excitation outputs Ix Table 21 Current excitation output specifications Parameter Conditions Specification Configuration 4 dedicated pairs IA CHO CH1 IB CH2 CH3 IC CH4 CHS5 ID CH6 CH7 Current excitation output ranges Thermistor 10 pA typ RTD 210 uA typ Tolerance 5 typ Drift 200 ppm C Line regulation 2 1 ppm V max 42 WEB TEMP User s Guide Specifications Load regulation 0 3 ppm V typ Output compliance voltage 3 90 V max relative to AGND pins 9 19 28 38 0 03 V min Note 18 The WEB TEMP has four current excitation outputs with IA dedicated to the CHO CH1 analog inputs IB dedicated to CH2 CH3 IC dedicated to CH4 CHS and ID dedicated to CH6 CH7 The excitation output currents should always be used in this dedicated configuration Note 19 The current excitation outputs are automatically configured based on the sensor thermistor or RTD selected Environmental Table 22 Environmental specifications Operating temperature range 0to55 C Storage temperature range 40 to 85 C Humidity 0 to 90 non condensing Mechanical Table 23 Mech
9. sess oes he Hoven issuer ote eae neck cessed oe E Syst comes E E ictus External components eiserne sa da gens Cosson do wins cb eel a EEE RE SE deausvescbauheuecnchvews cb anew DE E ES Screw terminmal AEO a E E EE E E E E JEANA 010 S AAEE A AA E EE E E ETEN External power connector POWER COMM LED ean en ania ean EEA R R ER E E E EA E E RR E OE TINK ACTIVIRY LED wise aaa A N E e E E E EN A AE aE Digital logic voltage switch Factory default reset button sesse seen eee oe ee ays eet Stet Hee Moe bee Mn hE a ed ee 30 Chapter 5 Ethernet Troubleshooting ccccccccesececeeeeeseeeeneeeeseaeseseaeeneeeeeeaeeesaaesasneeeeeeeesaaesasaeeeneeeesseeaseaesaseaeeees Check the WEB TEMP status LEDS 0 0 cccccccceseseseseseseseseseseseseceseseceseseseseseseseseseseseseseseseseseseseseseseseseseeees Check the network settings on the computer Check whether DHCP is enabled on the network server Verify that the computer is connected to the network eee eceseeessecseesecsereeceseeecsaecesesecseesecnaeeeesaeeeeesesaeeeeens 32 Verify the network path to the WEB TEMP 00 0 0 cceessesscseesecsseeecssecseesecnevsccnaeeecsaecesesecaeeseenaseeesaeceeaesaeeeeens 33 Verify the network path to a remote WEB TEMP 00 ceeececssscsseeecesecseesecsersccsseeeesaecasesecaeesecnaseesaeceeesesaeeeeens 34 Check cached information ccccesceesecsceeseeeeeeeeeeeeeeeeeeeceseeeseenaecaeenee Deleting a NetBIOS table entr
10. tSiniin i renn nR EE E EEEE AE EEE ana cageeanniessae dean fetes eey 41 Network protocols nosne e a RE E A E E O E EEE E E E RE E E E EE EEA 42 INGE WOTK SOCUIIEY nseries ienee reie Sed eaten heat aa esas ENRE Se ea ati ea na het Gy ano EE E Eaa 42 LED displays and the factory reset button Current excitation outputs Ix Environmental Mechanical Screw terminal connector type and pin out Declaration Of Conformity cccececeseeessee sence eneeeeeeaeseneeeenseeeseaeeesaaeseaneeeeeeeesaesaseeeeneeeessaeseseaesaseeeenes 44 Preface About this User s Guide What you will learn from this user s guide This user s guide explains how to install configure and use the WEB TEMP so that you get the most out of its web server based temperature measurement features This user s guide also refers you to related documents available on our web site and to technical support resources Conventions in this user s guide For more information on Text presented in a box signifies additional information and helpful hints related to the subject matter you are reading Caution Shaded caution statements present information to help you avoid injuring yourself and others damaging your hardware or losing your data lt i gt Angle brackets that enclose numbers separated by a colon signify a range of numbers such as those assigned to registers bit settings etc bold text Bold text is used for the names
11. that bridges subnets within a network Server Enables or disables the device s web page server Enable this value to view the device s web page with a browser Disable access to the web page when you want to restrict access to the device to InstaCal or the Universal Library API User Name and Password The user name and password used to log in to a device session Log in is required only when changing configurable options on the device Default values can be changed with InstaCal A unique 64 bit physical MAC address is also assigned to the device This address is set at the factory and is not user configurable Restoring factory default network settings To restore network settings to factory default values press and hold the device s reset button for three seconds If InstaCal is open when default settings are restored click the Refresh Boards button on JnstaCal s tool bar to reflect the changes Calibrating the WEB TEMP The WEB TEMP is calibrated to the selected device settings each time a Submit or Calibrate button is pressed on a web interface configuration page or the OK button is pressed on an InstaCal board configuration page Warm up period After you configure the hardware options allow the WEB TEMP to warm up for 30 minutes before taking measurements This warm up time minimizes thermal drift and achieves the specified rated accuracy of measurements For analog RTD or thermistor measurements this warm up time is also requ
12. the Ethernet cable shipped with the device If you have multiple WEB TEMP devices configure each device separately and assign a unique IP address to each device You ll need to run nstaCal to change the IP address from the default 192 168 0 101 When connected the Link Activity LED illuminates steady green to indicate that you have established a valid Ethernet connection and blinks indicating network traffic Refer to Figure 11 on page 29 for the location of the Link Activity LED 7 Open your browser and enter the URL address that is printed on the device label The WEB TEMP Measurements page opens You can view current measurement data from this page Configuring the WEB TEMP All hardware options are configurable with nstaCal or the web interface JnstaCal must be used if any of the network parameters need to be changed such as the IP address of your device Configuration settings are stored in non volatile memory in EEPROM and are loaded on power up Refer to the sections Using the web interface below and Configuring the WEB TEMP using nstaCal on page 17 for detailed information Using the web interface You can view current measurements and configure hardware options from the device s web interface The web interface provides four tabs Each tab represents an HTML page that is stored on the device Measurements tab home page lists the temperature measurements digital values and alarm status read from each
13. the channel active high or low when activated You can configure up to eight independent alarms The configuration options are enabled on these pages when you are logged in The device is calibrated to the selected settings each time the Submit or Calibrate button is pressed Help summarizes the options on each web page and includes step by step procedures for setting up your temperature channels digital channels and alarms Logging in to a device Configurable options are disabled until you log in with the user name and password set for the device Only one user can be logged in at a time By default the user name is set to webtemp and the password is set to mccdaq You can change these values with JnstaCal Base64 encryption is used to encrypt the login name and password JavaScript must be enabled on the browser to encrypt login information If JavaScript is disabled on your browser when you log in the user name and password values are transmitted as plain text with no encryption applied Configuring the WEB TEMP using nstaCal All hardware and network options are configurable with InstaCal When the device is using its default configuration JnstaCal has access to all functions on the device Login is done in the background if the default user name and password are assigned to the device By default the user name is set to webtemp and the password is set to mccdaq You can change these values with InstaCal If the user
14. the input power falls outside of the specified voltage range of the external supply 4 75 V to 5 25 V LINK ACTIVITY LED The LINK ACTIVITY LED lower LED blinks green when a data packet is sent or received over the Ethernet connection The table below explains the function of the LINK ACTIVITY LED LED Indication Blinking green Data is being transmitted or received over the Ethernet connection Steady green The Ethernet is idle Your network traffic has reached its maximum limit and no communication is possible Check with your Network Administrator The Ethernet cable is not connected to the WEB TEMP The Ethernet cable is not connected to the network The Ethernet cable is damaged The Ethernet cable is not the correct type a crossover cable is required for a direct connection Off Digital logic voltage switch The digital logic voltage switch lets you set the voltage to either 3 3 V or 5 V default setting To interface with 3 3 V logic use the 3 3 V setting To interface with 5 V logic use the 5 V setting Refer to the digital I O specification on page 40 for the maximum and minimum threshold levels for each setting Left 5 V Right 3 3 V Figure 12 Output voltage switch positions To change the logic voltage slide the switch left or right with a screwdriver Factory default reset button Press and hold this button for three seconds to restore the factory default
15. types J K R S T N E and B Resistance temperature detectors RTDs 2 3 or 4 wire measurement modes of 100 Q platinum RTDs Thermistors 2 3 or 4 wire measurement modes Semiconductor temperature sensors LM36 or equivalent When making connections to the screw terminals be sure to tighten the screw until tight Simply touching the top of the screw terminal is not sufficient to make a proper connection Sensor selection The type of sensor you select will depend on your application needs Review the temperature ranges and accuracies of each sensor type to determine which is best suited for your application You can connect up to eight temperature sensors to the differential sensor inputs COH COL to C7H C7L Supported sensor categories include thermocouples RTDs thermistors or semiconductor sensors Do not mix sensor categories within channel pairs You can mix thermocouple types J K R S T N E and B within channel pairs however Do not connect two different sensor categories to the same channel pair The WEB TEMP provides a 24 bit A D converter for each channel pair Each channel pair can monitor one sensor category To monitor a sensor from a different category connect the sensor to a different channel pair 20 WEB TEMP User s Guide Signal I O Connections Current excitation output terminals IA to ID The WEB TEMP has four dedicated pairs of current excitation output term
16. up correctly Enter ping followed by the IP address of the WEB TEMP For example enter ping 192 168 0 10 and press the Return key If you can successfully communicate with the WEB TEMP a message similar to the one below is returned c Command Prompt of x C Documents and Settings JMS gt ping 192 168 0 10 Pinging 192 168 0 10 with 32 bytes of data Reply from 192 168 0 10 time ims TTL 108 Reply from 192 168 0 10 time lt ims TTL 106 Reply from 192 168 0 10 2 time lt ims TTL 166 Reply from 192 168 0 10 bytes 32 time lt ims TTL 160 Ping statistics for 192 168 0 10 Packets Sent 4 Received 4 Lost loss Approximate round trip times in milli seconds Minimum ms Maximum ims Average ms C Documents and Settings JMS gt If a Request timed out error ora Destination host unreachable message is returned the network settings may not be set correctly Press the RESET button on the WEB TEMP to reset the network configuration settings to factory default values If DHCP is enabled an IP address is automatically assigned to the device If DHCP is not enabled assign the device a unique static IP address and re establish communication with the WEB TEMP Refer to Connecting the WEB TEMP directly to a computer on page 18 for information on how to assign a static IP address If the RESET button does not restore the network settings the microcontroller on the WEB TEMP may not be working Con
17. 50 C to 1768 C 270 C to 400 C 270 C to 1300 C E 270 C to 1000 C B 0 C to 1820 C Zaag RTD 100 Q PT DIN 43760 0 00385 ohms ohm C 100 Q PT SAMA 0 003911 ohms ohm C 100 Q PT ITS 90 IEC751 0 0038505 ohms ohm C Thermistor Standard 2 252 Q through 30 000 Q Semiconductor IC TMP36 or equivalent 36 WEB TEMP User s Guide Specifications Accuracy Thermocouple measurement accuracy Table 4 Thermocouple accuracy specifications including CJC measurement error All specifications are Sensor Sensor temperature Accuracy error Accuracy error typical C Tempco C C Type maximum C J 210 C 3 098 1 762 0 040 0 C 1 282 0 724 1200 C 1 178 0 684 K 210 C 3 318 1 843 0 045 0 C 1 292 0 730 1372 C 1 495 0 799 S 50 C 1 892 1 058 0 027 250 C 0 853 0 479 1768 C 0 734 0 416 R 50 C 2 010 1 124 0 025 250 C 0 844 0 475 1768 C 0 612 0 347 B 250 C 2 199 2 192 0 004 700 C 0 824 0 821 1820 C 0 471 0 469 E 200 C 3 050 1 708 0 038 0 C 1 465 0 826 1000 C 1 010 0 564 T 200 C 3 226 1 797 0 045 0 C 1 334 0 754 400 C 0 856 0 496 N 200 C 3 406 1 897 0 035 0 C 1 300 0 735 1300 C 0 978 0 571 Note 4 Thermocouple measurement accuracy specifications include polynomial linearization cold ju
18. B TEMP s web interface must support JavaScript The web interface was tested with the following browsers for compatibility Mozilla Firefox 2 x Microsoft Internet Explorer 6 x Microsoft Internet Explorer 7 x WEB TEMP features The WEB TEMP provides eight temperature channels and eight digital I O channels An external supply shipped with the device provides power On board LEDs display the status of communication and external power All hardware configurable options are selectable with the web browser or JnstaCal Network configurable options are settable with JnstaCal When using JnstaCal if the login settings have been changed from the default a login name and password are required to change configuration settings Temperature channels The WEB TEMP provides eight differential input channels that accept temperature sensor type inputs A 24 bit analog to digital A D converter is provided for each pair of analog inputs Each pair of inputs constitutes a channel pair Measurements are available from four sensor categories Thermocouple types J K R S T N E and B Resistance temperature detectors RTDs 2 3 or 4 wire measurements of 100 Q platinum RTDs Thermistors 2 3 or 4 wire measurements Semiconductor temperature sensors LM36 or equivalent The sensor category is software programmable for each channel pair Each channel pair can connect to a different category of sensor The sensor category be
19. EEE EEE EENE tect beak EEE WEB TEMP User s Guide RTD and thermistor CONNECTIONS ceseesceesseeseeesceeccesecesecsecesecsaecnaecaaecaeecaeeeneseaeeeceeeeeenseceaeeeaeenseceaeeneeas 22 Two wire configuration ee Three wire configuration Four wire Conti guraty oni eA e a A ao ec cass Seana O e suave oo doesn tee Aeon O OR adie OR OTS Semiconductor sensor measurements cceeccesccesecssecseecseeeseeneeeceseceseeseeaeceaeceaeceaecaeecseeeaeeeeeeeseseeeeeeeeeenaes 25 Wiin configuration onnee aean E Goole PeN hat atest Stele Ea A eben ita NAL ated beatae tee EERE 25 Digital O connect ons aenea re en EENE ee Oe i i ee has 26 Configuring the DIO channels to generate alarms 0 cc ceceseeceeeeecseeeeseeseeecseesecseesesacesesecsecsecseesesaeeaeeeseaseesseeaesaeeseneees 27 Chapter 4 Functional Details sisiraan cctecce fete cecceccersececseceshecnateadacis deztaecoasauceeceiuacevads decby sateuccsvbeducheuostenetecedsts 28 Thermocouple measurements ree stire e a E aE e SEEE EE N AEE AEE ES EEEE EISNER EES 28 Cold junction compensation CJC Data linearization Open thermocouple detection OTD oo cee ececcescsessscsseseeseeseeseecsecsecsecseeseeacsessecseesesseeaeeacassessessesseeaeeaseasesaeesesaeeaeeaees 28 RTD and thermistor Measurement c cssccccocesesssnsscceccececnsssvececcecscssnsecsecescvcvsssneueceucosessseueceesesesnsnsuesevseses 28 Data linearization nessa hes cre oe ae
20. EMP User s Guide Installing the WEB TEMP Internet Protocol TCP IP Properties BE General You can get IP settings assigned automatically if your network supports this capability Otherwise you need to ask your network administrator for the appropriate IP settings Obtain an IP address automatically Use the following IP address IPraddress A Subnet mask aaa Default gateway aaa Obtain DNS server address automatically Use the following DNS server addresses Preferred DNS server roe Alternate DNS server a 4 Select Use the following IP address option and enter the following o IP address Enter 192 168 0 102 Note that the last three digits of this number can be any number between 11 and 254 inclusive but must be different from the IP address assigned to the device The default IP address set for the WEB TEMP is 192 168 0 101 Subnet mask Enter 255 255 255 0 Default gateway Enter 192 168 0 1 Caution Assigning an arbitrary IP address could result in duplicate IP addresses on the network This condition can cause a communication failure that affects both devices Make sure when configuring static IP addresses that you set different addresses for each device 5 Click OK 6 Connect the WEB TEMP s Ethernet port to your Ethernet hub using the supplied cable or to your computer s Ethernet port using a CAT S or higher crossover cable Note If you connect to an Ethernet hub you can use
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22. UDP TCP NBNS HTTP Protocols using UDP or TCP for transport communicate on their IETF assigned ports for example HTTP on TCP port 80 UDP messaging protocol UDP port 54211 TCP downloading protocol TCP port 54267 HTTP 1 0 alternate port TCP port 49152 65535 not including 54267 Network name webtemp_xxxxx where xxxxx is the device s serial number Network name publication via NBNS responds to b node broadcasts therefore only available on the local subnet Max number of simultaneous HTTP 3 connections Max number of non HTTP TCP 5 sockets Network security Table 19 Factory default specifications Security implementation IP address based session manager with user name password login for configuration and control transactions data is not secured Session timeout 5 minutes with no activity User name password encryption Base64 The default web page does not support encryption if Javascript is disabled in the web browser Vulnerabilities Denial of service attacks user name password spoofing script probing and simple decryption LED displays and the factory reset button Table 20 LED and button configurations POWER COMM LED top 4 75 V lt Vext lt 5 25 V On Vext lt 4 75 V Vext gt 5 25 VOff power fault Blinks during microcontroller communications LINK ACTTIVITY LED bottom On when there is a valid Ethernet connection and blinks when an Ethernet packet is sent or
23. WEB TEMP 8 Channel Temperature Measurement with Web Interface User s Guide MEASUREMENT COMPUTING WEB TEMP 8 Channel Temperature Measurement with Web Interface User s Guide A A MEASUREMENT COMPUTING Document Revision 3 June 2008 Copyright 2008 Measurement Computing Corporation Your new Measurement Computing product comes with a fantastic extra Management committed to your satisfaction Refer to www mccdag com execteam html for the names titles and contact information of each key executive at Measurement Computing Thank you for choosing a Measurement Computing product and congratulations You own the finest and you can now enjoy the protection of the most comprehensive warranties and unmatched phone tech support It s the embodiment of our mission To provide PC based data acquisition hardware and software that will save time and save money Simple installations minimize the time between setting up your system and actually making measurements We offer quick and simple access to outstanding live FREE technical support to help integrate MCC products into a DAQ system Limited Lifetime Warranty Most MCC products are covered by a limited lifetime warranty against defects in materials or workmanship for the life of the product to the original purchaser unless otherwise noted Any products found to be defective in material or workmanship will be repaired replaced with same or similar devic
24. acket InterNet Groper the computer to verify that it is connecting to your network Ping is a diagnostic utility used to send a request to a device The device then returns a response Enter ping followed by the IP address of the computer Using the address returned in the example above with ipconfig enter ping 127 0 0 01 and press the Return key This address tells the computer to test its network setup 32 WEB TEMP User s Guide Ethernet Troubleshooting If your computer is connected to the network a message similar to the one shown here is returned ec Command Prompt Microsoft Windows XP Version 5 1 2666 lt C Copyright 1985 2661 Microsoft Corp C Documents and Settings JMS gt ping 127 6 6 61 Pinging 127 0 0 1 with 32 bytes of data Reply from bytes 32 time lt ims TTL 128 Reply from bytes 32 time lt ims TTL 128 Reply from bytes 32 time lt ims TTL 128 Reply from bytes 32 time lt ims TTL 128 Ping statistics for 127 0 0 1 Packets Sent 4 Received 4 Lost z loss Approximate round trip times in milli seconds Minimum ms Maximum ms Average Gms C Documents and Settings JMS gt If your computer is not connected to the network a Request timed out error ora Destination host unreachable message is returned Check with your network administrator Verify the network path to the WEB TEMP You can ping the WEB TEMP to verify that the network path from the computer to the device is set
25. anical specifications Dimensions 127 mm L x 88 9 mm W x 35 56 H Screw terminal connector type and pin out Table 24 Screw terminal connector specifications Connector type Screw terminal Wire gauge range 16 AWG to 30 AWG Table 25 Screw terminal pin out Pin Signal Name Pin Description Pin SignalName Pin Description 1 IA CHO CH1 current excitation source 27 ID CH6 CH7 current excitation return 2 NC No connect see Note 20 28 AGND Analog ground 3 COH CHO sensor input 29 C7L CH7 sensor input 4 COL CHO sensor input 30 C7H CH7 sensor input 5 4wo01 CHO0 CH1 4 wire 2 sensor common 31 IC67 CH6 CH7 2 sensor common 6 IC01 CHO0 CH1 2 sensor common 32 4W67 CH6 CH7 4 wire 2 sensor common 7 C1H CH1 sensor input 33 C6L CH6 sensor input 8 C1iL CH1 sensor input 34 C6H CH6 sensor input 9 AGND Analog ground 35 NC No connect see Note 20 10 IA CHO0 CH1 current excitation return 36 ID CH6 CH7 current excitation source 11 IB CH2 CH8 current excitation source 37 IC CH4 CH5 current excitation return 12 NC No connect see Note 20 38 AGND Analog ground 13 C2H CH2 sensor input 39 C5L CH5 sensor input 14 C2L CH2 sensor input 40 C5H CH5 sensor input 15 4W23 CH2 CH3 4 wire 2 sensor common 41 1045 CH4 CH5 2 sensor common 16 IC23 CH2 CH3 2 sensor common 42 4W45 CH4 CH5 4 wire 2 senso
26. ates to temperature The WEB TEMP makes fully differential thermocouple measurements without requiring ground referencing resistors A 32 bit floating point value in either a voltage or temperature format is returned by software Open thermocouple detection OTD is available for each thermocouple input OTD automatically detects an open or broken thermocouple Use the web browser or JnstaCal to select the thermocouple type J K R S T N E and B and one or more input channels to connect the thermocouple Wiring configuration Connect the thermocouple to the WEB TEMP using a differential configuration as shown in Figure 3 2 C H C L O O O S Ix x sy C L AGND Ix F H OO N Figure 3 Typical thermocouple connection Note There are two high low channel pairs on each terminal The indicates the channel number Do not make connections to pin marked NC Connect thermocouples to the WEB TEMP such that they are floating with respect to AGND pins 9 19 28 38 The WEB TEMP AGND pins are isolated from earth ground so connecting thermocouple sensors to voltages referenced to earth ground is permissible as long as the isolation between the AGND pins and earth ground is maintained When thermocouples are attached to conductive surfaces the voltage differential between multiple thermocouples must remain within 1 4 V For best results we recommend the use of insulated or ungrounded thermoc
27. de internally When configured for two wire mode both sensors must be connected to obtain proper measurements Three wire configuration A three wire configuration compensates for lead wire resistance by using a single voltage sense connection With a three wire configuration you can connect only one sensor per channel pair A three wire measurement configuration is shown in Figure 6 Note There are two high low channel pairs on each terminal The indicates the channel number Do not make connections to pin marked NC IC O d C H C L O O O O 1 x x C H C L AGND Figure 6 Three wire RTD or thermistor sensor measurement configuration When you select a three wire sensor configuration the WEB TEMP measures the lead resistance on the first channel between Ix and C L and measures the sensor itself using the second channel between C L and Ix This configuration compensates for any lead wire resistance and temperature change in lead wire resistance Connections to C H for the first channel and C H C L of the second channel are made internally Three wire compensation For accurate three wire compensation the individual lead resistances connected to the I pins must be of equal resistance value Four wire configuration With a four wire configuration connect two sets of sense excitation wires at each end of the RTD or thermistor sensor This configuration completely com
28. e measurement accuracy can be affected due to the lead wire resistance For example connecting lead wires that have a resistance of 1 Q 0 5 Q each lead to a 100 Q platinum RTD will result in a 1 measurement error With a two wire configuration you can connect either one sensor per channel pair or two sensors per channel pair Two wire single sensor A two wire single sensor measurement configuration is shown in Figure 4 Note There are two high low channel pairs on each terminal The indicates the channel number Do not make connections to pin marked NC O Z C H C L x 4w C C H C L AGND S IIx Figure 4 Two wire single RTD or thermistor sensor measurement configuration When you select a two wire single sensor configuration connections to C H and C L are made internally WEB TEMP User s Guide Signal I O Connections Two wire two sensor A two wire two sensor measurement configuration is shown in Figure 5 Note There are two high low channel pairs on each terminal The indicates the channel number Do not make connections to pin marked NC a4 Se ICH C H O Zz C H I 2 x C 4W C L AGND 20 Figure 5 Two wire two RTD or thermistor sensors measurement configuration When you select a two wire two sensor configuration connections to C H first sensor and C H C L second sensor are ma
29. e or refunded at MCC s discretion For specific information please refer to the terms and conditions of sale Harsh Environment Warranty Program Any Measurement Computing product that is damaged due to misuse or any reason may be eligible for replacement with the same or similar device for 50 of the current list price I O boards face some harsh environments some harsher than the boards are designed to withstand Contact MCC to determine your product s eligibility for this program 30 Day Money Back Guarantee Any Measurement Computing Corporation product may be returned within 30 days of purchase for a full refund of the price paid for the product being returned If you are not satisfied or chose the wrong product by mistake you do not have to keep it These warranties are in lieu of all other warranties expressed or implied including any implied warranty of merchantability or fitness for a particular application The remedies provided herein are the buyer s sole and exclusive remedies Neither Measurement Computing Corporation nor its employees shall be liable for any direct or indirect special incidental or consequential damage arising from the use of its products even if Measurement Computing Corporation has been notified in advance of the possibility of such damages HM WEB TEMP doc 3 Trademark and Copyright Information TracerDAQ Universal Library Harsh Environment Warranty Measurement Computing Corporation and the
30. e measurement is made the resistance of the RTD is calculated using Ohms law the sensor resistance is calculated by dividing the measured voltage by the current excitation level Ix source The value of the Ix source is stored in local memory Once the resistance value is calculated the value is linearized in order to convert it to a temperature value The measurement is returned by software as a 32 bit floating point value in a resistance or temperature format 28 WEB TEMP User s Guide Functional Details Data linearization An on board microcontroller automatically performs linearization on RTD and thermistor measurements RTD measurements are linearized using a Callendar Van Dusen coefficients algorithm you select DIN SAMA or ITS 90 Thermistor measurements are linearized using a Steinhart Hart linearization algorithm coefficients provided by the sensor manufacturer s data sheet External components The WEB TEMP has the following external components as shown in Figure 11 Screw terminals Ethernet port External power connector Status LEDs POWER COMM and LINK ACTIVITY Digital output voltage switch Factory default reset button Screw terminal Pins 27 to 52 Power connector Factory default reset button LEDs POWER COMM top and LINK ACTIVITY bottom Digital output voltage switch Ethernet port Screw terminal Pins 1 to 26 Figure 11 WEB TEMP component locations Screw te
31. eersessresersestrersrseeriresteeestveeeesereseerevesetserorssnesrre sre 17 Settins thenetwork parameters asien n eaae ea ni e a hens E aano ERE ver E A E Eo A AEAEE OERA 17 Calibrating the WEB TEM P 23 r eae e hanes dais Aa E EE E E AE a 18 Warm up PeriOd saei eea eaea e epvds sesspaciig sh EEn eree E a va ates OTE Epe NEE EENE EE SEES EEE E ain EEA ER ES 18 Chapter 3 Signal 1 O Comme ction a e ae ra ae aa ara r aa pare e ade ka e Ea r Haana Ekaa da depa aande mo ne taaa Eaei nnas Screw terminal pin Out Sensor input terminals COH COL to C7H C7L Current excitation output terminals LTA to ID ooo eee eeeesessececceseceseesececeeseccecseceeesecesecseceaeesecesecseceaeeaesesecaeeeaeeeeeneees 21 Four wire two sensor common terminals 4W01 4W23 4W45 4W67 ccccccccsscceessscceesseecessseceesseeeeesseecesssesessseeeessee 21 Four wire two sensor common terminals ICO1 IC23 IC45 IC67 CIC SONSOLS cs cos ce ses cnicsncusesnnees cosas ESEE E S E NEEE ES tessedentedsoavngedeos SEES VEEE EESE EAR AAE sodseaes tosses sheet suendencve ones Digital terminals DIOO to DIOT as meine eaaa aa o e Reie utdeevh dns tage dhawueductusdesacaiidesa sdebtscaseasa Pull up down terminal PU D Ground terminals AGND and GND eaa ea E EERE EEA ER aU RNs A KE NE RERE Powertermmal FSV snena e ra N TNA EEN E AA EE Thermocouple connections s vvsrseeveresiessevseaeddestabdnwcustoenecaebedecuaenus dais iia E A E E i Wirine CONF SUTALI oM esprirni rr E E EEE
32. erial number read only The following default network parameters are programmable with JnstaCal Identifier Text that identifies the WEB Series device This value is optional and is not set by default Up to 48 alpha numeric characters can be entered DHCP Enables configuration by a DHCP Dynamic Host Configuration Protocol Server DHCP is a service that automatically assigns IP addresses to clients supporting the protocol If the connected network has a DHCP server the WEB TEMP should be assigned an IP address shortly after it is powered up and attached to the network nstaCal will display the IP address assigned to the WEB TEMP The default DHCP setting for the WEB TEMP is Enabled Disable this setting when the server is not DHCP enabled or when entering a static IP address Unless there is a reason to disable DHCP such as the network server is not DHCP enabled we recommend that you leave DHCP enabled IP The Internet Protocol IP address that is stored on the device Use this address when a DHCP server is not available or when DHCP is disabled Subnet The Subnet Mask that is stored on the device The Subnet Mask is the part of the IP address that denotes the local Subnet Use this address when a DHCP server is not available or when DHCP is disabled Gateway The Gateway IP address that is stored on the device Use this address when a DHCP server is not available or when DHCP is disabled A gateway is the IP address of the device
33. ettings and that your network configuration is working If the network configuration and settings are properly set but you still cannot communicate with the WEB TEMP the problem may be with the WEB TEMP For hardware related issues contact Measurement Computing Corporation technical support by phone fax or email Phone 508 946 5100 and follow the instructions for reaching Tech Support Fax 508 946 9500 to the attention of Tech Support Email techsupport mccdaq com For international customers contact your local distributor where you purchased the WEB TEMP Click on this link www measurementcomputing com sales asp to locate your distributor 34 Chapter 6 Specifications Typical for 25 C unless otherwise specified Specifications in italic text are guaranteed by design Analog input Table 1 Generic analog input specifications Parameter Conditions Specification A D converters Four dual 24 bit Sigma Delta type Number of channels 8 differential Input isolation 500 VDC minimum between field wiring and power supply input Channel configuration Software programmable to match sensor type Differential input voltage range Thermocouple 0 080 V for the various sensor RTD 0 to 0 5V CoREOHES Thermistor 0to2 V Semiconductor sensor 0 to 2 5 V Absolute maximum input C0x through C7x relative to 25 V power on voltage AGND pins 9 19 28 38 40 V po
34. gged into If the cable is good plugged in and the power to the socket is on then the WEB TEMP is not powering up correctly Contact MCC technical support Refer to Getting help on page 34 for contact information 2 Verify the Ethernet connection The LINK ACTIVITY LED illuminates steady green when the WEB TEMP is connected to an active Ethernet hub or switch o Ifthe LINK ACTIVITY LED is off verify that the Ethernet cable is the correct type that it is not damaged and that it is connected correctly between the WEB TEMP and a known functional server hub switch or connected to your computer if you are connected directly o Ifthe Ethernet cable is plugged into a wall socket check with your Network Administrator or computer professional that the wall socket is active and that it is connected to an active Ethernet hub or switch If you are properly connected to an active server hub switch and the LED is still off there is a problem with the WEB TEMP Contact MCC technical support Refer to Getting help on page 34 for contact information 3 Verify the network connection When the WEB TEMP is connected to a network the LINK ACTIVITY LED flashes when there is activity on the network o Ifthe LINK ACTIVITY LED is solid green your network s traffic is at its maximum limit and no communication is possible or the network traffic is idle Check with your network administrator o If the LINK ACTIVITY LED is not illuminated there are tw
35. ground yourself using a wrist strap or by simply touching the computer chassis or other grounded object to eliminate any stored static charge If the WEB TEMP is damaged notify Measurement Computing Corporation immediately by phone fax or e mail Phone 508 946 5100 and follow the instructions for reaching Tech Support Fax 508 946 9500 to the attention of Tech Support Email techsupport mccdaq com For international customers contact the local distributor where you purchased the WEB TEMP Click on this link www measurementcomputing com sales asp to locate your distributor Installing the software Refer to the Quick Start Guide for instructions on installing the software on the Measurement Computing Data Acquisition Software CD This booklet is available in PDF at www mccdag com PDFmanuals DAQ Software Quick Start pdf Connecting the AC power adapter Power to the WEB TEMP is provided with the 10 watt AC power adapter PS S V2AEPS Connect the adapter cord to the power connector on the WEB TEMP device and plug the AC adapter into an electrical outlet The POWER COMM LED illuminates when 5 V power is supplied to the WEB TEMP If the voltage supply is less than 4 75 V or more than 5 25 V the POWER COMM LED will not light Refer to Figure 11 on page 29 for the location of the POWER COMM LED Connecting the WEB TEMP A TCP IP connection between the WEB TEMP and the network or computer is required to access the dev
36. h sensors must be connected to obtain proper measurements Semiconductor sensor measurements Semiconductor sensors are suitable over a range of approximately 40 C to 125 C where an accuracy of 2 C is adequate The temperature measurement range of a semiconductor sensor is small when compared to thermocouples and RTDs However semiconductor sensors can be accurate inexpensive and easy to interface with other electronics for display and control The WEB TEMP makes high resolution measurements of semiconductor sensors such as the TMP36 or equivalent and returns a 32 bit floating point value in either a voltage or temperature format Use InstaCal or the web interface to select the sensor type TMP36 or equivalent and the sensor input channel to connect the sensor Wiring configuration Connect a TMP36 or equivalent semiconductor sensor using a single ended configuration as shown in Figure 9 The indicates the channel number Do not make connections to pins marked NC The WEB TEMP also provides 5V and GND pins for powering the sensor but use of this power source requires overriding the isolation between analog and power ground by connecting AGND to GND 25 WEB TEMP User s Guide Signal I O Connections NC C H Ix C L TMP36 H 4WH C H C H C L AGND O lx Figure 9 Semiconductor sensor measurement configuration The software outputs the measurement data as a 32 bi
37. ications Number of Input Channels Maximum Throughput 2 Samples second 2 S s on each channel 4 S s total 2 S s on each channel 6 S s total 2 S s on each channel 8 S s total 2 S s on each channel 10 S s total 2 S s on each channel 12 S s total 2 S s on each channel 14 S s total 2 S s on each channel 16 S s total COLA DAD Nn BR WL N Re Note 14 The analog inputs are configured to run continuously Each channel is sampled twice per second The maximum latency between when a sample is acquired and the temperature data is provided by the Ethernet unit is approximately 0 5 seconds 39 WEB TEMP User s Guide Specifications Digital input output Table 10 Digital input output specifications Digital type CMOS Number of I O 8 DIOO through DIO7 Configuration Independently configured for input or output Switch selectable output voltages 5 V and 3 3 V Power on conditions Power on reset is Input mode except when bits are configured to operate as alarms Pull up pull down configuration All pins are connected to 47 kOhm resistors that share a common point accessible at Pin 22 of the device PU D This pin is floating by default and is user configurable via external connection For pull up mode connect this pin to Pin 21 5V For pull down mode connect this pin to Pin 48 GND Digital I O transfer rate software paced Digital input 50 port reads or s
38. ice s web interface A 10Base T compatible Ethernet port hub or switch is required You can connect the WEB TEMP using the following configurations Connect to your Local Area Network LAN for communication within a private network intranet refer to the procedure on page 14 Connect to your LAN for communication across networks communicate over the internet for example refer to the procedure on page 14 Connect directly to a computer s Ethernet port for local access requires a crossover cable not provided or network hub refer to the procedure on page 15 Use the standard Ethernet cable provided to connect the WEB TEMP to a TCP IP based local or wide area network or to connect to a single PC through a hub or switch Use a CAT 5 or higher crossover cable not provided to connect the WEB TEMP to an Ethernet card installed in a computer 13 WEB TEMP User s Guide Installing the WEB TEMP How you access the web interface once a TCP IP connection is established depends on your configuration When the WEB TEMP is connected to the same network as the computer browser enter the URL that is printed on the device to open the device s home page When the WEB TEMP is connected to a different network as the computer browser enter the public IP address set for the device to open the device s home page Refer to Connecting to a LAN for communication across networks below for more information Connecting to a LAN for commu
39. inals IA to ID These terminals have a built in precision current source to provide excitation for the resistive sensors used for RTD and thermistor measurements Each current excitation terminal is dedicated to one pair of sensor input channels JA is the current excitation source for channel 0 and channel 1 IB is the current excitation source for channel 2 and channel 3 IC is the current excitation source for channel 4 and channel 5 JD is the current excitation source for channel 6 and channel 7 Four wire two sensor common terminals 4W01 4W23 4W45 4W67 These terminals are used as the common connection for four wire configurations with two RTD or thermistor sensors Four wire two sensor common terminals IC01 1C23 1C45 IC67 These terminals are used as the common connection for four wire configurations with two RTD or thermistor sensors CJC sensors The WEB TEMP has four built in high resolution temperature sensors for thermocouple measurements Each CJC sensor is dedicated to one of the four channel pairs and is located behind the associated channel s screw terminal These sensors measure the ambient temperature at the terminal block so that the cold junction voltage can be calculated Digital terminals DIOO to DIO7 You can connect up to eight digital I O lines to the screw terminals labeled DIOO to DIO7 Each terminal is software configurable for input or output A PU D terminal is provided for pull up down
40. ingle bit reads per second typical Digital output 100 port writes or single bit writes per second typical Input high voltage 5 V mode 4 V min 5 5 V absolute max Input high voltage 3 3 V mode 2 64 V min 5 5 V absolute max Input low voltage 5 V mode 1 V max 0 3 V absolute min Input low voltage 3 3 V mode 0 66 V max 0 3 V absolute min Output low voltage IOL 2 5 mA 0 6 V max Output high voltage IOH 2 5 mA 4 3 V min 5 V mode 2 7 V 3 3 V mode Note 15 Ground pins on the WEB TEMP labeled GND are isolated from AGND pins and from earth ground Temperature alarms Table 11 Temperature alarm specifications Number of alarms 8 one per digital I O line Alarm functionality Each alarm controls its associated digital I O line as an alarm output The input to each alarm may be any of the analog temperature input channels When an alarm is enabled its associated I O line is set to output and driven to the appropriate state determined by the alarm options and input temperature The alarm configurations are stored in non volatile memory and are loaded at power on Alarm input modes Alarm when input temperature gt T1 Alarm when input temperature gt T1 reset alarm when input temperature goes below T2 Alarm when input temperature lt T1 Alarm when input temperature lt T1 reset alarm when input temperature goes above T2 Alarm when input temperature
41. ired to stabilize the internal current reference 18 Chapter 3 Signal I O Connections Screw terminal pin out The WEB TEMP has four rows of screw terminals two rows on the top edge of the housing and two rows on the bottom edge There are 26 connections on each side Signals are identified in Figure 2 Q N Q Lo ZuteoO ur Z2iILTOY aT 268664 ORNO ZOGO GOnot Szqyoto0Z0000 ASBBSE8894 PRELE NNA olif RODOrAMTNO ROMOKAMTNHNONAODOrAN NAAND qonoatt yt tTFTHn00 OWODOOOOOOO A OOOWOWDOODWDOOOOOOO 20O000000e 0000000000 Sete re KHNMYNTNOOR DDO o Q TJSDSITazZ Iu gQgIrIn Z gt 28588 tOG0GSR8Fr35 OR tONAUNSNANO 50000 EO 88S55584 mSSSS088Sn0RP550aq Figure 2 WEB TEMP screw terminal pin numbers Do not make connections to the terminals labeled NC 19 WEB TEMP User s Guide Signal I O Connections WEB TEMP screw terminal descriptions Pin Signal Name Pin Description Pin SignalName Pin Description 1 IA CHO CH1 current excitation source 27 ID CH6 CH7 current excitation return 2 NC No connect 28 AGND No connect 3 COH CHO sensor input 29 C7L CH7 sensor input 4 COL CHO sensor input 30 C7H CH7 sensor input 5 4w01 CHO0 CH1 4 wire 2 sensor common 31 IC67 CH6 CH7 2 sensor common 6 IC01 CHO0 CH1 2 sensor common 32 4W67 CH6 CH7 4 wire 2 sensor common 7 C1H
42. is lt T1 or gt T2 Note T1 and T2 may be independently set for each alarm Alarm output modes Disabled digital I O line may be used for normal operation Enabled active high output digital I O line goes high when alarm condition is met Enabled active low output digital I O line goes low when alarm condition is met Alarm update rate 1 second Memory Table 12 Memory specifications EEPROM 512 bytes for sensor configuration FLASH 2 MB for device configuration and website storage Microcontroller Table 13 Microcontroller specifications Type One high performance 8 bit RISC microcontroller isolated One high performance 16 bit RISC microcontroller non isolated 40 WEB TEMP User s Guide Specifications Power Table 14 Power specifications Parameter Conditions Specification Supply current Note 17 Continuous mode 440 mA max External power input Note 16 5 VDC 5 5 VDC power supply provided External power supply included MCC p n PS 5V2AEPS 5VDC 10 W 5 regulation Voltage supervisor limits 4 75 V gt Vext or Vext gt 5 25 V PWR LED Off power fault 4 75 V lt Vext lt 5 25 V PWR LED On User output voltage range Available at 5V screw terminal 4 65 V min 5 25 V max User output current available Available at 5V screw terminal 10 mA max Note 16 Voltage specification applies at barrel
43. n port configuration contact your network administrator or computer professional Configuring the WEB TEMP All hardware options are configurable with nstaCal or the web interface JnstaCal must be used if any of the network parameters need to be changed such as the IP address of your device Configuration settings are stored in non volatile memory in EEPROM and are loaded on power up Refer to the sections Using the web interface on page 16 and Configuring the WEB TEMP using JnstaCal on page 17 for detailed information Connecting the WEB TEMP directly to a computer Use this procedure to connect the WEB TEMP directly to a computer This scenario provides local access only and requires that you set up your computer to use a static IP address for communication with the WEB TEMP If you are not using a network hub a CAT S or higher crossover cable is required to connect to the computer s Ethernet port If you are connecting to your computer through a network hub or switch the Ethernet cable provided with your device can be used Knowledge of network configuration is required If you are not familiar with network configurations and have questions regarding your network settings consult your network administrator or a computer professional 1 Select Start gt Control Panel gt Network Connections 2 Double click on Local Area Connection 3 Select Internet Protocol TCP IP and click Properties 15 WEB T
44. name and password have been changed configurable options are disabled until you log in with the user name and password set for the device Only one user can be logged in at a time It is recommended that you change the user name and password from the default To prevent unauthorized changes to your device configuration make sure you change the user name and password values from the default In the event that you forget your settings they can be reset to the default values using the reset button on the device Pressing and holding the reset button for three seconds sets all network settings back to default including the user name and password Note For security purposes do not change the log in information to the name and password used to access secure accounts such as a credit card or bank account Setting the network parameters Use InstaCal to change configurable network settings set on the WEB TEMP The network parameters are not accessible via the web interface The device is shipped configured with the following default settings 17 WEB TEMP User s Guide Installing the WEB TEMP Default network settings Network setting Default value Identifier not set optional DHCP setting Enabled IP address 192 168 0 101 Subnet mask 255 255 255 000 Gateway 192 168 0 1 Server Enabled User name webtemp Password mcecdaq MAC address 00 12 71 Cx xx xx where xxxxx is the device s s
45. nclude lead resistance errors for 2 wire thermistor connections Contact your sensor supplier for details on the actual sensor error limitations Total thermistor resistance on any given channel pair must not exceed 180 k ohms Typical resistance values at various temperatures for supported thermistors are shown in Table 8 Table 8 Typical thermistor resistance specifications Temp 2252 Q 3000 Q 5kO 10 KQ 30 kQ thermistor thermistor thermistor thermistor thermistor 40 C 76 kQ 101 kQ 168 kQ 240 KQ Note 12 885 KQ Note 12 35 C 55 kQ 73 kQ 121 kQ 179 kQ 649 KQ Note 12 30 C 40 kQ 53 kQ 88 kQ 135 kQ 481 kQ Note 12 25 C 29 kQ 39 kQ 65 kQ 103 kQ 360 kQ Note 12 20 C 22 kQ 29 kQ 49 kQ 79 kQ 271 KQ Note 12 15 C 16 kQ 22 kQ 36 kQ 6l kQ 206 kQ Note 12 10 C 12kQ 17kQ 28 kQ 48 kQ 158 kQ 5 C 9 5 kQ 13 kQ 21 kQ 37 kQ 122 kQ 0 C 7 4 KQ 9 8 kQ 16 kQ 29 kQ 95 kQ Note 12 Resistance values greater than 180 kQ cannot be measured by the WEB TEMP in the thermistor mode The 180kQ resistance limit includes the total resistance across the current excitation Ix pins which is the sum of the thermistor resistance and the lead resistances Note 13 For accurate three wire compensation the individual lead resistances connected to the Ix pins must be of equal ohmic value To ensure this use connection leads of equal lengths Throughput rate Table 9 Throughput rate specif
46. nction compensation and system noise These specs are for one year or 3000 operating hours whichever comes first and for operation of the WEB TEMP between 15 C and 35 C after 30 minute warm up The tempco should be applied to the accuracy specifications for operation at an ambient temperature outside of the 15 C and 35 C range There are total of four CJC sensors two per side of the module Each CJC sensor is dedicated to one of the four channel pairs The accuracy listed above assumes the screw terminals are at the same temperature as the CJC sensor Errors shown do not include inherent thermocouple error Contact your thermocouple supplier for details on the actual thermocouple accuracy error Note 5 Thermocouples must be connected to the WEB TEMP such that they are floating with respect to AGND pins 9 19 28 38 48 The WEB TEMP AGND pins are isolated from earth ground You can connect thermocouple sensors to voltages referenced to earth ground as long as the isolation between the AGND pins and earth ground is maintained Note 6 When thermocouples are attached to conductive surfaces the voltage differential between multiple thermocouples must remain within 1 4V For best results we recommend using insulated or ungrounded thermocouples when possible Semiconductor sensor measurement accuracy Table 5 Semiconductor sensor accuracy specifications Sensor Type Temperature Range C Maximum Accuracy Error TMP36 or e
47. nge by applying 2 5 V to the thermocouple s low side at the C L input Always connect thermocouple sensors to the WEB TEMP in a floating fashion Do not attempt to connect the thermocouple low side C L to GND or to a ground referencing resistor Cold junction compensation CJC When connecting the thermocouple sensor leads to the sensor input channel the dissimilar metals at the WEB TEMP terminal blocks produce two additional thermocouple junctions This junction creates a small voltage error term which must be removed from the overall sensor measurement using a cold junction compensation technique The measured voltage includes both the thermocouple voltage and the cold junction voltage To compensate for the additional cold junction voltage the WEB TEMP subtracts the cold junction voltage from the thermocouple voltage The WEB TEMP has four high resolution CJC temperature sensors integrated into the design The CJC sensors are configured as one sensor for each channel pair CJC sensors measure the average temperature at the terminal block so that the cold junction voltage can be calculated A software algorithm automatically corrects for the additional thermocouples created at the terminal blocks by subtracting the calculated cold junction voltage from the analog input s thermocouple voltage measurement Increasing the thermocouple length If you need to increase the length of your thermocouple use the same type of thermocouple wires to mi
48. nication within a network Use this procedure to connect the WEB TEMP to a local area network LAN When connected all computers installed on the same network can access the WEB TEMP s web interface Note This procedure assumes the network server is equipped with DHCP dynamic host configuration protocol and will automatically assign an IP address to the WEB TEMP when it is connected to the network 1 Connect the WEB TEMP to the network using the Ethernet cable provided The Link Activity LED will illuminate steady green to indicate that you have established a valid Ethernet connection 2 Open your web browser and enter the URL that is printed on the device label The WEB TEMP Measurements page opens You can view current measurement data from this page A log in name default is webtemp and password default is mccdaq are required to change configuration settings lf the WEB TEMP is not recognized by the network If the WEB TEMP Measurements page does not open the server may not have DHCP or DHCP may be disabled on the server In either situation assign a static IP address to the WEB TEMP before connecting to the network Refer to Connecting the WEB TEMP directly to a computer on page 15 for instructions After you assign the static IP address connect to the network using the standard Ethernet cable shipped with the device open the browser and enter the static IP address Configuring the WEB TEMP All hardware options a
49. nimize the error introduced by thermal EMFs Data linearization After the CJC correction is performed on the measurement data an on board microcontroller automatically linearizes the thermocouple measurement data using National Institute of Standards and Technology NIST linearization coefficients for the selected thermocouple type The measurement data is then output as a 32 bit floating point value in the configured format voltage or temperature Open thermocouple detection OTD The WEB TEMP is equipped with open thermocouple detection for each analog input channel OTD is automatically enabled when the channel pair is configured for thermocouple sensors With OTD any open circuit or short circuit condition at the thermocouple sensor is detected by the software An open channel is detected by driving the input voltage to a negative value outside the range of any thermocouple output The software recognizes this as an invalid reading and flags the appropriate channel The firmware continues to sample all channels when OTD is detected RTD and thermistor measurements RTDs and thermistors are resistive devices that require an excitation current to produce a voltage drop that can be measured differentially across the sensor The WEB TEMP measures the sensor resistance by forcing a known excitation current through the sensor and then measuring differentially the voltage across the sensor to determine its resistance After the voltag
50. o earth ground and AGND the thermocouples are no longer isolated In this case thermocouples must not be connected to any conductive surfaces that may be referenced to earth ground For general information regarding digital signal connections and digital I O techniques refer to the Guide to Signal Connections available on our web site at www mccdaq com signals signals pdf 26 WEB TEMP User s Guide Signal I O Connections Configuring the DIO channels to generate alarms The WEB TEMP features eight independent temperature alarms All alarm options are configurable using the web browser or InstaCal When a digital bit is configured as an alarm that bit will be configured as an output and assume the state defined by the alarm configuration Each alarm controls an associated digital I O channel as an alarm output The input to each alarm is one of the temperature input channels You set up the temperature conditions to activate an alarm and the output state of the channel active high or low when activated When an alarm is enabled its associated I O line is set to output and driven to the appropriate state determined by the alarm options and input temperature Alarm configuration settings are stored in non volatile memory and are loaded on power up 27 Chapter 4 Functional Details Thermocouple measurements The WEB TEMP hardware level shifts the thermocouple s output voltage into the A D s common mode input ra
51. o possibilities You are not connected to the network even though the WEB TEMP is connected to an active server hub switch An average network has at least some traffic that causes the LED to blink Perform the procedure listed in Checking your TCP IP settings on page 32 The WEB TEMP is not receiving data and the network connection is verified by a network administrator Contact MCC technical support Refer to Getting help on page 34 for contact information 31 WEB TEMP User s Guide Ethernet Troubleshooting When the WEB TEMP is directly connected to a computer via a crossover cable or a single hub switch the LINK ACTIVITY LED flashes when data is transmitted or received over the Ethernet connection o Ifthe LINK ACTIVITY LED is not flashing there are two possibilities Your computer is not transmitting verify that your TCP IP settings are correct and that you are using a valid IP address for both your computer and WEB TEMP Perform the procedure listed in Check the network settings on the computer TCP IP settings below The WEB TEMP is not receiving contact MCC technical support Refer to Getting help on page 34 for contact information Check the network settings on the computer If the LINK ACTIVITY LED is not flashing verify that your TCP IP settings are correct and that you are using a valid IP address for both your computer and the WEB TEMP Use the ipconfig utility to return the TCP IP settings on your comp
52. ouples when possible Maximum input voltage between analog input and ground The absolute maximum input voltage between an analog input and the isolated AGND pins is 25 VDC when the WEB TEMP is powered on and 40 VDC when the WEB TEMP is powered off If you need to increase the length of your thermocouple use the same type of thermocouple wires to minimize the error introduced by thermal EMFs RTD and thermistor connections A resistance temperature detector RTD measures temperature by correlating the resistance of the RTD element with temperature A thermistor is a thermally sensitive resistor that is similar to an RTD in that its resistance changes with temperature thermistors show a large change in resistance that is proportional to a small change in temperature The main difference between RTD and thermistor measurements is the method used to linearize the sensor data RTDs and thermistors are resistive devices that require an excitation current to produce a voltage drop that can be measured differentially across the sensor The WEB TEMP features four pairs of current excitation sources IA to ID for measuring resistive type sensors Each current excitation terminal is dedicated to one pair of sensor input channels JA is the current excitation source for channel 0 and channel 1 B is the current excitation source for channel 2 and channel 3 22 WEB TEMP User s Guide Signal I O Connections a IC is the cur
53. pensates for any lead wire resistance and temperature change in lead wire resistance Connect your sensor with a four wire configuration when your application requires very high accuracy measurements Examples of a four wire single sensor measurement configuration are shown in Figure 7 and Figure 8 You can configure the WEB TEMP with either a single sensor per channel or two sensors per channel pair 24 WEB TEMP User s Guide Signal I O Connections Four wire single sensor A four wire measurement configuration is shown in Figure 7 The diagram on the left shows the sensor connected to the first channel in the channel pair The diagram on the right shows the sensor connected to the second channel in the channel pair The indicates the channel number Do not make connections to pin marked NC EE D ODOODODO OOOO AGND Sensor connected Sensor connected to the first channel to the second channel of a channel pair of a channel pair Figure 7 Four wire single RTD or thermistor sensor measurement configuration Four wire two sensor A four wire two sensor measurement configuration is shown in Figure 8 The indicates the channel number Do not make connections to pin marked NC vt 2002000000 C O ZO C L C H CAL AGND Ix O O O O Figure 8 Four wire two RTD or thermistor sensors measurement configuration When configured for four wire two sensor mode bot
54. plug power input The power supply provided with the board meets this specification at the rated total power supply current If a different power supply is used small line resistances could cause significant voltage drop between the power supply and the barrel plug input Note 17 This is the total current requirement for the WEB TEMP which includes up to 20 mA for the LEDs and 10 mA for the user voltage output Network Ethernet compliance Table 15 Ethernet compliance specifications Device type IEEE 802 3 Ethernet 10Base T Device compatibility IEEE 802 3 2003 10 Mpbs Media Access Control Ethernet connection Table 16 Ethernet connection specifications Ethernet type 10Base T Connector RJ 45 8 position Cable CAT 5 shielded unshielded twisted pair Length 100 meters max MAC address 00 12 71 Cx xx xx where xxxxx is the device s serial number Network factory default settings Table 17 Factory default specifications Factory default IP address 192 168 0 101 Factory default subnet mask 255 255 255 0 Factory default Gateway 192 168 0 1 Factory default DHCP setting Enabled Factory default user name webtemp Factory default password mecdaq Web Server Enabled 41 WEB TEMP User s Guide Specifications Network protocols Table 18 Factory default specifications Protocols implemented IP ARP ICMP DHCP
55. quivalent 40 to 150 C 0 50 C 37 WEB TEMP User s Guide Specifications Note 7 Error shown does not include errors of the sensor itself These specs are for one year while operation of the WEB TEMP unit is between 15 C and 35 C Contact your sensor supplier for details on the actual sensor error limitations RTD measurement accuracy Table 6 RTD measurement accuracy specifications RTD Sensor temperature Accuracy error C Accuracy error C Tempco C C maximum typical PT100 DIN 200 C 2 913 2 784 0 001 US or ITS 90 150 C 1 201 1 070 0 001 100 C 0 482 0 349 0 001 0 C 0 261 0 124 0 001 100 C 0 269 0 127 0 001 300 C 0 287 0 136 0 001 600 C 0 318 0 150 0 001 Note 8 Error shown does not include errors of the sensor itself The sensor linearization is performed using a Callendar Van Dusen linearization algorithm These specs are for one year while operation of the WEB TEMP unit is between 15 C and 35 C The accuracy and tempco specifications include the accuracy of the Callendar Van Dusen linearization algorithm The specification does not include lead resistance errors for 2 wire RTD connections Contact your sensor supplier for details on the actual sensor error limitations Note 9 Resistance values greater than 660Q cannot be measured by the WEB TEMP in the RTD mode The 660Q resistance limit includes the total resi
56. r 4 differential channels 4 wire input configuration with two sensors per channel pair 8 differential channels Note 1 Internally the WEB TEMP has four dual channel fully differential A Ds providing a total of eight differential channels The analog input channels are therefore configured in four channel pairs with CHO0 CH1 sensor inputs CH2 CH3 sensor inputs CH4 CH5 sensor inputs and CH6 CH7 sensor inputs paired together This channel pairing requires the analog input channel pairs be configured to monitor the same category of temperature sensor Mixing different sensor types of the same category such as a type J thermocouple on channel 0 and a type T thermocouple on channel 1 is permissible Note 2 Channel configuration information is stored on a EEPROM external to the isolated microcontroller by the firmware whenever any item is modified Modification is performed by commands issued over Ethernet from an external application and the configuration is made non volatile through the use of the EEPROM Note 3 The factory default configuration is Disabled The Disabled mode will disconnect the analog inputs from the terminal blocks and internally grounds AGND all of the A D inputs This mode also disables each of the current excitation sources Compatible sensors Table 3 Compatible sensor type specifications Parameter Conditions Thermocouple J 210 C to 1200 C K 270 C to 1372 C 50 C to 1768 C
57. r an alarm When a digital bit is configured as an alarm that bit is configured as an output and assumes the state defined by the alarm configuration If you need to log data or display data graphically The WEB TEMP displays current data read from the device and does not log or store historical data For logging or trending needs use the TracerDAQ software included on the Measurement Computing Data Acquisition Software CD WEB TEMP block diagram WEB TEMP functions are illustrated in the block diagram shown here RJ 45 Ethernet Port 5V DC Ethernet External MAC PHY 3 Power Controller 3 Ba 2 Olas 94 2 Zii TE O TE 5 2 Q 58 2 19 DIO Z 2 j Jl 222 o gt _ fODIiLAGNIPOM 1 Olas MRO EE E a a eee ee MCrOCIPDEE QPS 16 Mbit Microcontroller 500 V Isolation Barrier Flash memory Website Storage e l ole 2 12 Temperature Ols 62 o inputs laL ES 8 channels lgs SE 8 bit Q E 33 Q Microchip TC RTD lps 27o Microcontroller Thermistor olg I Configuration Semiconductor 9 wn EEPROM Q Figure 1 WEB TEMP functional block diagram 10 WEB TEMP User s Guide Introducing the WEB TEMP Software features For information on the features of InstaCal and the other software included with your WEB TEMP refer to the Quick Start Guide that shipped wi
58. r common 17 C3H CH3 sensor input 43 C4L CH4 sensor input 18 C3L CH3 sensor input 44 C4H CH4 sensor input 19 AGND Analog ground 45 NC No connect see Note 20 20 IB CH2 CH3 current excitation return 46 IC CH4 CH5 current excitation source 21 5V 5V output 47 NC No connect see Note 20 22 PU D Pull up down for digital outputs 48 GND Digital ground 23 DIOO Digital Input Output 49 DIO7 Digital Input Output 24 DIO1 Digital Input Output 50 DIO6 Digital Input Output 25 DIO2 Digital Input Output 51 DIO5 Digital Input Output 26 DIO3 Digital Input Output 52 DIO4 Digital Input Output Note 20 Do not make connections to pins marked NC 43 C Declaration of Conformity Manufacturer Measurement Computing Corporation Address 10 Commerce Way Suite 1008 Norton MA 02766 USA Category Electrical equipment for measurement control and laboratory use Measurement Computing Corporation declares under sole responsibility that the product WEB TEMP EU EMC Directive 89 336 EEC Electromagnetic Compatibility EN 61326 1997 Amendment 1 1998 Emissions Group 1 Class A EN 55011 1990 CISPR 11 Radiated and Conducted emissions Immunity EN61326 Annex A JEC 61000 4 2 1995 Electrostatic Discharge immunity Criteria B JEC 61000 4 3 1995 Radiated Electromagnetic Field immunity Criteria B TEC 61000 4 4 1995 Electric fast transient burst immunity Criteria B JEC 61000 4 5 1995 Surge immuni
59. re configurable with nstaCal or the web interface JnstaCal must be used if any of the network parameters need to be changed such as the IP address of your device Configuration settings are stored in non volatile memory in EEPROM and are loaded on power up Refer to the sections Using the web interface on page 16 and Configuring the WEB TEMP using InstaCal on page 17 for detailed information Connecting to a LAN for communication across networks In order to communicate with the WEB TEMP from a computer connected to a different network such as over the internet you must change the network configuration of the network router In the following procedure the WEB TEMP is installed at the host LAN and the computer is installed at the client LAN Caution This procedure should only be performed by a network administrator or computer professional Incorrect settings can significantly disrupt a network 1 Connect the WEB TEMP to a LAN host that has access to the Internet using the cable provided The Link Activity LED will illuminate steady green to indicate that you have established a valid Ethernet connection 2 Configure the WEB TEMP at the host LAN to access the web page o Assign a fixed private static IP address to the WEB TEMP o Configure the firewall router to map a static public IP address to the private IP address assigned above Record this address for use in step 3 o Configure the firewall router to
60. rent excitation source for channel 4 and channel 5 D is the current excitation source for channel 6 and channel 7 The WEB TEMP makes two three and four wire measurements of RTDs 100 Q platinum type and thermistors Use InstaCal or the web interface to select the sensor type and the wiring configuration Once the resistance value is calculated the value is linearized in order to convert it to a temperature value A 32 bit floating point value in either temperature or resistance is returned by software RTD maximum resistance Resistance values greater than 660 Q cannot be measured by the WEB TEMP in the RTD mode The 660 Q resistance limit includes the total resistance across the current excitation Ix pins which is the sum of the RTD resistance and the lead resistances Thermistor maximum resistance Resistance values greater than 180 kQ cannot be measured by the WEB TEMP in the thermistor mode The 180 kQ resistance limit includes the total resistance across the current excitation Ix pins which is the sum of the thermistor resistance and the lead resistance Two wire configuration The easiest way to connect an RTD sensor or thermistor to the WEB TEMP is with a two wire configuration since it requires the fewest connections to the sensor With this method the two wires that provide the RTD sensor with its excitation current also measure the voltage across the sensor Since RTDs exhibit a low nominal resistanc
61. rminals The screw terminals provide connections for sensors digital channels power and ground Detailed information is provided in Chapter 3 Signal I O Connections beginning on page 19 Ethernet port The WEB TEMP has one 1OBASE T communication port The port connector is an eight position RJ 45 connector Use the Ethernet cable provided to connect the device to a local or wide area network or to a hub attached to a single computer Use a CAT S or higher shielded or unshielded twisted pair crossover cable to connect directly to a computer The maximum communication distance without using a repeater is 100 meters Data can transmit up to 100 meters at speeds of up to 100 Mbps using only one crossover Ethernet cable connected to your computer External power connector Use the supplied external power supply MCC p n PS 5V2AEPS to power the WEB TEMP 29 WEB TEMP User s Guide Functional Details POWER COMM LED The POWER COMM LED upper LED is steady green when external power is supplied The WEB TEMP has an on board voltage supervisory circuit that monitors the 5 V external power supply The table below explains the function of the POWER COMM LED LED Indication Steady green 4 75 V to 5 25 V external power is supplied to the WEB TEMP Off Check the following External power is not supplied verify that the supply is connected to the external power connector A power fault has occurred A power fault occurs when
62. stance across the current excitation Ix pins which is the sum of the RTD resistance and the lead resistances Note 10 For accurate three wire compensation the individual lead resistances connected to the Ix pins must be of equal ohmic value To ensure this use connection leads of equal lengths Thermistor measurement accuracy Table 7 Thermistor measurement accuracy specifications Thermistor Sensor temperature Accuracy error Accuracy error Tempco C C maximum C typical C 2252 Q 40 C 0 001 0 0007 0 001 0 C 0 021 0 008 0 001 50 C 0 263 0 130 0 001 120 C 3 473 1 750 0 001 5000 Q 35 C 0 001 0 0006 0 001 0 C 0 009 0 004 0 001 50 C 0 115 0 049 0 001 120 C 1 535 0 658 0 001 10000 Q 25 C 0 001 0 0005 0 001 0 C 0 005 0 002 0 001 50 C 0 060 0 028 0 001 120 C 0 771 0 328 0 001 30000 Q 10 C 0 001 0 0005 0 001 0 C 0 002 0 001 0 001 50 C 0 019 0 009 0 001 120 C 0 267 0 128 0 001 38 WEB TEMP User s Guide Specifications Note 11 Error shown does not include errors of the sensor itself The sensor linearization is performed using a Steinhart Hart linearization algorithm The accuracy and tempco specifications include the accuracy of the Callendar Van Dusen linearization algorithm These specifications are for one year while operation of the WEB TEMP unit is between 15 C and 35 C The specification does not i
63. t floating point value in either voltage or temperature Digital I O connections Connect up to eight digital I O lines to the screw terminals labeled DIOO to DIO7 Configure each digital bit for either input or output All digital I O lines are connected through 47k to the PU D pin which is floating by default For a pull up configuration connect the PU D terminal to the 5V terminal For a pull down configuration connect the PU D terminal to the GND terminal When configuring the digital bits for input the digital I O terminals can detect the state of a TTL compatible device The ground GND terminal pin 48 provides a common ground for the digital I O channels Refer to the schematic shown in Figure 10 If the switch is set to the 5V input DIOO reads TRUE 1 If the switch is moved to GND DIOO reads FALSE 0 DIOO gt Digital GND 5V Figure 10 Schematic showing switch detection by digital channel DIOO When configuring the digital bits use the switch on the side of the device to set the voltage to either 5 V or 3 3 V see page 30 for more information Refer to the digital I O specification on page 40 for the maximum and minimum threshold levels for each setting If a digital bit is set up as an alarm that bit is configured for output and assumes the state defined by the alarm configuration Caution The ground pin labeled GND pin 48 is isolated from the AGND pins and from earth ground If a connection is made t
64. tact MCC technical support Refer to Getting help on page 34 for contact information Contact your network administrator regarding network settings Changes to network configuration should only be performed by your network administrator or computer professional 33 WEB TEMP User s Guide Ethernet Troubleshooting Verify the network path to a remote WEB TEMP You can ping the network where the WEB TEMP is installed to verify that the network path from the computer to a device installed on a different network is set up correctly Enter ping followed by the public IP address of the network where the WEB TEMP is installed Ifa Request timed out error or a Destination host unreachable message is returned verify that you have the correct public address for the network where the WEB TEMP is installed If you get a response from the ping of the public network but still cannot communicate with the WEB TEMP check the following A unique fixed static IP address has been assigned to the WEB TEMP The firewall is configured to allow incoming traffic to the HTTP port port 80 for access to the web page The firewall is configured to allow incoming traffic to the UDP port port 54211 by default for access through nstaCal and the Universal Library The network at the public IP address is configured to access the fixed address assigned to the WEB TEMP Contact your network administrator regarding firewall settings
65. tation into the body or b support or sustain life and whose failure to perform can be reasonably expected to result in injury Measurement Computing Corporation products are not designed with the components required and are not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis of people Table of Contents Preface About this User s G ldeniz iaiaaeaia a naaa anaana eaaa inead iaaea aat aaepe Eiaeai 8 What you will learn from this user s QUIdC ee eeceeecseeeecneeeeceseeecssecseesecsevsecsaecesaecaesaecseesecnaseecsaseeeaesateaeenees 8 Conventions inthis us rs guides nce inarin ee e ates reari a a E E i ene i ei aiie 8 Where to find more information Chapter 1 Introducing the WEB TEMP cccsscssssceseeeeeeeeeeeeeesaaeenseeeeeaeeesaaesaseeeeneeeeseaesasaaesaseeeeeeeeeseaesaseneneeaes 9 Webb interface cs cvscsisssacciecscavcactacescheee skeen denstasdecuanesabee canst con dbecebencavebeda cavceadecauedung cuuce ide calebedaas O RE RETE E Raiss 9 TCP IP cOnneCti oni svececesvehsieetvescecrevgaitte A tact A E A Aenean ioe A E ebeaveseiee eevee oat ei aia casters 9 Browser Tequire ment ieee cicssecteucicedei to a ae E ESSA E E E E AE E aa Ae A A E EAE REE AS 9 WEB TEMP features Temperature channels Alaris pa nrorseciiasirrii Digital I O channels WEB TEMP block diasrai o spiti ietie esap ereraa ea Ea E EEN a EREE SEa Opa ppsae
66. th your device The Quick Start Guide is also available in PDF at www mccdag com PDFmanuals DA Q Software Quick Start pdf Check www mccdaq com download htm for the latest software version 11 Chapter 2 Installing the WEB TEMP What comes with your WEB TEMP shipment The following items are shipped with the WEB TEMP Hardware WEB TEMP Ethernet cable standard You can optionally purchase a crossover cable CAT 5 or higher to connect the WEB TEMP to an Ethernet card installed in a computer External power supply and cord 10 watt AC power adapter MCC part number PS 5V2AEPS 12 WEB TEMP User s Guide Installing the WEB TEMP Additional documentation In addition to this hardware user s guide you should also receive the Quick Start Guide available in PDF at www mcecdag com PDFmanuals DA O Software Quick Start pdf This booklet supplies a brief description of the software you received with your WEB TEMP and information regarding installation of that software Please read this booklet completely before installing any software or hardware An overview of installation options is provided in the WEB TEMP setup options page that ships with the device Detailed installation information is provided in this user s guide Unpacking the WEB TEMP As with any electronic device take care while handling to avoid damage from static electricity Before removing the WEB TEMP from its packaging
67. tion refer to the WEB TEMP setup options page that shipped with the device Chapter 1 Introducing the WEB TEMP The WEB TEMP is a temperature measurement device with a built in web server You can connect the device to an Ethernet port or hub start up your browser and view current data The WEB TEMP is fully supported by the Universal Library and TracerDAQ These software programs are included on the Measurement Computing Data Acquisition Software CD Web interface The WEB TEMP s embedded web interface provides access to current data and configuration settings using a standard web browser Browse to the device s home page by entering the URL that is printed on the device into the browser View current sensor measurements channel data and configure hardware options from the device s web pages Only one user can change configuration options on the device at a time The web interface is built into the device s firmware and does not need to be installed on a computer No external software is required other than a web browser and a TCP IP connection TCP IP connection A TCP IP connection is required to access the web interface Connect the device s 10Base T Ethernet port to a local or wide area network using the supplied Ethernet cable to a single computer through a hub using the supplied Ethernet cable or directly to a computer using a standard CAT 5 crossover cable Browser requirement The web browser used to access the WE
68. tween the channels that constitute a channel pair cannot be mixed However thermocouple types within a channel pair can be mixed WEB TEMP User s Guide Introducing the WEB TEMP The WEB TEMP provides four integrated cold junction compensation CJC sensors for thermocouple measurements and built in current excitation sources for resistive sensor measurements Each CJC sensor is dedicated to one of the four channel pairs An open thermocouple detection feature lets you detect a broken thermocouple An on board microprocessor automatically linearizes the measurement data according to the sensor category Alarms The WEB TEMP features eight independent temperature alarms Each alarm controls an associated digital I O channel as an alarm output The input to each alarm is one of the temperature input channels The output of each alarm is software configurable as active high or low The user configurable threshold conditions activate each alarm When an alarm is activated the associated DIO channel is driven to the active output state selected Digital I O channels Eight digital I O channels are provided to communicate with external devices and to generate alarms The digital bits are software programmable for input or output The digital output voltage is switch selectable for 3 3 V or 5 V logic A screw terminal is provided for pull up or pull down configuration The digital I O channels power up in input mode unless the bit is configured fo
69. ty Criteria A TEC 61000 4 6 1996 Radio frequency common mode immunity Criteria B JEC 61000 4 8 1994 Power frequency magnetic field immunity Criteria A TEC 61000 4 11 1994 Interrupt immunity Criteria A Declaration of Conformity based on tests conducted by Chomerics Test Services Woburn MA 01801 USA in August 2007 Test records are outlined in Chomerics Test Report EMI4891A 07 We hereby declare that the equipment specified conforms to the above Directives and Standards toga Carl Haapaoja Director of Quality Assurance Measurement Computing Corporation 10 Commerce Way Suite 1008 Norton Massachusetts 02766 508 946 5100 Fax 508 946 9500 E mail info mccdag com www mccdag com
70. ucvadespbachasstuistadetes 10 Software feale Sena E E E E E E E a Mua E E 11 Chapter 2 Installing the WEB TEMP sssssnunnnuunnuunnunnnunnnnnnnunnnnunnnunnnunnnunnnunnnunnnnnnnnnnnnnnnnnnnnnnn ennn nnnn ennn nnnn ennnen nnana 12 What comes with your WEB TEMP shipment cesccsseesceeceeseeeseeeeceseceseeeseceseeeaeceaecnaecaaecaeeeaeeeneeneeenees 12 Hardware Additional documenta oMi nie a ar REEE E noses RAEE N A E EEEE E A AN E DERESE 13 Unpacking the WEB TEM P r ea eE E Seine E EE OE ET a A EE A E aa 13 Installing the softwares sis scieiiie lh Geist aida ae lok ame alee aia 13 Connecting the AC power adapter senegre eir sie divans aE EEEE T a NA E Ea e dente 13 Connecting th WEB TEMP scenei a a Alay Sie Eaa V ir eile 13 Connecting to a LAN for communication within a network cece esesseeseeeceeceeceesesseeseecesecsecsessesseeaeeeceeceesseesesseeseaees 14 Connecting to a LAN for communication across NetWOTKS essseeeeesesesessseertstersrstststeetstntrtstttenenrersrststetsrsterntetrtreeet 14 Connecting the WEB TEMP directly to a COMPUEEL eee eeeeceecteeseeseeseeecsecsecseesecseeseacsecsecsecsesaeeseeesaseesaeesesseeaeeaees 15 Using the web mtertacess seeesiadited fret ctuse a bob E paced A pa neal r 16 Logging intoa device inerte nees rE NSA Sen cova decease ces dats cash seats Sup ecove euch end OSa EEEE E eset SEENE AE coaseoch EPEE E 17 Configuring the WEB TEMP using InstaCal s eeeeeesrsesesesesst
71. uter 1 Open a DOS Command Prompt window from your computer 2 Enter ipconfig and press the Return key Your computer will display all TCP IP network configuration values currently set on the computer An example is shown here cx Command Prompt jol x Microsoft Windows XP Version 5 1 2600 lt C Copyright 1985 2661 Microsoft Corp C Documents and Settings JMS gt ipconf ig Mindows IP Configuration Ethernet adapter Local Area Connection Connection specific DNS Suffix mccdaq com 207 190 229 197 255 255 255 8 Default Gateway C Documents and Settings JMS gt o Ifthe IP Address or Subnet Mask information are all 0 s or if the first three sets octets of numbers in either the IP address or Subnet Mask do not match the device s network settings then the computer will be unable to communicate with the WEB TEMP Contact your network administrator or computer professional Check whether DHCP is enabled on the network server You can determine whether DHCP is enabled on the network server open a DOS Command Prompt and enter ipconfig all Your computer will display additional TCP IP information including the status of DHCP on the network server Contact your network administrator regarding network settings Changes to network configuration should only be performed by your network administrator or computer professional Verify that the computer is connected to the network You can ping P
72. wer off Input impedance 5 Gigohm power on 1 Mohm power off Input leakage current Open thermocouple detect disabled 30 nA max Open thermocouple detect enabled 105 nA max Common mode rejection ratio JIN 60 Hz 100 dB min ADC Resolution 24 bits ADC No missing codes 24 bits Input coupling DC Warm up time 30 minutes min Open thermocouple detect Automatically enabled when the channel pair is configured for thermocouple sensor The maximum open detection time is 3 seconds CJC sensor accuracy 15 C to 35 C 0 75 C to 0 5 C max 0 C to 55 C 1 5 C to 1 25 C max 35 WEB TEMP User s Guide Specifications Channel configurations Table 2 Channel configuration specifications Sensor Category Conditions Max number of sensors all channels configured alike Disabled All temperature input channels are disconnected from screw See Note 3 terminals and internally connected to AGND Thermocouple Note 1 8 differential channels Semiconductor sensor 8 differential channels Note 1 RTD and Thermistor 2 wire input configuration with a single sensor per channel pair 4 differential channels Note 1 2 wire input configuration with two sensors per channel pair 8 differential channels 3 wire configuration with a single sensor per channel pair 4 differential channels 4 wire input configuration with a single sensor per channel pai
73. y Deleting am ARP tablero Enea E E taunt aces lacs sh EE a a e aiora aE eRe dard tues SEAE ES PS e tees wean enat hel E A E E E E Chapter 6 Specifications Analog Mputa E R ca EE EEEE A I O EE EEE ENEA a ESEA ETES Channel configurations sessen an ea a a e a a i a a a E 36 Compatible Sensor Sen re a eea oat aaae eera Eee a aA aa re EEA EE EE AERE ESEE E oaee NESER E EERE in Epa 36 A COULACY tar ntas E E R e sue E N e E E E E E A 37 Thermocouple measurement ACCULACY oo enee sesia eaea EE E EE EEEn Eer A a EAA AEA A Ea ERE FEES 37 Semiconductor sensor measurement ACCULACY 00 eeescesceeeseteeseeseeseeseeseeececsecseesecseeseesceaeseesecsesseeseeseeaeeseeeeesaeesesaseaeeaees 37 RID imeasurement ACCuracy nosen stsves ies toe EAE EE A NEAT AEA o A A toe E A TERS 38 Thermistor measurement accuracy ooren oneer eE a Sate LEE RE RE EEE E EA RE EEEE a ER E E AE AE ER 38 Throughput rateta ar a a e e A a A A a A E 39 Disitalanput Outputt cie e eo en EEIE EEE EEEE ET EEE EEE EEEE E E E E 40 Temperature alarms esii noresi nenit ie tenses Asn Mth eee eae ERE eE EEE EE Simin tse aE ERES 40 MeO A A R EI 40 Microcontrollers ss ninae a a E aee a aE E a e aeaee teries 40 POWEL n eE aTe E NE E cis E RE E veda unde E E NEEE AEE REEE TETE iT 41 ASO U A T E A TE R 41 WEB TEMP User s Guide Ethernet COmplane esise ieei re eeir reitit depeanavernded se EEE aa EAE EE EEE E E E ages Res anton EE 41 Ethernet connection Network factory default setin

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