Software Manual - Lawson Labs, Inc.
Contents
1. Client for Microsoft Networks E Kaspersky Anti Virus NDIS 6 Filter E QoS Packet Scheduler 5 File and Printer Sharing for Microsoft Networks ntemet Protocol Version 6 TCP IPv6 Pv 4 Link Layer Topology Discovery Mapper 1 0 Driver Link Layer Topology Discovery Responder lt K ve ntemet Protocol Version 4 TCP 9 K E EE E Install Uninstal Properties Description Transmission Control Protocol Intemet Protocol The default wide area network protocol that provides communication across diverse interconnected networks Figure 7 The Local Area Connection Properties dialog box 6 Now the Internet Protocol Version 4 TCP IPv4 Properties dialog should be displayed Select Use the following IP address Enter 10 1 1 1 in the IP address box 255 255 255 0 in the subnet mask box and 10 1 1 1 in the default gateway box The dialog should now look like that of Figure 8 Click OK 7 Internet Protocol Version 4 TCP IPv4 Properties 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 IP address dO lia ds E y Subnet mask 255 255 255 0 Default gateway dO qb dos O Use the following DNS server addre2. The Internet Protocol TCP IP Properties dialog box 6 Click OK in the Local Area Connection Properties dialog and click Close in the Local Area a Connection Status dialog Choose Run from the Start menu Type in ping x x x x where x x x x is the IP address of your Model 401 The first three numbers of the IP address will always be 10 1 1 The fourth will be unique Click OK to perform the ping test The ping test should indicate successful communication with the Model 401 Instructions for Windows Vista l Make sure that the Model 401 is connected to your PC s network see Hardware setup Choose Control Panel from the Start menu Click on Network and Internet then click on Network and Sharing Center On the left hand side of the window under Tasks click on Manage network connections From the new window double click on the network connection associated with the Ethernet connection to the Model 401 Usually this is the Local Area Connection item Click on the Properties button in the new window The Local Area Connection Properties window is displayed Select the Internet Protocol Version 4 TCP IPv4 component Figure 7 and click the Properties button Model 401 Software Manual Rev B 04 10 09 8 r Local Area Connection Properties x Connect using amp Realtek RTL8168B 8111B Family PCI E Gigabit Ethemet Configure This connection uses the following items DM
3. debug 0 will turn off this feature Run M40xVB You will see the log file M40x dbg in M40xVB s folder Operate the Model 401 normally When you see an error close M40xVB Make a backup copy of M40x dbg in a separate folder to avoid it being overwritten the next time M40xVB runs Sys i G2 ES To get the error history from the Model 401 1 Connect to the Model 401 and click the Self Test button Check the last line of the self test information If it reads Valid Log Memory skip to step 2 If it reads Corrupted log memory the error history memory is corrupted The memory must be cleared before any error can be stored Click the Show Errors button in the lower left corner of the main window In the dialog click the clear error logs button to clear the memory Click Yes at the prompt Close the window 2 Click Expanded Error Log to start storing error information in the Model 401 s error logs Click the Self Test button and check the second to last line of the self test information for Error Log Enabled to confirm that error information is being stored in the Model 401 Model 401 Software Manual Rev B 04 10 09 18 3 Operate the Model 401 normally If you see an error during scanning stop scanning and click the Self Test button If the Model 401 has recorded any errors then the Show Errors button in the lower part of the main window will turn red Click the Show Errors button to see the errors 4 To write th
4. is assigned by the internet service provider to the router and is visible outside the local network After making the above changes use the router s external IP address to operate the Model 401 from a web browser or from the demo app If the external IP is dynamic and you are not able to connect to the Model 401 check with the internet service provider to make sure the lease hasn t expired In this case only 1 Model 401 can be accessed remotely In the second case the Model 401 is assigned a regular IP address This situation is typical of large corporations and universities who have been assigned an IP address range by their internet service provider Contact the network admin for the Model 401 s IP address If the IP is dynamic and you are unable to connect to the Model 401 make sure the IP hasn t expired Model 401 Software Manual Rev B 04 10 09 21
5. itself and drops the connection Reconnect and click the Self Test button to verify that the operation succeeded You can also check whether the Model 401 RTC is set correctly by clicking on the RTC Diff button This operation checks the Model 401 s RTC and displays the difference from the host s time Set the internal A D data rate Select the internal data rate in the box above Dev Rate If you don t find the desired data rate in the selection box close the selection box and type in the desired the data rate 10 1000 Hz Click the Send Rate button to set the Model 401 s data rate The actual rate will be rounded to the closest achievable rate and displayed in event log Get the channel voltage and the digital input byte First select the channel in the selection box above Channel valid channels are 0 1 6 and 7 and click the Send button Then click the Get Conv button to get the channel voltage and update the digital input value shown above Digital Input Set up the scan If you haven t done so already set up the desired scan type by following the steps shown below These settings are saved in a configuration file so they are remembered even after M40xVB is closed Select the number of samples for averaging in the selection box labelled Avg This is a running average imposed by the software It will not change the scan rate To set up a single channel scan 1 Select the channel you wish to scan in the selection
6. rsi 10 Section 3 Model 401 operating MOWES iicccccscccssconsssvonesssonessvsnsnsoossssevasssscssseossesuesscouesseonsaceesponssseedense 11 POTE TINO aa lion ra ada alam a Ea a ad an esk oia een lk alam a 11 CAM IMOGS an RR aa pe DOR RR Sadik azal ERREI ND az A E 11 STAA e aha e SC alll AEE ME ON A E E a o 11 Mis Chant scancerie iat gla A lll ate E E E E 11 Multi channel calibration scan caspa atari curitiba ata ape NG tay neues iii 12 Extended Sca pa ie e ane Ge elik ein Ga RR li yl se 12 Extended calibration Scans ea a Bl e li laa e 12 ECOS A e YA e eee Ka A ee e ev 12 Section 4 Operating the Model 401 from a web browser ecs00000000000000000002000000000000000000000000000 13 Connect to a Motel ad esya anla la blade soe in eda all dal aan ous salad ol isli EES 13 Set the internal A D data Tate ossos a a A el GU alda Nk 13 Send digital ONU MR Ni EAE Ye Nowe estes a eN AR 13 G t a conversion and a digital input OR e mais sesler adaga a a LAMA de e 13 Get the firmware version and the configuration settings 13 Calibrate siso oi SEE RD A Vee Vee e Or 13 Section 5 Operating the Model 401 from M40XVB sccccssccsssscccssscsscsscscssscccssccsscesecsssceseseeees 14 Tostallati ON ain sora ES e ON SEN E eN da RE KN 14 GE LORM a a en ra Saba an gas ali sa dalga yea maa sai ma sa ann gm re 14 Connect tote a ye e lA KERE EK ME A K a q Do A Sales 14 Get the configuration and the firmware Version sia lale a
7. s original network settings Then change your PC s IP address to 10 1 1 1 with subnet mask to 255 255 255 0 The following instructions explain how to make this change Remember after changing your network settings you may not be able to access other PC s on your network until you restore your original network settings Instructions for Windows 95 98 ME 1 Make sure that the Model 401 is connected to your PC s network see Hardware setup Open the Control Panel from the Start menu and double click on the Network icon The Network dialog box will be displayed 3 Highlight the TCP IP component for the network adapter that is connected to your Model 401 device Figure 1 and click the Properties button Network x Configuration Identification Access Control The following network components are installed E Client for Microsoft Networks Bl Microsoft Family Logon EP D Link DFE 530TX PCI Adapter ff Dial Up Adapter Y TCP IP gt D Link DFE 530Tx PCI Adapter TCP IP gt Dial Up Adapter Add Remove Properties Primary Network Logon Microsoft Family Logon File and Print Sharing Description TCP IP is the protocol you use to connect to the Internet and wide area networks Figure 1 The Network dialog box Model 401 Software Manual Rev B 04 10 09 4 4 Now the TCP IP Properties dialog should be visible As shown in Figure 2 enter the IP address 10 1 1 1 in the I
8. the DHCP server within the timeout period then the Model 401 will use the last assigned fixed IP address Note that if your network is slow or the DHCP server is overloaded you may need to stretch the Model 401 s DHCP timeout period to ensure the Model 401 gets assigned a dynamic IP address The maximum DHCP timeout allowed is 15 seconds Ifyou prefer to use only a fixed IP address then use the use the M40xVC or M40xVB sample applications to set the DHCP timeout to O seconds Media Access Control MAC address MAC addresses are 48 bits long They are of the form XX XX XX XX XX XX where X is a hexadecimal digit All ethernet capable devices are assigned a globally unique MAC address by hardware manufacturers MAC addresses cannot be changed Model 401 Software Manual Rev B 04 10 09 3 Section 2 Initial network setup Hardware setup If your PC is already connected to an Ethernet network then connect one end of a regular Ethernet cable to the Model 401 and the other end to a spare port on your hub Otherwise connect one end of a cross over Ethernet cable to the Model 401 and the other end to your PC s network card In this case you need to use a fixed IP address for setup Connect to the Model 401 for the first time All Model 401s are initially assigned an IP address in the 10 1 1 subnet The Model 401 s factory assigned IP address can be found on a sticker attached to the top of the ethernet connector Make a note of your PC
9. 11 Multi channel calibration scan This scan type is similar to the multi channel scan except that channel 7 the offset calibration channel is always included in the scan For example if a multi channel calibration scan is reguested with one channel channels O and 7 will be in the scan At the end of each scan the voltage read from channel 7 is subtracted from all the other voltages to provide automatic zero drift suppression Extended scan Model 401s with firmware version 11 14 2005 and later support extended scanning In an extended scan one or more external multplexers can be used to expand the analog A D input channels 0 and 1 to up to 16 subchannels each The lower 4 bits of the digital output byte are used to select the subchannel while the upper 4 bits of the digital output byte are still available for application use Just like in regular multi channel scans the channels and or subchannels in the scan must be selected before starting the scan and cannot be changed during the scan Only contiguous subchannels can be selected for extended scan The input channel selection order is fixed The input channel selection starts from the first indicated subchannel and continues to last indicated subchanel on A D input channel 0 Then from the first indicated subchannel to the last indicated subchannel on A D input channel 1 Then channel 6 if in the scan and finally channel 7 if in the scan Extended calibration scan This scan ty
10. Model 401 TCP P Interfaced 24 Bit Data Acquisition System Software User Manual Rev B 04 10 09 Lawson Labs Inc Phone 800 321 5355 Phone 610 725 8800 Fax 610 725 9344 www lawsonlabs com lawsnlab lawsonlabs com Table of Contents la a e le e TEP OP e 1 Section 1 Introduction to POP ekaaierd rs ersisisnez yk den d ne sesayeblnme n ne lele denli eziedsikedini 2 P AAC Se aa baz ss si a E ile le a laa amd ime 2 BUDO ELSE ei a an all ra EE lie T ln DU Da ila al e itv ae 2 SAVE VA RM ke e Ad Ri A e e ie 3 Dynamic Host Configuration Protocol DHCP aya a dest GL Ba RM 3 Media Access onto bi MAL addres Sama pal e im amam noe 3 Section 2 Initial network Stu pissisecsccsussccsussscondsseoevssascvesesavenevanciousesdeveosvcastoensderenssesciesdceasiedssuensuvessedevers 4 Hardware a e ll Da ll a a anlami a A ant m ied 4 ConnecttotheModel401forthefirsttime 4 Instructions for Windows 95 08 ME ea asa seyis lal sekel eagle lala lap kaka 4 Instructions for Windows NT 20005 siman oil endise ediy ain yaland ba n dia nana in 5 Instructions for Windows Da ga cada a dell sale ce alyssa Cog ayi e aya r n ali ada 7 Instructions for Windows Vista Sa a amala al AD E A E S a 8 ConnectingtotheModel401withadynamiclPaddress 10 BS CAML M ZE Bae ak ea a a ll a sa a e da An 10 Assigning a hew AP Alem a eye Oe Mies ee iy ki aul Seyi elek sa leyl iyi
11. P Address box and enter the subnet mask 255 255 255 0 in the Subnet Mask box TCP IP Properties x Bindings Advanced Neslos DNS Configuration Gateway WINS Configuration IP Address An IP address can be automatically assigned to this computer If your network does not automatically assign IP addresses ask your network administrator for an address and then type it in the space below Obtain an IP address automatically Specify an IP address Figure 2 The TCP IP Properties dialog box 5 Click OK in the TCP IP Properties dialog and click OK in the Network dialog You will be asked to restart your computer 6 After restarting your computer choose Run from the Start menu Type in ping x x x x where x x x x is the IP address of your Model 401 The first three numbers of the IP address will always be 10 1 1 The fourth will be unique Click OK to perform the ping test The ping test should indicate successful communication with the Model 401 Instructions for Windows NT 2000 1 Make sure that the Model 401 is connected to your PC s network see Hardware setup Choose Settings gt Control Panel from the Start menu Double click on the Network and Dial Up Connections icon 3 From the new window double click on the network connection associated with the Ethernet connection to the Model 401 Usually this is the Local Area Connection icon 4 After clicking on the icon the Local Are
12. They must always use IP addresses Information is split into packets before being transmitted At the receiver packets that arrive out of order are sorted and assembled to form the original information TCP IP provides reliable communication It handles error detection and retransmission An Ethernet network can connect to another Ethernet network or the Internet through a gateway or router IP address An IP address is made up of 4 numbers separated by dots for example 10 1 1 12 Every Model 401 has a sticker with the IP address assigned at the factory The user can change the Model 401 s IP address using the M40xVB sample application The Model 401 can also be assigned a dynamic temporary IP address Subnet mask There are two parts to an IP address the subnet address and the host address The subnet address identifies a network The host address identifies a device on the network The 0 s in a subnet mask indentify the host address bits the rest is the subnet address For example if the subnet mask is 255 255 255 0 then bits 31 8 make up the subnet address and bits 7 0 make up the host address Therefore to get the subnet address of an IP address you need to bitwise AND the IP address with the subnet mask When a device source wants to transmit data to another device destination it uses the subnet mask to get the destination subnet address If the destination subnet is the same as the source then the sour
13. a Connection Status dialog is displayed Click on the Properties button 5 The Local Area Connection Properties window is displayed Select the Internet Protocol TCP IP component Figure 3 and click the Properties button Model 401 Software Manual Rev B 04 10 09 5 Local Area Connection Properties 2 x General Connect using EF Realtek RTL8139 4 PCI Fast Ethemet Adapter Components checked are used by this connection 5 Client for Microsoft Networks B File and Printer Sharing for Microsoft Networks Internet Protocol TCP IP Install Uninstall Properties Description Transmission Control Protocol Internet Protocol The default wide area network protocol that provides communication across diverse interconnected networks Show icon in taskbar when connected OK Cancel Figure 3 The Local Area Connection Properties dialog box 6 Now the Internet Protocol TCP IP Properties dialog should be displayed Select Use the following IP address Enter 10 1 1 1 in the IP address box 255 255 255 0 in the subnet mask box and 10 1 1 1 in the default gateway box The dialog should now look like that of Figure 4 Click OK Internet Protocol TCP IP Properties 2 x 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 sett
14. alel Gali Mini New 14 Setthe confiontaon Capas bodies ai ipek adale Sal di allel akan canl di Bil ene 14 Ge l a Gl a i a Gael A E a ne a SA EEE 14 Set the Model 401 real time clock RTC tomatchthePCclock 15 Sette internal AD Catarata E E A yila elimde ae 15 Get the channel voltage and the digital input DUE isem seki alada sedan AD N Z Gi 15 SEE UP he S N Sama Sare dia Bala bab alik ua a Bld bea cas sel A nda k lelik 15 tL TNS SCAN ap EA e ll AE ape cao ued nz kil a 16 During e e REN E e e LAN T 16 S nd dieital output ss Kamar hel la res Fa cada hon A Buzuki a ety encena o 17 Plot SCANS sia ss sanad r Alma AOU Be eA Rah na Ball Ta Appendix AS TOES aos suchas cascessnccensedi ces tesiddstastaaadesnsacsacsededucusttdoepecsbeassaccessennceceduass acess elisa sidade Appendix B Troubleshooting seessessesseesoesoessossoesoeesossoesoeesossoeseoesossoessoesossoeseossossoessoeseoosssoosessoeeeseosse Application note Accessing the Model 401 from a remote site or from a different network Introduction This purpose of this document is to explain how to connect to and configure the Model 401 Two software interfaces for the Model 401 are discussed the web browser interface and the M40xVB sample application This document also gives a brief introduction to TCP IP protocol and other important concepts For information on interfacing with the Model 401 from your own appli
15. box above Channel valid channels are 0 1 6 and 7 and click the Send button next to it 2 Uncheck the Ext Scan check box if checked 3 Uncheck the Cal Scan check box if checked 4 Select Single Chan To set up a multi channel scan 1 Select the number of channels you wish to scan from the selection box labelled Num chans 2 Uncheck the Ext Scan check box if checked 3 Uncheck the Cal Scan check box if checked 4 Select Multi Chan To set up a multi channel calibration scan 1 Select the number of channels you wish to scan from the selection box labelled Num chans 2 Uncheck the Ext Scan check box if checked 3 Check the Cal Scan check box if unchecked 4 Select Multi Chan Model 401 Software Manual Rev B 04 10 09 15 To set up an extended scan with external multiplexer s Select Multi Chan Check the Ext Scan check box Click the Setup button next to it Select the first and the last subchannels on A D CHANNEL 0 Repeat the same for A D CHANNEL 1 Check the Calibration Scan check box in the lower right corner to included channel 7 in the scan and perform automatic zero drift suppression the voltage from channel 7 is subtracted from the other channels at the end of each scan 7 Check Calibration Scan Subchan 0 offset to use subchannel 0 as the offset calibration channel during a calibration scan 8 Check Mux Inverted if your external multiplexer expect
16. cation the information presented here is a useful introduction to the Model 401 software interfacing capabilities but you will need to consult the Model 401 API Documentation for in depth information on the Model 401 API The Model 401 API Documentation can be found in the Model 401 SDK and also can be found separately from www lawsonlabs com For more information on the Model 401 hardware itself consult the Model 401 Hardware Manual This manual describes how to connect power analog inputs digital inputs and digital outputs to the Model 401 This document can also be found in the Model 401 SDK and separately from www lawsonlabs com Note Information sent through the network to and from the Model 401 is not encrypted and therefore not secure If security is a concern please contact us Model 401 Software Manual Rev B 04 10 09 1 Section 1 Introduction to TCP IP TCP IP stands for Transmission Control Protocol Internet Protocol It is a set of protocols that is independent of the physical medium used to transmit the data In this section only the Ethernet physical medium is considered since it applies to the Model 401 Some key points about TCP IP are All devices connected to the network are indentified using a unique IP address All devices connected to the network have a globally unique MAC address TCP IP internally uses MAC addresses Devices on the network cannot use MAC addresses to communicate with other devices
17. ce will address the destination directly Otherwise it will forward data to the gateway The gateway in concert with other routers determines the path the packet needs to take to get to the destination network Every Model 401 is shipped with the subnet mask set to 255 255 255 0 The user can change the Model 401 s subnet mask using the M40xVB sample application Model 401 Software Manual Rev B 04 10 09 2 Gateway IP Ethernet networks connect to other networks and the Internet via a gateway If your PC is on the same ethernet network as the Model 401 there is no need to change the default Gateway IP settings Otherwise use the M40xVC or M40xVB sample applications to set the correct gateway IP Dynamic Host Configuration Protocol DHCP DHCP server software assigns dynamic IP addresses to devices whose MAC addresses are stored in its configuration table If your PC s IP address is set to obtain an IP address automatically then your network uses dynamic IP addressing If you want to use dynamic IP addressing with a Model 401 then enter the Model 401 s MAC address in the DHCP server s configuration table and set the Model 401 s DHCP timeout to a few seconds After the Model 401 boots up it waits until the end of the DHCP timeout period for the DHCP server to assign a dynamic address The dynamic IP address assigned to the Model 401 can be found next to its MAC address in the DHCP server s configuration table If there is no reply from
18. d its last bit of data stored in its buffers Send digital output Enter the digital output value 0 255 in the text box labelled Digital Output and then click the Send button next to it The value will appear on the digital outputs as an 8 bit binary byte For example 129 10000001 Plot scans While scanning click the Show Graph button to open the graph window The selected channel is initially plotted in the graph window You can select other channels to graph by clicking on the Select Channels button at the bottom of the dialog Clicking on the graph will display the voltage at that point In this view you can change the amount of time shown in the graph by changing the sec scrn value and pressing Enter All graph settings are saved in a configuration file Model 401 Software Manual Rev B 04 10 09 17 Appendix A Errors The Model 401 can buffer up to 10 seconds of data at the highest data rate which should be sufficient to overcome brief periods of network congestion Also you can disconnect the ethernet cable for up to 5 seconds and then reconnect without any data loss However if you have several other applications running in the background with priorities equal to or greater than M40xVB it may not be able to read data from the Model 401 fast enough causing the Model 401 s internal buffer to overflow After a buffer overflow occurs the Model 401 sets the Buffer Overflow flag and continues saving da
19. e Enter the data rate 10 1000 Hz in the text box next to Set Rate and then click Send Rate The actual rate will be rounded to the closest achievable rate The Model 401 page will refresh with the actual data rate in the text box next to the Set Rate button Send digital output Enter the digital output byte 0 255 in the text box next to the Digital Output button Then click the Digital Output button The value will appear on the Model 401 output pins as an 8 bit binary number For example 129 10000001 Get a conversion and a digital input word First enter the desired channel valid options are 0 1 6 and 7 9 in the text box next to the Channel Selection button and then click the button to select that channel Then click the Get Conversion button The text box next to the button will be updated with the channel s voltage and the text box next to Digital Input Status will be updated with the current digital input state Get the firmware version and the configuration settings Click the Self Test Information button The self test information includes the Model 401 firmware version and the configuration settings Click the back hyperlink at the bottom to go back to the Model 401 page or click the browser s Back button Calibrate Click the SysCal button to perform offset and fullscale calibration Model 401 Software Manual Rev B 04 10 09 13 Section 5 Operating the Model 401 from M40xVB Installat
20. e error log to a file first close M40xVB Then open M40x cfg located in M40xVB s folder in Notepad Scroll to the bottom of the file and add the line READ LOG XX XX XX XX where XX XX XX XX is the Model 401 s IP address For multiple Model 401s enter each Model 401 s IP address separated by a comma For all the Model 401 s connected to M40xVB add the line READ LOG ALL Save the file and close Notepad Run M40xVB Open a connection to each Model 401 You will see a text file in M40xVB s folder with the Model 401 s IP address as the filename This file contains the Model 401 s error log Model 401 Software Manual Rev B 04 10 09 19 Appendix B Troubleshooting Don t know the Model 401 s IP address To restore the default IP address 10 1 1 2 connect pins 8 and 9 and 13 together in the 25 pin connector and cycle the power to the Model 401 Can t connect to the Model 401 e Make sure that the power and Ethernet cables are connected to the Model 401 device properly Cycle power to the Model 401 Ifa hub is being used make sure the cable is not a crossover cable Otherwise make sure it is If you are using a dynamic IP address check the DHCP server to see if a different IP address has been assigned to the Model 401 Check if the Model 401 is connected to another application The Model 401 supports only one connection at a time Make sure the PC and the Model 401 are on the same subnet have the same subnet address Ifyou are using a fix
21. e is the frequency that all channels to be scanned are scanned once Note that Scan Rate Data Rate Number of Channels In Scan 5 for all types of scans except single channel scan mode In single channel scan mode the scan rate is equal to the data rate You can send digital output commands at any time during any type of scan without altering the data acquisition timing A regular multi channel scan can contain from 1 to 4 channel readings With the use of an external multiplexer such as the Lawson Labs 17B a scan can contain up to 34 channel readings The different types of scans are described below Single channel scan A selected channel is sampled and transmitted continuously You can change the selected channel at any time during the scan but remember to discard the first 4 readings after a channel change For a period of time equal to 4 conversions after a channel change the channel voltage must settle Multi channel scan The number of channels up to 4 per scan must be selected before starting the scan and cannot be changed during the scan The input channel selection order is fixed If a multi channel scan is requested with 4 channels then the following channels will be scanned in order channel 0 channel 1 channel 6 channel 7 If a multi channel scan is requested with 3 channels then the following channels will be scanned in order channel 0 channel 1 channel 6 Model 401 Software Manual Rev B 04 10 09
22. ed IP address verify it using PING Some operations fail intermittently or the Model 401 quits scanning unexpectedly Check the power supply and cables Also check the error history in the Model 401 See Appendix A for more information on how to do this Model 401 Software Manual Rev B 04 10 09 20 Application note Accessing the Model 401 from a remote site or from a different network There are two cases In the first case the Model 401 is sharing a single internet connection with several devices This type of situation is typical of a home or small office setting where all devices are connected to a router and the router is connected to a single cable modem or DSL connection The router assigns local IP addresses to all the devices on the local network These IP address have no meaning outside the local network You cannot use the local IP address assigned by the router to the Model 401 to access it remotely To access the Model 401 from outside the local network you must configure the router to forward the Model 401 s HTTP port port 80 for the web interface and the Model 401 s telnet port port 23 for the DLL interface Read your router s user manual for information on how to do that Details about port forwarding should be found in sections that describe how to run servers The router has 2 IP addresses one local and the other external Get the router s external IP from the router s configuration utility The external IP address
23. ick the Connect button After connecting M40xVB performs offset and fullscale calibration and sets the internal data rate When operating multiple Model 401s simultaneously you can select the Model 401 to view communicate with by choosing it from the IP address box under Network setting Get the configuration and the firmware version Click the Self Test button The event log shows the Model 401 self test information The self test information includes the firmware version and all of the configuration settings Set the configuration Click the Config M401 Settings button From here you can edit the IP address subnet mask gateway IP address DHCP timeout and input voltage range of the instrument Once the desired settings have been entered click the Download button When prompted for confirmation click Yes After applying the new settings the Model 401 resets itself and drops the connection If you have changed the IP address enter the new IP address and reconnect to the Model 401 Calibrate Click the SysCal button to perform offset and full scale calibration The event log shows the Model 401 Software Manual Rev B 04 10 09 14 channel 6 full scale calibration channel and channel 7 offset calibration channel voltage Set the Model 401 real time clock RTC to match the PC clock Click on the Update RTC button to set the Model 401 s real time clock to the PC clock After this operation the Model 401 resets
24. ings Obtain an IP address automatically e lgie foloning IP lr 2 Subnet mask 255 255 255 0 Default gateway do 112141 Obtain DNS server address automatically Use the following DNS server addresses Preferred DNS server E E Altemate DNS server Advanced Figure 4 The Internet Protocol TCP IP Properties dialog box 7 Click OK in the Local Area Connection Properties dialog and click Close in the Local Area Connection Status dialog 8 Choose Run from the Start menu Type in ping x x x x where x x x x is the IP address of your Model 401 The first three numbers of the IP address will always be 10 1 1 The fourth will be unique Click OK to perform the ping test The ping test should indicate successful communication with the Model 401 Model 401 Software Manual Rev B 04 10 09 6 Instructions for Windows XP 1 Make sure that the Model 401 is connected to your PC s network see Hardware setup Choose Control Panel from the Start menu Double click on the Network Connections icon 3 From the new window double click on the network connection associated with the Ethernet connection to the Model 401 Usually this is the Local Area Connection item Click on the Properties button in the new window 4 The Local Area Connection Properties window is displayed Select the Internet Protocol TCP IP component Figure 5 and click the Properties butt
25. ion M40xVB along with its source code can be downloaded free of charge from www lawsonlabs com It is also a part of the Model 401 SDK To install M40xVB just run the installation program It will guide you through the setup process Operation M40xVB supports running up to 8 Model 401s simultaneously though the Model 401 API can support up to 64 and demonstrates nearly all of the Model 401 s features The large text box with a yellow background to the left of Network Setting is used as an event log The event log shows commands sent to the Model 401 and their return values You can scroll the text display up to see past operations M40xVB like all of the other sample applications uses the Model 401 API M40x dll to communicate with the Model 401 device The DLL can run in four different modes only 2 are recommended for new designs The mode in use is displayed in the lower right corner of the main window Read the Model 401 API Documentation provided at www lawsonlabs com and in the Model 401 SDK for more information about the various modes of reading data from the Model 401 using M40x dll Connect to the Model 401 There are 8 slots in the box under Network setting one slot per Model 401 Up to 8 Model 401s can be operated simultaneously Each slot is labelled with an index 0 1 2 7 Enter the IP address of the Model 401 with which you want to connect in an empty slot for example 0 10 1 1 16 Cl
26. n obtain the MAC address of the Model 401 by connecting to it with a fixed IP address as described above Then run the M40xVB sample application connect to the Model 401 andrun a self test The MAC address will be displayed in the self test results See Section 4 for more details on using M40xVB 3 Cycle the Model 401 power If the Model 401 successfully gets a leased IP address you can find it in your local server leased IP table 4 To verify your leased IP connectivity choose Run from the Start menu Type in ping x x x x where x x x x is the leased IP address Click OK to perform the ping test The ping test should indicate successful communication with the Model 401 Install M40xVB M40xVB is an application written to control the Model 401 M40xVB along with its source code can be downloaded free of charge from www lawsonlabs com It is also a part of the Model 401 SDK To install M40xVB just run the installation program It will guide you through the setup process Assigning a new IP address The M40xVB sample application can be used to assign a new IP address and other properties After successfully connecting with the Model 401 perform the following steps 1 Find an unused IP address within the subnet 2 Run M40xVB and type in the current IP address of the Model 401 device in the box under Network setting so that it reads 0 x x x x where x x x x is the IP address of the Model 401 Click on the Connect button to c
27. on 4 Local Area Connection Properties General Authentication Advanced Connect using B Realtek ATL8139 Family PCI Fast Ethernet NIC This connection uses the following items M Bi and Printer Sharing for Microsoft Networks A M E QoS Packet Scheduler Internet Protocol TCP IP v gt Description Transmission Control Protocol Internet Protocol The default wide area network protocol that provides communication across diverse interconnected networks C Show icon in notification area when connected Figure 5 The Local Area Connection Properties dialog box 5 Now the Internet Protocol TCP IP Properties dialog should be displayed Select Use the following IP address Enter 10 1 1 1 in the IP address box 255 255 255 0 in the subnet mask box and 10 1 1 1 in the default gateway box The dialog should now look like that of Figure 6 Click OK Model 401 Software Manual Rev B 04 10 09 Internet Protocol TCP IP Properties 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 IP address 110 0 7 4 9 Subnet mask 255 255 255 0 Default gateway 40 11 11 Use the following DNS server addresses Preferred DNS server Alternate DNS server Figure 6
28. onnect to the Model 401 3 Next click on the Config M401 settings button In the configuration settings window type in the new IP address and set the DHCP timeout to 0 4 Click on the Download button to send the new IP address to the Model 401 The Model 401 will reset itself and drop the connection 5 Restore your computer to its original network settings 6 Reconnect to the Model 401 using the new IP address Model 401 Software Manual Rev B 04 10 09 10 Section 3 Model 401 operating modes Polled mode The Model 401 is in polled mode after it boots up Starting a scan will put the Model 401 into scan mode Stopping a scan will put the Model 401 back into polled mode Polled mode is a device state where the Model 401 is idle until an operation is requested of it It will respond to the request and become idle again Scan mode In contrast scan mode is an active mode Prior to entering scan mode the host tells the Model 401 device which channels or subchannels to measure Once in scan mode the device scans through each of the specified channels sequentially in an infinite loop The data collected from each loop or scan is collected and sent to the network at an interval that is optimized for speed and doesn t clog up the network In discussing scans there are two important rates the data rate and the scan rate The data rate is simply the rate at which the internal A D converter performs conversions The scan rat
29. ou can change the selected channel in a single channel scan from the text box labelled Channel To send the command to the Model 401 click the Send button next to it During a single channel scan the selected channel s voltage is shown in the main window in the box labelled Volts The selected channel s minimum and maximum voltage and effective number of bits are displayed next to Reset Max Min button Click the Reset Max Min button to reset these values During multi channel and extended scans the maximum minimum and effective number of bits are shown for only one channel To calculate these values for a different channel select it in Model 401 Software Manual Rev B 04 10 09 16 the box labelled Channel and click the Send button next to it To change the subchannel in an extended scan enter the subchannel in the text box labelled Digital Output and then click the Send button next to it Error indicators If there is an error during a scan you will see Scan Error displayed in red in the text box next to the Scan Error button Click the Scan Error button for more information about the error Errors are cleared when the scan is stopped It is good practice to stop scanning and start a new scan when an is displayed See Appendix A for details about the various types of errors Stopping a scan Click Stop Scan to stop scanning After sending the command to stop scanning M40xVB waits for the Model 401 to sen
30. pe is similar to the extended scan except that channel 7 is always included in the scan to provide automatic zero drift suppression see multi channel calibration scan description Triggered start scan Each of the above scan types can optionally be started as a triggered start scan In a triggered start scan the Model 401 waits indefinitely for a trigger on one its digital inputs before starting the selected type of scan You can select any one of the eight digital input bits as the trigger and the trigger edge can be either positive or negative Triggered scans are stopped in the same way as regular scans To use triggered start scan to synchronize multiple Model 401s 1 Connect a spare digital input on all Model 401s to a common trigger 2 Send TRIGGERED START SCAN to all the Model 401s 3 Generate a trigger Model 401 Software Manual Rev B 04 10 09 12 Section 4 Operating the Model 401 from a web browser Only polled mode operations are allowed from the browser Connect to a Model 401 Enter the IP address of the Model 401 in the web browser s address box and press enter If the browser succeeds in connecting to the Model 401 then it will display the Model 401 homepage Otherwise 1t will indicate that it could not establish a connection with the server Remember that the Model 401 supports only one socket connection at a time It cannot be operated from more than one application at the same time Set the internal A D data rat
31. s the one s complement of the channel selection codes DY a ee To set up a triggered start scan of any of the above scan types 1 Check the Triggered check box 2 Click the Setup button next to it to select the digital input to be used as the trigger and to select the trigger edge up edge or down edge Start the scan Click the Start Scan button to start scanning If you wish to write scans to a log file then check the Log File check box before starting the scan Note that Log File check box is automatically unchecked after the scan stops When checked at the start of a scan a log file is created in the application folder The log filename is the Model 401 s IP address followed by the date and time that the scan was started During a scan data is written as text to the log file In multi channel and extended scans to save disk space only the last digital input value of a scan is written to the log file The precise scan start time scan stop time and scan duration can be found at the end of the log file During a scan The display interface All user interface items not allowed in scan mode are disabled In multi channel and extended scans a separate window shows the scanned voltages The number of scans received is shown in the box labelled Scan at the bottom of the main window The digital input value displayed in the box labelled Digital Input is updated after every new set of data is received Y
32. sses Preferred DNS server Alternate DNS server Figure 8 The Internet Protocol TCP IP Properties dialog box 7 Click OK in the Local Area Connection Properties dialog and click the Close button in the Local Area Connection Status dialog 8 Choose All Programs gt Accessories gt Command Prompt from the Start menu Type in ping X X X X where x x x x is the IP address of your Model 401 The first three numbers of the IP address will always be 10 1 1 The fourth will be unique Click OK to perform the ping test The ping test should indicate successful communication with the Model 401 Model 401 Software Manual Rev B 04 10 09 9 Note If you wish to move the Model 401 to a new subnet using a fixed IP address change the Model 401 s network settings from a computer already in the old subnet before moving it to the new subnet Otherwise you need to first reassign a computer in the new subnet to an IP address in the old subnet then connect to the Model 401 and change it s IP address and then return the computer s IP address to it s previous state Connecting to the Model 401 with a dynamic IP address These steps are only necessary if you plan to have the Model 401 s IP address determined dynamically by a DHCP host 1 Make sure that the Model 401 is connected to your local area network LAN 2 Register your Model 401 device on your local server You may need to enter its 12 digit MAC address You ca
33. ta to the buffer overwriting the previous data When you see the Buffer Overflow flag set expect loss of data and timing offset If the number of channels included in the scan is a factor of 400 the data will not lose registration after the buffer overflows Otherwise expect scrambled data To avoid the buffer overflow error you can try to minimize background processor activity when scanning at high data rates or increase the priority of M40xVB To increase its priority choose Thread Priority from the main menu and select the new priority Increase the thread priority until the problem goes away Ifthe Model 401 is subjected to extremely high voltage as in the case of an electro static discharge the internal A D converter may stop running When the Model 401 detects this condition it sets the Data Missing flag and then restarts the A D converter When you see the Data Missing flag expect loss of data and timing offset Ifyou continue to get unexpected errors or if the Model 401 is not communicating properly for any other reason collect the diagnostic information from M40xVB and the error history from the Model 401 and send it to us to help us determine the problem To get M40xVB s diagnostic information 1 Ifthe M40xVB is running close it Navigate to M40xVB s folder and locate the configuration file M40x cfg Open M40x cfg in notepad Scroll to the bottom of the file and add the line debug 1 Save it and close notepad
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