UC-7122/7124 User`s Manual, v1
Contents
1. CE Class A Safety UL cUL Others RoHS CRoHS WEEE Warranty 5 years NOTE 1 The USB Client function is reserved for future enhancement 2 CompactFlash is designed for Flash memory cards or Microdrives UC 7122 7124 Software The UC 7122 7124 embedded computer is a ready to run RISC based headless computer with a robust and network centric design It uses the Microsoft Windows CE 5 0 operating system Developers of embedded communication applications will find that the open programming environment makes the UC 7122 7124 well suited for both new system development and legacy system migration Applications Development Environment C Libraries and Run times Compared to the C libraries and run times used on a desktop PC running Windows the C libraries and run times on a UC 7122 7124 WinCE are a subset of the WIN32 APIs The system supports a full ANSI C run time standard input output library standard input output ASCII library and standard ASCII string functions In addition C compiler exception handling and Run Time Type Information RTTI equivalent to desktop C compilers are supported Component Services COM and DCOM The Common Object Model COM is an operating system independent object oriented system for creating binary software components that can interact with other COM based components in the same process space in other processes or on remote machines Microsoft Foundation Classes MFC MEFC i2. Changes are made periodically to the information in this manual to correct such errors and these changes are incorporated into new editions of the publication Chapter 1 Chapter 2 Chapter 3 Appendix A Appendix B Table of Contents Introduction wcstiavatatab eaten teaver teed dendewariioasiid aaaea Aana EEK AEAN ner 1 1 OVSINI E Weren eia en a E dhasonessiarvahelaasteesdiasied a R E E eta 1 2 Model Descriptions and Package Checklist ccceceecceseeesecseeereeeeeeeeeeeeeeeeeneeneensees 1 2 OSTA PAA EA A KAn NE PE AE E des desis whos dee T E E 1 2 Hatdwar Specifications zeieren i io n i E E E cn elon eos 1 3 UGSTI22 A SOF WATS e E E A A E R A a S 1 4 Applications Development Environment cccceccesseesseecesseeeseeeeceeceeensecnseceeeneeenes 1 4 Networking and Communications Capabilities ssseesseeseeseeeesseeeesseserseeseesessrerssesees 1 4 Supported Servers and Daemons s sssessssssesersesseesssstsetsreststssteressteteseserstsseesessesesseeee 1 5 Obtaining the Firmware Build Version csccescceceseceseceseeeseceecseeeseeeseeneeseeeeeeeneeeeenseenaees 1 5 Memory and File Systems sema 3 ice nla ah aon NR as OR Ae AS 1 5 RAM File S ystem isc 2s A E veces So ccdh i E TE A EE 1 5 Flash File Systemi rere e ceed setae ee et esos 1 6 External File System cceccesceseesseesseeseeesceeeceecesceesecaecnaecsaecaeeeseeeaeeeeeeeeeeeeeeeeneenaees 1 6 Cautions when Using File Systems 0
3. enter 51 Go to the display position for Port and then click Modify Step 6 Browse to HKEY LOCAL MACHINE Services HTTPD Accept TCP 80 Step 7 Change the value of SockAddr to 02 00 00 51 00 00 00 00 00 00 00 00 00 00 00 00 For Modified Value enter 02 00 00 51 00 00 00 00 00 00 00 00 00 00 00 00 Go to the display position for SockAddr and click Modify UC 7122 7124 User s Manual Frequently Asked Questions Step 8 Log in to the embedded computer using a Telnet client and then restart the web server gt services stop HTPO gt services start HTPO Step 9 Try connecting to the server with the new URL as follows http 192 168 3 127 81 FAQ 2 Answer 2 FAQ 3 Answer 3 FAQ 4 Answer 4 FAQ5 Answer 5 FAQ 6 Answer 6 FAQ7 Answer 7 FAQ 8 What type of file system is supported by the embedded computers MOXA embedded computers support TFAT Transaction safe File Allocation Table file systems on the on board flash memory TFAT protects the file system from write corruption when the power shuts off unexpectedly However the TFAT file system may not be recognized by PCs Therefore MOXA embedded computers support the FAT File Allocation Table file system for external storage such as for USB and SD drives Where can I store files permanently on the embedded computer There is a sub directory named NORFlash under the root directory Use
4. will remain intact Can I reboot the computer remotely B 2 UC 7122 7124 User s Manual Frequently Asked Questions Answer 8 FAQ 9 Answer 9 FAQ 10 Answer 10 FAQ 11 Answer 11 Yes Log on to the computer from a remote client and then use the reboot command to reboot the system Which USB specifications do the embedded computers support The embedded computers support USB 2 0 and 1 1 mass storage devices If you cannot find the USBDisk directory unplug the device and then plug it in again I plugged a USB storage device into the computer but I can not find the associated directory under the root directory If you cannot find the associated directory StorageDisk or StorageDisk2 unplug the device and then plug it back in again How can we configure certain applications to start automatically when the embedded computer boots up To set up your application to start automatically on bootup log into the web based management system and complete the following steps Step 1 Navigate to Processes and find the Automatic Launching section MOXA AB Windows CEso System Networking Serial Port fiesys exe File Manager wes exe Service Ke CMD DE Processes KeyPad Easy Test NKE Oevice exe sereces ore ka conmars bert EXE Kn ODDE on OE LEM Automate Launches 1 e_neci exe UC 7122 7124 User s Manual Frequently Asked Que
5. 2Z Please key in Local IP XXX XXX XXX XXX 192 168 27 234 H Please key in Server IP XXX XXX XXX XXX 192 168 27 42 StateOPEN m BS Ready A 2 UC 7122 7124 User s Manual Firmware Upgrade Procedure 8 After providing both IP addresses you may check the settings by typing 3 on the command line E3 PComm Terminal Emulator COM2 115200 None 8 1 ANSI DER Profile Edit Port Manager Window Help a GAA a 2 e5 55 0 20 EY COM2 115200 None 8 1 ANSI Module Name UC 7124 CE 00 90 E8 10 58 0a8 00 90 E8 10 58 0B Set to Default Show Configure 192 168 27 234 COAS1BEA 192 168 27 42 COAS1BZA Moxa Technologies Co Ltd Version 1 3 0 0 Make date Aug 2 2007 17 08 09 Module Name UC 71Z24 CE Serial No 90 MACO 00 90 E8 10 58 0A 00 90 E8 10 58 0B Set to Default Show Configure 9 Click Esc to return to the previous menu Upgrading the Firmware 1 From the main menu of the boot loader utility select 1 for Firmware Upgrade to start the firmware upgrade process Ey PComm Terminal Emulator COM2 115200 None 8 1 ANSI BAR Profile Edit Port Manager Window Help a lA alle 328 E COM2 115200 None 8 1 ANSI DER a Moxa Technologies Co Ltd Version 1 3 0 0 Make date Aug Z 2007 17 08 09 Module Name UC 7124 CE Serial No MACO 00 90 E8 10 58 0A 00 90 E8 10 58 0B Firmware Update TFTP Config Reset to Factory Default Format Flash Disk a
6. DER Profile Edit Port Manager Window Help BA alae 328 E COM2 115200 None 8 1 ANSI Moxa Technologies Co Ltd Version 1 3 0 0 Make date Aug 2 2007 17 08 09 Module Name UC 7124 CE Serial No MACO 00 90 E8 10 58 08 00 90 E8 10 58 0B Firmware Update TFTP Config Reset to Factory Default Format Flash Disk and Reset OS Moxa Technologies Co Ltd Version 1 3 0 0 Make date Aug Z 2007 17 08 09 Module Name UC 7124 CE Serial No MACO 00 90 E8 10 58 0A MACL 00 90 E8 10 58 0B Set to Default Show Configure fe dee ler loeo Ready 7 Select 2 and then press Enter You will be asked to provide a local IP and server IP The local IP is the IP address of your UC 7122 7124 and the server IP is the IP address of your TFTP server Since the TFTP server is located on your PC the server IP is the same as your PC s IP address EA PComm Terminal Emulator COM2 115200 None 8 1 ANSI Profile Edit Port Manager Window Help 8 GIR alale 8128 E COM2 115200 None 8 1 ANSI Make date Aug 2 2007 17 08 09 Module Name UC 7124 CE Serial No MACO 00 90 E8 10 58 0A 00 90 88 10 58 0B Firmware Update TFTP Config Reset to Factory Default Format Flash Disk and Reset OS Moxa Technologies Co Ltd Version 1 3 0 0 Make date Aug Z 2007 17 08 09 Module Name UC 7124 CE Serial No 00 90 E8 10 58 04 00 90 E8 10 58 0B Set to Default Show Configure Command gt gt
7. Reset to Factory Default 4 Format Flash Disk and Reset OS Zommand gt gt Step 6 Type 4 for Format Flash Disk and Reset OS and then press Enter 2 2 UC 7122 7124 User s Manual Getting Started Step 7 After a few seconds you will see the bootloader menu again Unplug the power line and then plug it back again It takes about 3 minutes to reset the operating system ga PComm Terminal Emulator COM2 115200 None 8 1 AHSI Profile Edit PortManager Window Help Moxa Technologies Co Ltd Version 1 3 0 0 Make date Aug 2 2007 17 08 09 Module Name UC 7124 CE Serial No 00 90 E8 10 58 0A 00 90 88 10 58 0B l Firmware Update 2 TFTP Config 3 Reset to Factory Default 4 Format Flash Disk and Reset 0S Moxa Technologies Co Ltd Version 1 3 0 0 Make date Aug 2 2007 17 08 09 Module Name UC 7124 CE Serial No 00 90 E8 10 58 0A8 00 90 E8 10 58 0B il Firmware Update i2 TFTP Config 3 Reset to Factory Default 4 Format Flash Disk and Reset 0S State OPEN E m Operating Your UC 7122 7124 Computer through the Serial Console The serial console port located next to the two LAN ports gives users a convenient way of connecting the development workstation to the console utility of the target computer This method is particularly useful when using the computer for the first time After you have wired a serial cable go back to the development workstation and start a terminal progr
8. by TFTP and upgrade the firmware using boot loader utilities The following steps show how to upgrade the firmware Setting up the TFTP server l 2 Connect LAN1 of the UC 7122 7124 to your PC using a cross over Ethernet cable Download a free TFTP server package from the following site ftp papa indstate edu winsock 1 Windows95 Daemons TFTPD Refer the Help file in the package for instructions on how to set up the TFTP server Put the latest firmware image e g UC7124_V1 0 07061112 bin in the same directory that the TFTP resides Configuring the TFTP client on the UC 7122 7124 Power off the UC 7122 7124 Connect the UC 7122 7124 to your PC with a console port cable Start a terminal program with the settings Baudrate 115200 no hardware flow control 8 N 1 character set VT100 Hold down the DEL key on your PC Power on the UC 712X embedded computer You will be guided to the boot loader utility menu Moxa Technologies Co Ltd Version 1 3 0 0 Make date Aug 2 2007 17 08 09 Module Name UC 7124 CE Serial No 90 MACO 00 90 E8 10 58 0A MAC 00 90 E8 10 58 0B tl Firmware Update i2 TFTP Config 3 Reset to Factory Default 4 Format Flash Disk and Reset OS Zommand gt gt UC 7122 7124 User s Manual Firmware Upgrade Procedure 6 Type 2 TFTP Config and press Enter This will guide you to the TFTP configuration menu PComm Terminal Emulator COM2 115200 None 8 1 ANSI
9. this directory to store persistent files Can I delete certain system files under Windows CE You should not be able to delete any system files Even if you do succeed in deleting the files the files will return after the next system boot Can I add other users in addition to admin Yes Use the command useradd to add users and use the command userdel to delete users Is there a way to set up user access control for each function service FTP Telnet etc independently Yes Log on to the computer as admin and use the command useradd to create user groups and assign users to them Three default groups have been created administrators telnetd ftpd If I accidentally remove some system files or corrupt the OS is there any way to recover the system or reset the embedded computer to factory defaults If the embedded computer is not working properly you may reset it to factory default settings With the computer switched on insert a paper clip or pin into the small Reset to Default hole on the front of the embedded computer Press and hold the pin for 5 seconds A buzzer will sound as the factory default settings are loaded After the factory default settings have been loaded the embedded computer will reboot automatically After rebooting the embedded computer will have rolled back to the original state as defined by the original registry database However persistent files under NORFlash
10. 0 eeceeceesceeseeeseceeceeeeseeseeeeeeeeenseeneeenseesaeeeenaees 1 6 Using a RAM File System instead of a Flash File System 0 0 0 ceeeceecsseeeeeeeeeeeeeeeens 1 6 Hive baseds REGIS yenna asec O ET ewe alee see 1 6 Inserting an SD Card into the Computer cccecceescsscceseceeceseceeecaeeaecaeecaeecneeeaeeeneenseeerenerens 1 7 Connecting a USB Mass Storage Device to the Computer cceccsseeseeceeeseeeeceeeeeeeenseerens 1 7 RS 232 422 485 Serial Policano snesesscieosevestessciveseobesdesneicisee shesssiebaciucteobeateintics 1 8 MOTRIN State e520 225 oa seat cease saphena hate a ai daaa eddie 2 1 Starting Your UC 7122 7124 Computer ccecccesccescceccesecesecececseecseeeneeeeeseeceeeeneeneeneenaeenaes 2 2 Resetting Your UC 7122 7124 Computer cccecccesccssecsceeseenseceecseeeseeeeeeeeeseeeeeeeeeeeneeneenaees 2 2 Operating Your UC 7122 7124 Computer through the Serial Console 0 cceeeeeeeeeeees 2 3 Changing the Network Settings ccccccceessessceesceeeceecesecesecaecaeecseeeaeeeeeeseeseeeeeseneeneeneesaees 2 3 Operating Your UC 7122 7124 Computer through a Telnet Client eee eeeeseeeeeteeetees 2 4 User Group Managements srren rinse ir ie ee dhe ston meas E teed co EE E aese bb E AE 2 5 System Time M nagement seinninn niin i E e R i E ei 2 6 Starting and Stopping Services esssesesessseeseserserseeressteresststtsesttsessteressestesestesesseesesseseessesees 2 6 Troubleshooting Network Conn
11. Manager Services LAN2 AX887961 DHCP Enable Processes Network Address 192 168 2717 Update Network Mask 255 255 255 0 Network Gateway 192 168 27 254 Domain Name Server 192 168 1 99 Serial Port Configuration The target computer has several high performance serial ports each of which supports RS 232 RS 422 and RS 485 By default each port is set for RS 232 data transmission Each port can be assigned a different serial interface The updated settings take effect after the system has rebooted and remain in force until another update is made MOXA Wi indows CE50 Default Operation Mode System a Cece P1 COM3 P2 COM4 P3 coms P4 COM Networking RS232 v v R5232 RS232 v RS232 v Serial Port File Manager Services Processes 3 3 UC 7122 7124 User s Manual Web based Management System Binary Text File Management PC users enjoy the convenience of using Windows friendly windows based file manager to browse delete and organize files and directories MOXA s web based management system provides the same kind of convenience for managing files on the target computer Click File Manager to view the directory tree of your target computer The file manager can be used to perform the following operations To browse a child directory click the name of the directory e To delete a file click the X in front of the file icon e To create a ch
12. Step 1 Click the Services item on the main menu bar The running services are displayed Step 2 Click the relevant check box to toggle a start stop operation for the desired service 3 4 UC 7122 7124 User s Manual Web based Management System Monitoring and Controlling Processes Threads At runtime the target computer manages up to 32 applications that you can monitor and control with the management system To view current processes click the Processes item on the main menu bar You can kill a process by clicking the kill button next to the process name System Processes INK EXE 1 2 Serial Port filesys exe 2 j4 dovice ove 3 Aq File Manager lowes exe 4 4 jservices ono 5 19 Services Kill CMD EXE 6 1 Kill co_noci oxe 7 1 Processes Kil lorn exe 8 4 Automatic Launching 1 ce_neciexe Remove Launching Processes Automatically To set your application to start on boot up do the following Step 1 Click the Processes item on the main menu bar In the lower part of the page there is an area marked Automatic Launching Step 2 Enter the full path of the application in the first text field and enter its arguments if there are any in a separate text field Step 3 Click Add 3 5 A Firmware Upgrade Procedure The latest firmware for MOXA s embedded computers can be downloaded from the download center on MOXA s website For the UC 7122 7124 we provide a solution to upload the firmware file
13. TTPD Includes ASP ISAPI Secure Socket Layer support SSL 2 SSL 3 Transport Layer Security TLS SSL 3 1 public key based protocols and Web Administration ISAPI Extensions ABD E rtp 192 168 77 234W ebAimin 5 A Home I Instructions Logging SSL Configuration Restart Web Server Web Server Configuration The Web Server Administration WebAdmin page for the Windows CE Web enables you 10 remotely administer your Web server using your Web browser Use WebAdmin to manage the accessibility security and file sharin s of your Web server including the following tasks hich files are shared and how they are accessed o which fil 3 the Web server will use Caution Inconectly configuring the Web server increases the likelincod a hacker could gain control of your Windows CE device and the likelihood that the system w ao le The Wet x Configuration is intended for advanced users only For more information refer to the help topics included with the Web server or consult a System Administrator Choose a Web site A Web server can contain multiple Web sites You can configure a variety of opt Teach Web site created on your Web server including virtual uthentication and directory sing For more information see configuring Web sites If you do not have multiple Web sites all requests will on the Default Web site Select an existing Web site or create a new one Default Web site Create a new Web site Mindon CE Version 6 0 Bu
14. UC 7122 7124 User s Manual First Edition July 2007 www moxa com product Moxa Systems Co Ltd Tel 886 2 2910 1230 Fax 886 2 2910 1231 Web www moxa com MOXA Technical Support Worldwide support moxa com The Americas support usa moxa com UC 7122 7124 User s Manual The software described in this manual is furnished under a license agreement and may be used only in accordance with the terms of that agreement Copyright Notice Copyright 2007 Moxa Systems Co Ltd All rights reserved Reproduction without permission is prohibited Trademarks MOXA is a registered trademark of the Moxa Group All other trademarks or registered marks in this manual belong to their respective manufacturers Disclaimer Information in this document is subject to change without notice and does not represent a commitment on the part of MOXA MOXA provides this document as is without warranty of any kind either expressed or implied including but not limited to its particular purpose MOXA reserves the right to make improvements and or changes to this manual or to the products and or the programs described in this manual at any time Information provided in this manual is intended to be accurate and reliable However MOXA assumes no responsibility for its use or for any infringements on the rights of third parties that may result from its use This product might include unintentional technical or typographical errors
15. User s Manual Introduction Overview The UC 7122 7124 embedded computers come with 2 or 4 RS 232 422 485 serial ports and dual 10 100 Mbps Ethernet LAN ports to provide users with a versatile communication platform making these RISC based embedded computers ideal for your embedded applications The UC 7122 7124 embedded computers use the Cirrus Logic EP9302 ARM9 200 MHz RISC CPU Unlike the X86 CPU which uses a CISC design the ARM9 s RISC design architecture and modern semiconductor technology provide the UC 7122 7124 with a powerful computing engine and communication functions but without generating too much heat Moreover the built in 16 MB NOR Flash ROM and 32 MB SDRAM give you enough storage capacity to run applications on the UC 7122 7124 The additional SD socket provides the flexibility for storage expansion and the dual LAN ports built into the ARM9 make the UC 7122 7124 ideal communication platforms for simple data acquisition and protocol conversion applications In addition the RS 232 422 485 serial ports allow you to connect a variety of serial devices Taken together these features ensure that the UC 7122 7124 embedded computers are convenient and powerful central control units for industrial applications such as data acquisition remote device control and monitoring and protocol conversion Model Descriptions and Package Checklist UC 7124 CE Mini RISC based Ready to Run Embedded Computer with Dual LANs 4 Serial Port
16. administrator To manage these computers operations such as networking server configuration file management and process thread monitoring control are critical The following topics are covered in this chapter Logging onto the Web based Management System System Information Networking Server Configuration Serial Port ConfigurationIntroduction Monitoring and Controlling Services Monitoring and Controlling Processes Threads Launching Processes Automatically OOCUOCCOD UC 7122 7124 User s Manual Web based Management System Logging onto the Web based Management System The web based management system installed in the UC 7122 7124 computer incorporates often used features into CGI pages and categorizes them on a menu bar Before attempting to connect to the management system make sure the network connection from your PC to the target computer active and you are able to use the PC s Internet browser The following steps describe how to log on to the web based system 1 Type the IP address of the target computer in the browser s address box When the main page appears click on Web Based Management 2 Enter your user ID and password in the corresponding fields both are case sensitive and then press enter to request access to the management system The system checks your data with the users previously defined in the computer and then determines the validity of your logon The default User ID and Password are as fol
17. am e g HyperTerminal by using the settings shown below for the serial console port Baudrate 115200 bps Parity None Data bits 8 Stop bits 1 Flow Control ANSI After a successful connection type the login name and password as requested to log on to the computer The default values are both admin Login admin Password admin Changing the Network Settings The UC 7122 7124 computer comes with two or four network interfaces The default IP addresses and netmasks of the network interfaces are shown in the following table Default IP Address LANI 192 168 3 127 255 255 255 0 LAN2 192 168 4 127 255 255 255 0 2 3 UC 7122 7124 User s Manual Getting Started For most applications you will need to change the network settings to math the local network to which the development workstation is connected If you do not change the IP addresses you may not be able to make a network connection to the UC 7122 7124 directly The netconfig command is a utility that is used to complete the task Before changing the IP addresses type netconfig h to list the help for this command gt netconfig h netconfig V1 0 Usage netconfig n lt AdapterName Alias gt EnableDHCP i lt IP address gt m lt netmask gt For example if your development workstation has a LAN port at 192 168 1 1 and the IP address of the Domain Name Server DNS is 192 168 2 6 execute the following command g
18. ectivity ssesssesssssreessseseessesetseseesessteresseseseseesesseenesseseesse 2 6 Simple Network Management Protocol SNMP cc cccssesseesseeeeeeeeeeseeeeceseeeeeeaeeeseeeeeaeeenes 2 7 Web based Management System s ssssensssensrennnnunnnunnnnunnnnnnnnnnnnnnnnnnnnnn nnna 3 1 Logging onto the Web based Management System ccsccssessecsseeseeeseeeeeeeeeeeeeeeeeeteenseensees 3 2 System Information aeinn ee n a ee Bch ols oat eye ee eee 3 2 Networking Server Configuration cccccsccscecsseessesseeeeceeeceeeeseensecesecaecsaeeaeeaeceaecaeeeeeneeenes 3 3 Serial Port Configuration 4 202 a8 cee ATR Ben EA A ERS 3 3 Monitoring and Controlling Services cccccecscessseseceeeceecesecesecseecaeeeseeeseeeeeeseeeseseeeeeeeeereneens 3 4 Monitoring and Controlling Processes Threads ccscceseessecssecseeeeeeseeeeeeeeceeeeneeeeenseeerens 3 5 Launching Processes Automatically cceccesssesseessceseceeceseceseceecaeeeseseseeeeeseeeseeenseeeeeneenaees 3 5 Firmware Upgrade Procedure cccccssseesseeeeeeeeeeeeeeeeeeeeeeeeeeensenneeeeeeneenens A 1 Frequently Asked Questions eceeeeceeeeeeeeeeeeeeeeeeeneeeeeeeeneeeeeeeeeeeeeeeeeeeees B 1 1 Introduction The UC 7122 7124 are pocket size embedded computers with 2 or 4 serial ports dual 10 100 Mbps Ethernet an SD socket and a USB 2 0 host port The UC 7122 7124 are ideal for front end device monitoring data acquisition and protocol conve
19. er chapter The following topics are covered in this chapter Starting Your UC 7122 7124 Computer Resetting Your UC 7122 7124 Computer Operating Your UC 7122 7124 Computer through the Serial Console Changing the Network Settings Operating Your UC 7122 7124 Computer through a Telnet Client User Group Management System Time Management Starting and Stopping Services Troubleshooting Network Connectivity Simple Network Management Protocol SNMP OOOOCUOODCOCOD UC 7122 7124 User s Manual Getting Started Starting Your UC 7122 7124 Computer Connect the SG wire to the shielded contact located in the upper left corner of the UC 7122 7124 computer and then power it up by connecting it to the power adaptor It takes about 30 to 60 seconds for the system to boot up Once the system is ready the Ready LED will light up The light will stay lit until you shut down the computer Resetting Your UC 7122 7124 Computer When the target computer stops responding or an application locks up or the target computer fails to work normally you may need to restart or reset the target computer s operating system We provide four ways to restart or reset the operating system Warm Start When the computer is powered on insert a pin into the Reset hole next to the serial console and hold for 1 to 2 seconds The computer will reboot automatically Cold Start Unplug the power line and then plug it back in again The computer wil
20. es traps from SNMP agent applications The UC 7122 7124 computer installs an SNMP agent to serve as an SNMP device You should install the SNMP manager on the workstation computer for example a Linux system that monitors the network After installing the nodes you need to configure the SNMP manager and agent To check SNMP agent capabilities on a target UC 7122 7124 computer e g network IP at 192 168 3 127 log on to the workstation computer on which the SNMP manager resides and type 2 7 UC 7122 7124 User s Manual Getting Started gt snmpwalk v 2c c public 192 168 3 127 system SNMPv2 MIB SNMPv2 MIB SNMPv2 MIB SNMPv2 MIB SNMPv2 MIB eee sysDescr 0 Microsoft Windows CE Version 5 0 Build 1400 sysObjectID 0 SNMPv2 SMI enterprises 311 1 1 3 3 sysUpTime 0 1282929 sysContact 0 Your System Contact Here sysName 0 WindowsCE You will see a series of messages from the SNMP agent on the UC 7122 7124 computer You may then proceed to monitor and manage the computer 3 Web based Management System Note You must use Internet Explorer 5 5 or above to access the web based management system The UC 7122 7124 ready to run embedded computers are network centric platforms designed to be used as front end computers for data acquisition and industrial control Due to the distributed characteristics of the devices that these computers control they often reside in harsh environments away from the system
21. hen creates a file frequently it is quite possible that the program writes data to the same flash area In the long run FAT would be blocked when scanning the area and would cause the operating system to hang An SD card has its own life cycle Since most SD cards are made from a NAND Flash their hardware controllers implement BBM This feature allows FAT to skip bad blocks if they exist Furthermore the memory space of an SD card is much larger than that of the NOR Flash Using this space cautiously will ensure that its life cycle is not exceeded When creating a file for storing log data we suggest creating a large empty file e g 30 MB and then writing data evenly to that space When the space is used up the program rewinds the write operations As a result the number of write operations to each block is reduced Using a RAM File System instead of a Flash File System Even though data in the RAM file system will be deleted after shutting off the power using the RAM file system has several advantages over using the Flash file system including faster read write access and not needing to deal with the life cycle issue For important applications that relay data back to the host directly you should write the necessary log data to the RAM file system After the host accesses the data the application erase the data freeing up the memory space for further use The embedded computer has limited resources and designers should decide if st
22. hfm UC 71Z24CE_vl O hfm PHYAutoNegotiation CS8952Z needs 2 second delay EthernetMAC PhyId 31 PhyType 7 Speed 100 Mbs Duplex Full CS8950 The media mode is autosense 0x3100 0x786D 0x0 0x8201 0x1lEl Ox4SE1 0xl sing default protocol TFTP Ready to receive UC7124CE_v1l 0 hfm rite File to Flash Now Ste tse Rr loeo Ready B Frequently Asked Questions FAQ 1 Can I change the connection port for the web server HTTPD to something other than 80 Answer 1 Yes you can change the web server port For example suppose that your embedded computer s IP address is 192 168 3 127 and you wish to assign 81 as the HTTPD port number The following steps explain how to do this Step 1 Start IE Internet Explorer navigate to the IP address shown below and then log in as administrator default admin admin http 192 168 3 127 sysadmin Client IE4 Step 2 Select Registry Editor from the top frame Step 3 Browse to HKEY LOCAL MACHINE Comm HTTPD A BR winds ce web based Administration HKEY_LOCAL_MACHINE Comm HTTPD New Value Name Port I New Value Type REG_SZ REG_DWORD REG_BINARY New Value Step 4 Adda DWORD value named Port the default value must be zero For New Value Name enter Port For New Value Type select REG DWORD Click the New Value button Step 5 Change Port to 51 the HEX value of 81 In the Modified Value field
23. ild directory click Create Directory and then follow the on screen instructions e To refresh the current directory click Current Directory at the top of the page MOXA ani Windows CE50 File Manager System Goto Root Current Directory Operation Name SizeModified Date Networking Gr Create Directory 3 Upload Fite OnorFlash 1998 01 01 AM 04 00 Serial Port my Documents 2007 04 11 PM 05 54 ae Ciprogram Files 2007 0411 PM 05 54 EAR tenn Citemp 2007 0411 PM 05 54 eee windows 2007 04 11 PM 05 54 Processes In addition the management system offers a mechanism for uploading files The mechanism gives you an easy way to transfer files from your workstation to the target computer For example after you build an application on the development workstation you can use this mechanism to upload the application to the current directory of the target computer Step 1 Click Upload File A browser window pops up Step 2 From the pop up browser window click Browse to bring up a local file manager Step 3 Browse to and select the file that you want to upload and click Open Step 4 Navigate back to the browser window and click OK The system starts to upload the file Step 5 After the file is uploaded completely refresh the page Monitoring and Controlling Services Some services such as ftp and telnet daemons run in the background to provide services for user requests To monitor and control these services do the following
24. ill start up or stop a service with its associated name by using the services command For example Start the FTP service with the following command gt services start FTP0 Stop the FTP service with the following command gt services stop FTPO Troubleshooting Network Connectivity The ipconfig tool prints the TCP IP related configuration data of a host including the IP addresses gateway and DNS servers gt ipconfig all Windows IP configuration Ethernet adapter Local Area Connection IP Address 192 168 30 127 Subnet Mask 255 255 255 0 Adapter Name CS89501 Description CS89501 Adapter Index 2 Address 00 90 e8 00 dl 23 DHCP Enabled NO Ethernet adapter Local Area Connection IP Address 192 168 27 17 Subnet Mask 255 255 255 0 Default Gateway 192 168 27 254 Adapter Name AX887961 Description AX887961 Adapter Index 3 Address 00 90 e8 00 dl 24 DHCP Enabled YES DHCP Server 192 168 1 95 Primary WINS 192 168 1 98 Secondary WINS 192 168 1 99 Lease obtained on Wednesday April 11 2007 23 6 46 2 6 UC 7122 7124 User s Manual Getting Started Lease expires on Sunday April 15 2007 23 10 46 AutoConfig Enabled YES Host name UC7124 Domain Name moxa com DNS Servers 192 168 1 99 192 168 1 98 NODETYPE 8 Routing Enabled NO Proxy Enabled NO To troubleshoot network connectivity or name resolution use the ping command This command verifies IP level connectivity to a
25. l reboot automatically Resetting to Factory Defaults If the computer is not working properly and you want to reset it back to factory default settings press and hold the Reset button for at least 5 seconds The buzzer will sound while the factory default settings are being loaded After the factory defaults have been loaded the computer will reboot automatically Resetting the system In rare circumstances the TFAT file system may be damaged by executing improper applications or due to an unstable power supply In this case the computer may fail to boot up if the TFAT table crashes In order to get the system back up and running you will need to format the flash disk and reset the operating system Note that all user files and configurations will be erased The following steps show how to format the flash disk through boot loader utilities Step 1 Power off the UC 7122 7124 embedded computer Step 2 Connect the UC 7122 7124 to your PC using the console port cable Step 3 Start a terminal program with the settings Baudrate 115200 no hardware flow control 8 N 1 character set VT 100 Step 4 Hold in the DEL key on your PC Step 5 Power on the UC 7122 7124 You will be guided to boot loader utility menu Moxa Technologies Co Ltd Version 1 3 0 0 Make date Aug Z 2007 17 08 09 Module Name UC 7124 CE Serial No 30 MACO 00 90 E8 10 58 02 MACl 00 90 E8 10 58 0B 1 Firmware Update 2 TFTP Config 3
26. lla Ver on 1900 Syevam on 1420 a Obtaining the Firmware Build Version There are two ways to obtain the firmware version of UC 7122 7124 embedded computers This information is particularly important for identifying the features supported by the computer e Examine the welcome message after you log on to the computer Log on to the web based management system described in a later chapter to view the system information Memory and File Systems The 32 MB of SDRAM is divided into two main parts The main memory which houses the operating system and user applications has a capacity of about 20 MB The kernel image occupies the remainder of the memory space RAM File System The internal file system in the UC 7122 7124 computer controls access to flash and also provides file storage in the object store which is in the RAM The root directory is a RAM file system of size 4 MB Child directories such as Windows Temp My Documents Network and Program Files are under the root directory They can be used for storing temporary files for your applications However do not place persistent files or applications in these directories because they will be deleted when the system is shut down Instead place them in the NORFlash directory 1 5 UC 7122 7124 User s Manual Introduction Flash File System The Flash file system provides persistent storage for applications and related data even
27. lows User ID admin Password admin System Information After you log on successfully the main page displays the system information of the target computer including the firmware version of the computer the CPU system time and system resources including main memory and file system usage RAM and Flash MOXA weer All Windows CE50 System Model Name UC 7124 Networking Computer Name UC7124 2 Firmware Version V1 0 Serial Port Net CF Version None File Manager CPU Architecture Cirrus 93024 CPU System Time 2007 04 12 01 55 52 Taipei Standard Time Services Free Total Memory 3548 7432 K Bytes O MMN Processes Free Total FS RAM 269 384 K Bytes a Free Total FS Flash 7453 7779 K Bytes nn rr SS eee Warning Please preserves at least 100k bytes for Registry l Registry Editor Reboot System 3 2 UC 7122 7124 User s Manual Web based Management System Networking Server Configuration The target computer has two network interfaces To view or change the settings click the Networking item on the menu bar After the page loads enter the relevant details in the corresponding text fields and then click Update to activate the changes MOXA e 7 Windows CE50 Pale LAN1 C589501 stem u DHCP Enable o s 168 3 Updat REEVEOEEITT Network Address 192 168 3 l 27 pdate Network Mask 255 255 255 0 Serial Port Network Gateway Domain Name Server File
28. n header output 115200 n 8 1 Button Reset button x 1 supports Reset to Factory Default Other RTC buzzer Watchdog Timer OS Built in WinCE 5 0 Network Communication LAN 10 100 Mbps RJ45 x 2 auto sensing Protection 1 5 KV built in magnetic isolation protection Serial Communication Serial Ports UC 7122 RS 232 422 485 male DB9 x 2 UC 7124 RS 232 422 485 male DB9 x 4 Protection 15 KV built in ESD protection for all signals Data bits 5 6 7 8 Stop bit s 1 1 5 2 Parity None Even Odd Space Mark Flow Control RTS CTS XON XOFF RS 485 ADDC Speed 50 bps to 921 6Kbps supports ANY BAUDRATE LEDs System Ready SD activity LAN 10M Link 100M Link RJ45 connector Serial TxD RxD Power Requirements Power Input 12 to 48 V Power Consumption Without USB device plugged in UC 7122 340 mA 12 VDC UC 7124 360 mA 12 VDC With USB device plugged in UC 7122 667 mA 12 VDC UC 7124 700 mA 12 VDC Mechanical Dimensions UC 7122 7124 77 x 111 x 26 mm without wall mount ears WxDxH Construction Material UC 7122 7124 aluminum 1 mm 1 3 UC 7122 7124 User s Manual Introduction Mounting DIN rail wall Environment Operating 10 to 60 C 14 to 140 F 5 to 95 RH Temperature 40 to 75 C 40 to 167 F is optional for T models Storage Temperature 20 to 80 C 4 to 176 F 5 to 95 RH 40 to 85 C 40 to 185 F is optional for T models Regulatory Approvals EMC FCC
29. nd Reset 0S Moxa Technologies Co Ltd Version 1 3 0 0 Make date Aug 2 2007 17 08 09 Module Name UC 7124 CE Serial No MACO 00 90 E8 10 58 0A 00 90 E8 10 58 0B State OPEN A 3 UC 7122 7124 User s Manual Firmware Upgrade Procedure 2 Type 1 to load firmware image from your PC When prompted to provide the file name of the firmware file input the firmware file name E3 PComm Terminal Emulator COM2 115200 None 8 1 ANSI BAR Profile Edit Port Manager Window Help 8 Al eleal 328 E COM2 115200 None 8 1 ANSI DEAR AA Moxa Technologies Co Ltd Version 1 3 0 0 Make date Aug 2 2007 17 08 09 Module Name UC 7124 CE Serial No MACO 00 90 E8 10 58 0A MAC 00 90 E8 10 58 0B il Firmware Update i2 TFTP Config 3 Reset to Factory Default Format Flash Disk and Reset 0S Moxa Technologies Co Ltd Version 1 3 0 0 Make date Aug Z 2007 17 08 09 Module Name UC 7124 CE Serial No MACO 00 90 E8 10 58 0A Command gt gt 1 File Name NK hfm UC7124CE_v1l 0 hfn StateOPEN m Ready 3 Press Enter and then wait a few seconds for the firmware image to download Restart the computer after the file has been downloaded PComm Terminal Emulator COM2 115200 None 8 1 ANSI aA Profile Edit Port Manager Window Help a aA slale 32 E COM2 115200 None 8 1 ANSI DER a 00 90 E8 10 58 0A 00 90 E8 10 58 0B Command gt gt 1 File Name NK
30. nother TCP IP computer by sending Internet Control Message Protocol ICMP Echo Request messages The corresponding return Echo Reply messages are displayed along with round trip times For more information type ping without parameters gt ping www moxa com Pinging Host www moxa com 192 168 1 16 Reply from 192 168 1 16 Echo size 32 time lt lms TTL 126 Reply from 192 168 1 16 Echo size 32 time lt lms TTL 126 Reply from 192 168 1 16 Echo size 32 time lt lms TTL 126 The route utility allows you to view or modify network routing tables Type this command without parameters to view a list of functions gt route To view current routing items in the tables type gt route PRINT To add a routing item on network interface 1 type gt route ADD 192 168 0 0 MASK 255 255 0 0 192 168 15 254 IF 1 To delete a routing item type gt route DELETE 192 168 0 0 Simple Network Management Protocol SNMP SNMP is the standard Internet protocol for network management and belongs to the TCP IP protocol suite SNMP was developed to monitor and manage networks It uses a distributed architecture that consists of agents and managers e The SNMP agent is an SNMP application that monitors network traffic and responds to queries from SNMP manager applications The agent also notifies the manager when significant events occur by sending a trap e An SNMP manager is an SNMP application that generates queries to SNMP agent applications and receiv
31. oring data in a file system is really necessary If it is necessary be sure to choose the most appropriate file system Hive based Registry The registry for the UC 7122 7124 is a hive based registry instead of a RAM based registry The hive based registry stores registry data inside files or hives which can be stored in any file system This eliminates the need for performing backup and restoring power 1 6 UC 7122 7124 User s Manual Introduction Each file or hive contains a collection of registry data The hive based registry is split into two hives the system hive which contains all system data and the user hive which contains all data pertinent to one particular user The UC 7122 7124 embedded computer is a multi user system and accordingly contains several user hives A user s hive will be mounted on logon and dismounted on logoff Inserting an SD Card into the Computer The UC 7122 7124 is equipped with an SD slot When an empty SD card is inserted into the slot the computer automatically formats it to the FAT system This process takes a few minutes to complete After an SD card is inserted the embedded computer will create a directory named StorageDisk under the root directory The StorageDisk directory controls access to the SD storage space The embedded computer will create a directory called StorageDisk2 if another USB storage device is plugged in at a later time Connecting a USB Mass Storage De
32. rsion Wide temperature models are also available to provide reliable performance in harsh operating environments The RISC based UC 7122 7124 embedded computers come with the Windows CE operating system pre installed Microsoft Windows CE 5 0 is an open scalable 32 bit operating system that allows users to build a wide range of innovative small footprint devices A typical Windows CE based device is designed for a specific use and often runs disconnected from other computers or distributed as a front end to a centralized host Examples include enterprise tools such as industrial controllers communications hubs point of sale terminals and display devices such as HMI advertisement appliances and interactive panels The following topics are covered in this chapter O Overview gt Model Descriptions and Package Checklist gt UC 7122 7124 Features gt Hardware Specifications Q UC 7122 7124 Software gt Applications Development Environment gt Networking and Communications Capabilities gt Supported Servers and Daemons QO Obtaining the Firmware Build Version O Memory and File Systems gt RAM File System gt Flash File System gt External File System gt Cautions when Using File Systems gt Using a RAM File System instead of a Flash File System Hive based Registry Inserting an SD Card into the Computer Connecting a USB Mass Storage Device to the Computer RS 232 422 485 Serial Ports OoOoOUo UC 7122 7124
33. s SD USB WinCE 5 0 UC 7122 CE Mini RISC based Ready to Run Embedded Computer with Dual LANs 2 Serial Ports SD USB WinCE 5 0 Each model is shipped with the following items 1 UC 7122 7124 embedded computer Quick Installation Guide Document amp Software CD 100 cm RJ45 to RJ45 Ethernet cross over cable CBL 4PINDB9F 100 100 cm console port cable 4 pin header to female DB9 Universal Power Adaptor e Product Warranty Statement Optional Accessories e 35 mm DIN rail mounting kit DK 35A NOTE Please notify your sales representative if any of the above items are missing or damaged UC 7122 7124 Features The UC 7122 7124 embedded computers have the following features e Cirrus Logic EP9302 ARM9 32 bit 200 MHz processor e 32 MB on board RAM 16 MB built in flash memory RS 232 422 485 serial ports with software selectable interface e Baudrates between 50 and 921 6Kbps supports ANY BAUDRATE UC 7122 7124 User s Manual Introduction Dual 10 100 M Ethernet for backup networking SD card slot for storage expansion LED indicators for status serial transmission Ready to run WinCE platform Easy DIN rail or wall mounting Fanless design for increased ruggedness e 40 to 75 C wide temperature models available Hardware Specifications System CPU Cirrus Logic EP9302 ARM9 RISC CPU 200 MHz RAM 32 MB Flash 16 MB Storage Expansion SD slot USB USB2 0 host x 1 Console port RS 232 x 1 TxD RxD GND 4 pi
34. s a comprehensive class library and complete object oriented application framework designed to help build applications COM components and controls Winsock 2 2 Provides enhanced capabilities over Winsock 1 1 including installable service providers for additional third party protocols and Media sense Networking and Communications Capabilities Simple Network Management Protocol SNMP Monitors remote connections to the network Simple Network Time Protocol SNTP Client Provides support for synchronizing the device s system time with an SNTP server and supports Daylight Savings Time Serial Communications In addition to the 16550 UART driver bound to a debug port and the console port a special driver for 8 or 16 additional MOXA serial ports is also included Network Utilities IpConfig Ping Route Utilities for troubleshooting various network problems TCP IP Includes IP Address Resolution Protocol ARP Internet Control Message Protocol ICMP Internet Group Membership Protocol IGMP Transmission Control Protocol TCP 1 4 UC 7122 7124 User s Manual Introduction User Datagram Protocol UDP name resolution and registration and DHCP Supported Servers and Daemons e Telnet Server A sample server that allows remote administration through a standard Telnet client e FTP Server A sample server used for transferring files to and from remote computer systems over a network using TCP IP Web Server H
35. stions Step 2 Enter the full path of the application in the first text field If there any arguments are required enter them in the second text field Click Add MO Windows CEso System Networking Serial Port File Manager Services Processes KeyPad LCM Easy Test MOXA aig System Networking Serial Port File Manager Services Processes KeyPad LCM Easy Test UC 7122 7124 User s Manual Frequently Asked Questions FAQ 12 How do I monitor processes on the embedded computer Answer 12 From the Telnet serial console enter the command ps to monitor current processes The web console here is a Processes page You can monitor processes or you can kill a pending application running on the system MOXA i A System Networking t 2 Serial Port 2 4 3 4 File Menager gwes exe 4 4 seraces exe 5 1 SOrVices ka CMD EE 6 i Ka conmarnthert EXE 7 Processes Ka CMD BE s KeyPad LOM MALODE LENING asy Test ors 1 e_neck exe B 5
36. t netconfig n LAN1 i 192 168 1 5 m 255 255 255 0 g 192 168 1 254 d 192 168 2 6 Use the command netconfig to view the updated settings gt netconfig Ethernet Adapter CS89501 IP Address 192 168 3 127 SubNet Mask 255 255 255 0 Gateway Ethernet Adapter AX887961 IP Address 192 168 4 127 SubNet Mask 255 255 255 0 Gateway Operating Your UC 7122 7124 Computer through a Telnet Client We suggest changing the network settings of the computer see the above section so that at least one of the two network ports is on the same LAN as your development workstation Use a cross over Ethernet cable to connect directly from your development workstation to the UC 7122 7124 computer or use a straight through Ethernet cable to connect the computer to a LAN hub or switch Next use the Telnet client in your development workstation to connect to the Telnet console utility of the UC 7122 7124 computer After connecting successfully type the login name and password as requested to log on to the computer Login admin Password admin After logging on through the console port or through a Telnet client a list of busybox commands are available to operate the computer Use HELP to display all of the commands and type HELP command name to display extended help for the given command Some of these commands such as DATE and TIME are very useful for managing the computer s system time Other commands s
37. to prevent a user from accessing the system Note that the user admin cannot be deleted gt userdel xxxx user xxxx has been deleted You can also just remove a user from a user group with the command userdel g lt groupName gt lt newUserID gt For example gt userdel g yyyy xxxx user xxxx has been removed from group yyyy Password Change Use the command passwd lt userID gt to change your login password Type gt passwd xxxx Current password New password Retype new password Password has been changed User List Use the command userlist to list all users gt userlist List all users 2 5 UC 7122 7124 User s Manual Getting Started System Time Management Setting the System Time Manually Use the date and time commands to query the current system date time or to set a new system date time gt date The current date is Tuesday November 22 2005 Enter the new date mm dd yyl lyy 12 23 05 gt date T Wednesday November 23 2005 gt time The current time is 5 27 17 PM Enter the new time hh mm ss 16 02 00 gt time T 4 02 04 PM Starting and Stopping Services After booting up the UC 7122 7124 computer runs several services continuously to serve requests from users or other programs Some important services are telnet TELO console CONO world wide web HTTP HTPO and file transfer FTP FTPO If you rarely use these services you can st
38. uch as DIR and MKDIR are good utilities for file management For example to inspect the file structure of the root directory type DIR gt dir b Network NORFlash My Documents Program Files Temp Windows 2 4 UC 7122 7124 User s Manual Getting Started User Group Management User Grouping You often need to define a user group that will be associated with a particular system service and manage this service to be accessible only by the users authorized to register with this group Three user groups namely ftpd telnetd and httpd have been created in the default factory kernel for your convenience Use command useradd g lt groupName gt to create a user group gt useradd g yyyy group yyyy has been added To remove a group use the command userdel g lt groupName gt gt userdel g yyyy group yyyy has been removed User Addition Use the command useradd lt newUserID gt to add a user for accessing the system By default the user s password is the same as the user name gt useradd xxxx user xxxx has been added In addition you can allow this user to access a particular service by typing g followed by the user group name of the service For example useradd g lt groupName gt lt newUserID gt For example gt useradd g telnetd xxxx user XxXxx is existent group telnetd is existent user xxxx has been added to group yyyy User Deletion Use the command userde lt userID gt l
39. uter through a 3 pin serial cable Neither of the two COM ports are programmable and for this reason they cannot be used by your applications The UC 7122 s 2 serial ports are designated as COM3 and COM4 from left to right The UC 7124 s 4 serial ports are designated as COM3 to COM6 from left to right The serial ports are designed to provide reliable high speed operation up to 921600 bps Each port supports three operation modes RS 232 RS 422 and RS 485 to handle a diversity of applications For detailed information on configuring the serial ports please refer to the Serial Port Configuration section in Chapter 3 Web based Management 2 Getting Started In this chapter we explain how to use a PC to operate a UC 7122 7124 embedded computer We will refer to the PC that connects to the UC 7122 7124 as a development workstation and the UC 7122 7124 embedded computer will be called a target computer development workstation PC used to operate the embedded computer target computer UC 7122 7124 embedded computer In addition we describe the steps you should follow to carry out certain operations such as setting the system time and troubleshooting network connectivity Some of these operations can be carried out using system commands after gaining access to the target computer and others can be carried out using a web based management system The we based management system is described in a lat
40. vice to the Computer The USB mass storage device is considered to be highly portable between your PC and a computer that does not support the TFAT system We suggest that you format your devices with the FAT format When the first USB storage device is plugged into the slot on the back of the computer a directory named USBDisk under the root directory is created in the internal file system as a link to the storage device The embedded computer will create a directory called StorageDisk2 if another SD storage device is plugged in at a later time The following table lists USB mass storage devices that have been tested successfully for compatibility Vendor Device Name Size CRUZER mini 128 MB Intel Flash memory 128 MB Abocom 128 MB POI 256 MB Transcend JetFlash 512 MB Transcend JetFlash 1 GB A ATTENTION Some USB storage devices may not be detected by the system We suggest that you use one of the devices listed in the above table since these USB mass storage devices have been tested successfully for compatibility 1 7 UC 7122 7124 User s Manual Introduction RS 232 422 485 Serial Ports The UC 7122 7124 computer comes with two embedded serial ports referred to as COM1 and COM2 COMI is hidden inside the embedded computer s outer casing and is only used for debugging purposes when developing the firmware COM2 is used as a console port and allows users to connect to the comp
41. when the main power supply is lost The system integrates the read only files that are stored on the Flash with the read write files from both applications and users A child directory named NORFlash is created under the root the size of the directory is 8 MB External File System The additional file systems from USB and SD storage devices are placed in the root of the internal file system If you intend to use these devices to port data between your PC and the UC 7122 7124 computer you should format them using the FAT file system on your PC Cautions when Using File Systems We recommend storing your programs only in the on board NOR Flash Please store the log data generated by your programs in an external storage device such as an SD card or Network File System Note that a Network File System will generally provide more storage space than the SD card In addition it is easier to replace a full or damaged Compact Flash than an on board NOR Flash A NOR Flash has a life cycle of 100 000 write operations in block 128 KB level and does not support BBM Bad Block Management For this reason the FAT file system would not know when a flash block has reached its cycle and would try to scan the block repeatedly FAT sequentially searches for free memory space for write operations After deleting many files the memory space could become fragmented making it more difficult to search for free space If your program updates deletes and t
Download Pdf Manuals
Related Search