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47

 

 

Figure 4-22. Set up the cryptography method and cryptography key string 

 

4.4 Options 

 

4.4.1 Inactivity timeout 

 

The purpose of this parameter is to maintain the TCP connection state as 

Closed

 or 

Listen

 in TCP 

host modes or to close UDP virtual connection in UDP server mode unless there is any data transfer 

between the serial device and the HelloDevice Pro Series. If there is no incoming or outgoing data 

through the serial port during the specified 

inactivity timeout

 interval, the existing TCP connection or 

virtual UDP connection will be closed automatically. 

If the value of 

inactivity timeout

 is set to 0 and the host mode is set to one of the TCP modes, the 

current TCP connection is maintained unless there’s no connection close request. Although 

inactivity 

timeout

 is disabled, the HelloDevice Pro Series will check the connection status between the 

HelloDevice Pro Series and the remote host by sending “keep alive” packets periodically. If the remote 

host does not answer the packets, it is regarded that the connection is down unintentionally. Then, the 

HelloDevice Pro Series will force to close the existing TCP connection. 

If the value of 

inactivity timeout

 is set to 0 and the host mode is set to UDP server mode, virtual UDP 

connection with the first remote host that sends UDP packet to the HelloDevice Pro Series will be 

maintained forever till device is rebooted. 

 

Note: 

At least, this value should be set larger than that of 

inter-character timeout

. To prevent the unintended 

loss of data due to the session disconnection, it is highly recommended that this value is set large 

enough so that the intended data transfer is completed. 

 

4.4.2 Inter-character timeout 

 

This parameter defines the interval that the HelloDevice Pro Series fetches the overall serial data from 

its internal buffer. If there is incoming data through the serial port, the HelloDevice Pro Series stores 

data into the internal buffer. The HelloDevice Pro Series transfers data stored in the buffer via TCP/IP, 

only if the internal buffer is full or if the inter-character time interval reaches to the time specified as 

inter-character timeout

. 

Optimal inter-character timeout would be different according to your application but at least it must be 

larger than one character interval within specified baud rate. For example, assume that the serial port 

is set to 1200 bps, 8 Data bits, 1 stop bit, and no parity. In this case, the total number of bits to send a 

character is 10 bits and the time required to transfer one character is   

Содержание HelloDevice Pro PS100

Страница 1: ...1 HelloDevice Pro Series User Guide PS100 PS200 PS400 Version 1 0 5 2003 06 24...

Страница 2: ...to Users When a system failure may cause serious consequences protecting life and property against such consequences with a backup system or safety device is essential The user agrees that protection...

Страница 3: ...the device 16 2 3 Accessing Console Port 17 2 3 1 Using Serial console 17 2 3 2 Using Remote console 19 3 IP Address Configuration 21 3 1 Static IP 21 3 1 1 Overview 21 3 1 2 IP address 22 3 1 3 Subne...

Страница 4: ...5 1 1 Configuration access 50 5 1 2 Serial Port access 50 5 2 Manual DNS configuration 51 5 3 Locating server 51 5 3 1 Overview 51 5 3 2 Locating server configuration 52 5 3 3 Locating server communic...

Страница 5: ...oubleshooting 66 C 1 Power LED status troubleshooting 66 C 2 Serial console troubleshooting 66 C 3 Remote console troubleshooting 66 C 4 IP address troubleshooting 67 C 5 DHCP troubleshooting 67 C 6 T...

Страница 6: ...oE PPP over Ethernet allowing serial devices to be accessed over DSL based broadband network or conventional LAN Local Area Network environment The HelloDevice Pro Series provides the full featured ma...

Страница 7: ...ckage Check List HelloDevice Pro Series external box 110V or 230V Power supply adapter Serial data cable A hardcopy of Quick Start Guide CD ROM including the HelloDevice IDE HelloDevice Manager and Us...

Страница 8: ...port or HelloDevice Manager System log and statistics Error log storage up to 100 messages Automatic email delivery of error log Full featured system status display Management Firmware upgrade via ser...

Страница 9: ...n A series of interactions between two communication end points that occur during the span of a single connection Typically one end point requests a connection with another specified end point and if...

Страница 10: ...tocol TCP Transmission Control Protocol DHCP Dynamic Host Configuration Protocol SMTP Simple Mail Transfer Protocol FTP File Transfer Protocol PPP Point To Point Protocol PPPoE Point To Point Protocol...

Страница 11: ...ne DC power adapter included in the package One serial data cable for configuration and for connecting the RS 232 serial device One PC with Network Interface Card hereafter NIC and or one RS232 serial...

Страница 12: ...power is supplied 2 1 2 PS200 Panel Layout The front panel of the PS200 as shown below in Figure 2 2 has one power switch one DB9 serial port connector and eight LED indicator lamps for status displa...

Страница 13: ...t of the PS200 Serial port 1 2 Status LED Tx Blink whenever there is any outgoing data stream through the specified serial port of the PS200 2 1 3 PS400 Panel Layout The front panel of the PS400 has o...

Страница 14: ...en if system is running Link Turned on to Green if connected to 10 Base T Ethernet network Ethernet Status LED Act Blink whenever there is any activities such as incoming or outgoing packets through t...

Страница 15: ...r is properly supplied the Power lamp will maintain solid red a Connecting the power to the PS100 b Connecting the power to the PS200 400 Figure 2 4 Connecting the power to the HelloDevice Pro Series...

Страница 16: ...2 3 Connecting to the device Connect the serial data cable between the HelloDevice Pro Series and the serial device If necessary supply the power to the serial device attached to the HelloDevice Pro S...

Страница 17: ...te users can make a telnet connection to the remote console port port 23 of the HelloDevice Pro Series via TCP IP network Both methods require the user to log into the HelloDevice Pro Series in order...

Страница 18: ...menu screen users can configure the required parameters guided by online comments All the parameters are stored into the non volatile memory space of the HelloDevice Pro Series and it will not be stor...

Страница 19: ...multaneously using telnet When they are established the first console session has a right to change the parameter values while others have a right to read parameter values only If the serial console i...

Страница 20: ...read only mode console Welcome to PS 400 Configuration Console 1 Serial Not Connected Console 2 Telnet Available NULL Console 3 Telnet Established 192 168 0 16 Read only Console 4 Telnet Established 1...

Страница 21: ...IP Configuration menu items IP mode IP address Subnet mask Default gateway Static IP Primary DNS Secondary DNS DHCP IP mode IP mode PPPoE PPPoE User name Password 3 1 Static IP 3 1 1 Overview In the S...

Страница 22: ...ask A subnet represents all the network hosts at one geographic location in one building or on the same local area network When there is any outgoing packet over the network the HelloDevice Pro Series...

Страница 23: ...DNS server to be able to access the host with the domain name The HelloDevice Pro Series provides the way to configure IP addresses of DNS servers i e Primary DNS server Secondary DNS server A seconda...

Страница 24: ...address Otherwise the HelloDevice Pro Series will start the procedure to request a new IP address to the DHCP server Note In DHCP mode all the network related parameters for the HelloDevice Pro Series...

Страница 25: ...it can access the remote host on the Internet over ADSL connection It is required to set up the user name and password of the PPPoE account for the HelloDevice Pro Series If the IP mode is set to PPPo...

Страница 26: ...user password pppoepwd ESC Back ENTER Refresh 2 Enter user name pppoeuser IP configuration Select menu 1 IP mode PPPoE 2 Change PPPoE username pppoeuser 3 Change PPPoE user password pppoepwd ESC Back...

Страница 27: ...lated parameters for data communication The following picture shows the initial screen of Serial Port configuration menu of the PS400 With the PS100 only port 1 settings menu will be shown while with...

Страница 28: ...ction Interval Host Mode Local Port UDP Tunneling Destination IP Port Host Mode UDP Server Local Port Host mode Modem Emulation Host Mode Type Baud rate 1200 2400 4800 9600 19200 38400 57600 115200 Da...

Страница 29: ...timer is expired the HelloDevice Pro Series tries to establish a TCP connection to a remote server through its TCP port If a TCP session is established between them the HelloDevice Pro Series will sen...

Страница 30: ...s No connection state at all If the data transfer is completed the state is changed to this state if one of the host requests disconnection request If it is in TCP server mode the state is automatical...

Страница 31: ...incoming TCP connection request the state will be changed into Sync Received then Established which means a session is opened For a while data will be transferred between the hosts This is the Data s...

Страница 32: ...data via serial port Incoming data from remote host Sync Recvd Accept Reject Figure 4 4 State Transition Diagram of TCP server mode 3 Parameters Local port This is the TCP port number through which re...

Страница 33: ...o Established which means a session has been opened For a while data will be transferred between the hosts This is Data state The session will be disconnected due to the request of one of them which i...

Страница 34: ...erred to the serial device via its serial port after the connection is established Eventually users can monitor the serial device periodically by making the remote host send the serial command to the...

Страница 35: ...nu 1 Host mode TCP Client 2 Destination IP port 192 168 1 120 6010 3 Cyclic connection Disable ESC Back ENTER Refresh 2 Enter destination IP and port ex 192 168 1 1 7001 192 168 1 200 6001 serial conf...

Страница 36: ...f TCP server mode 1 Typical State Transition Listen Sync Received Established Data Closed Listen Or Listen Sync Sent Established Data Closed Listen The initial state is Listen If there are data coming...

Страница 37: ...ial port Incoming data from remote host In coming TCP Close request Listen Incoming TCP connection request Incoming data via serial port Sync Recvd Reject Accept Closed Data Figure 4 9 State Transitio...

Страница 38: ...ecks if the IP address of the host is the same as the pre defined Destination IP address If the IP addresses are the same the HelloDevice Pro Series transfers the data through the serial port Otherwis...

Страница 39: ...t for inactivity timeout duration Before the inactivity timeout value expires the HelloDevice Pro Series transfers the UDP data to the serial port and send back the data from the serial port to the la...

Страница 40: ...m emulation mode of the HelloDevice Pro Series users can have their serial device connected to the Ethernet network easily which is cheaper than using phone line modem Table 4 3 is a summarized AT com...

Страница 41: ...hnologies Inc I3 display model number Others display OK AT Tn Set inactivity timer to n minutes T T0 inactivity timer disabled default OK CR LF AT Tsn Set inactivity timer to n seconds Ts Ts0 inactivi...

Страница 42: ...data flow of modem emulation mode serial configuration port 1 TCP IP Select menu 1 Host mode Modem emulation ESC Back ENTER Refresh Figure 4 14 Set Modem Emulation mode 4 2 UART configuration To atta...

Страница 43: ...configured for RS422 and RS485 communication To change the serial communication type set up the mode in the Type menu See Appendix B for serial port connections due to the Type setup The HelloDevice...

Страница 44: ...ys High 8 DSR behavior None ESC Back ENTER Refresh 2 Select baud rate 1 1200 2 2400 3 4800 4 9600 5 19200 6 38400 7 57600 8 115200 Figure 4 17 Set up the baud rate 4 2 3 Data bits Stop bits Parity The...

Страница 45: ...rol 1 None 2 Hardware Figure 4 19 Set up the flow control 4 2 5 DTR DSR behavior The purpose of the DTR DSR pin is to emulate modem signal control or to control TCP connection state by using serial po...

Страница 46: ...Figure 4 21 Set up the DSR output behavior 4 3 Cryptography configuration The HelloDevice Pro Series supports encrypted sessions for only TCP modes including modem emulation mode not UDP mode By sett...

Страница 47: ...ivity timeout is set to 0 and the host mode is set to UDP server mode virtual UDP connection with the first remote host that sends UDP packet to the HelloDevice Pro Series will be maintained forever t...

Страница 48: ...t be smaller than or equal to the HelloDevice Pro Series internal buffer size The buffer size of HelloDevice Pro Series is 600 bytes per a port Serial configuration port 1 option Select menu 1 Inactiv...

Страница 49: ...Allowed remote hosts for configuration Remote Host access control Allowed remote hosts for port n Enable Disable Primary DNS Manual DNS for DHCP PPPoE Secondary DNS Mode Enable Server IP Port Locatin...

Страница 50: ...0 0 Please refer to Table 5 2 for more details Default setting of allowable remote hosts for configuration is Any Table 5 2 Input examples of allowed remote hosts Allowable Hosts Input format Any host...

Страница 51: ...DNS configuration Select menu 1 Manual DNS configuration for DHCP PPPoE Disable ESC Back ENTER Refresh 1 Do you want to configure DNS manually for DHCP PPPoE y n y Advanced options Manual DNS configu...

Страница 52: ...sabled Advanced options Locating server Select menu 1 Use locating server Disable ESC Back ENTER Refresh 1 Do you want to put your information to locating server y n y Advanced options Locating server...

Страница 53: ...or 8 Note Local ports Each 2 byte data represent current local port setting of the corresponding serial port Local ports data length of PS100 should be 2 bytes while 4 bytes and 8 bytes for PS200 and...

Страница 54: ...isplay log 3 Reset incoming outgoing statistics 4 Clear log 5 Send log by Email Disable ESC Back ENTER Refresh Figure 6 1 System status menu 6 1 Display system status Users can view current system sta...

Страница 55: ...0 0 0 0 Incoming bytes 0 Outgoing bytes 0 UART 9600 N 8 1 Hardware Encryption None Inactivity timeout 100 sec Inter character timeout 1 ms End of Status Press Enter Figure 6 2 System status display PS...

Страница 56: ...n use arbitrary username with registered hostname such as arbitrary_user yahoo com or anybody sena com 5 Select email log send option 1 Enable 2 Disable 1 System status Select menu 1 Display system st...

Страница 57: ...name admin 2 Administrator password 3 Device name PS200 Device 4 Date 2002 02 10 5 Time 04 45 38 ESC Back ENTER Refresh 1 Enter current password Enter New Username root Administrator username changed...

Страница 58: ...menu 1 Administrator username root 2 Administrator password 3 Device name PS200 Device 4 Date 2038 05 10 5 Time 04 48 03 ESC Back ENTER Refresh 4 Enter Current Date yyyy mm dd 2002 3 14 User Administr...

Страница 59: ...ter reload of factory settings select submenu 2 Reload factory default settings except IP settings 8 2 Firmware upgrade Firmware of the HelloDevice Pro Series can be upgraded both by serial console or...

Страница 60: ...e HelloDevice Pro Series will reboot automatically 6 If the firmware upgrade fails the HelloDevice Pro Series will display messages as follows and it will preserve the firmware of current version 3 Ar...

Страница 61: ...ence num 0 Receive time 1 ms Sequence num 1 Receive time 1 ms Sequence num 2 Receive time 1 ms Sequence num 3 Figure 8 5 Ping test screen 8 4 Socket reset You can reset the network socket for the corr...

Страница 62: ...on Color 1 Tx White with orange 2 Tx Orange 3 Rx White with green 4 NC Blue 5 NC White with blue 6 Rx Green 7 NC White with brown 8 NC Brown A 2 Serial Ports Pin Outs The pin assignment of the HelloDe...

Страница 63: ...ethernet cable Rx 1 Rx 2 Tx 3 Tx 6 HelloDevice Hub Rx 1 Rx 2 Tx 3 Tx 6 Remote Host Rx 1 Rx 2 Tx 3 Tx 6 Rx 1 Rx 2 Tx 3 Tx 6 Figure A 4 Ethernet connection using straight through Ethernet cable A 4 Ser...

Страница 64: ...ata 9 120 Data Data Data Data DeviceN 1 120 Data Data RS485 Figure A 6 RS485 wiring diagram DeviceN 1 DeviceN N max31 Tx 1 Tx 9 120 120 Rx Rx Rx 3 Rx 4 120 120 Tx Tx RS422 Device1 Rx Rx Tx Tx Rx Rx Tx...

Страница 65: ...esses or by programs executed by privileged users Table B 1 shows famous port numbers among the well known port numbers For more details please visit IANA website http www iana org assignments port nu...

Страница 66: ...nfiguration of terminal emulation program 9600 bps 8 Data bits No parity 1 stop bit Hardware flow control Serial console is halted for few seconds periodically IP mode is DHCP or PPPoE but IP is not a...

Страница 67: ...re not on the same subnet Run HelloDeviceManager on the PC that is on the same subnet with the HelloDevice Pro Series C 5 DHCP troubleshooting Problem Cause Action Cannot lease IP address DHCP server...

Страница 68: ...Serial console is used Serial port 2 of the PS400 is used commonly for both data port and serial console port While serial console is used data transfer through serial port 2 is disabled Close serial...

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