Senatek LS100 manual Set serial 9600 7 e 2 h s n

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supported by the LS100. Hardware flow control method controls data communication flow by sending signals back and forth between two connected devices.

The purpose of the DTR/DSR pin is to emulate modem signal control or to control TCP connection state by using serial port signal. The DTR is a write-only output signal, whereas the DSR is a read-only input signal in the LS100 side.

The DTR option can be set to one of three types: always high, always low or show TCP connection. If the DTR behavior is set to show TCP connection, the state of the DTR pin will be maintained high if the TCP connection is established.

The DSR option can be set to one of three types: none, allow TCP connection only by high or open/close TCP connection. Allow TCP connection only by HIGH is valid only if host mode is TCP server or equivalent. If this option is set, the incoming TCP connection request will be accepted only when the DSR signal is high state. Open/close TCP connection is valid only if the host mode is a TCP client or equivalent. If the DSR behavior is set to open/close TCP connection, the high state of the DSR pin will make the LS100 send a connection request to the specified destination host, whereas the low state close a connection.

Inter-character timeout defines the interval that the LS100 fetches the overall serial data from its internal buffer. If there is incoming data through the serial port, the LS100 stores data into the internal buffer. The LS100 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

10 (bits) / 1200 (bits/s) * 1000 (ms/s) = 8.3 ms.

Therefore, you have to set inter-character timeout to be larger than 8.3 ms. The inter-character timeout is specified in milliseconds and must be larger than 10 ms.

If users want to send the series of characters into a packet, serial device attached to the LS100 should send characters without time delay larger than inter-character timeout between characters and the total length of data must be smaller than or equal to the LS100 internal buffer size. The serial communication buffer size of LS100 is 1400 bytes.

Figure 5-1 shows serial port configuration example of 9600 bps, 7 data bits, even parity, 2 stop bits, hardware flow control, DTR shows TCP connection, No DSR behavior and inter-character time out of

10ms:

>set serial 9600 7 e 2 h s n 10

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Contents HelloDevice Lite Series LS100 User Guide User Guide for the HelloDevice LS100 Contents Page Introduction OverviewPackage Check List Product Specification Serial InterfaceTerminologies and Acronyms MAC addressAcronym Table Getting Started Panel LayoutPanel layout of the LS100 Connecting to the Network Connecting the HardwareConnecting the Power Connecting to the Device Connecting a network cable to the LS100Accessing Console Port Using Serial ConsoleData/Console switch of the LS100 Using Remote Console Telnet program set up exampleCommand Usage LS100 command set summary1 ‘set’ Command IP configuration example screen2 ‘get’ Command 11 Help screen example3 ‘help’ Command 14 Getting all parameters screen4 ‘factorydefault’ Command 15 Help screen7 ‘reboot’ Command 5 ‘save’ Command6 ‘exit’ Command IP Address Configuration IP configuration parametersOverview Static IP ConfigurationStatic IP Setting IP configuration parameters for Static IP mode DhcpPPPoE Dhcp ConfigurationPPPoE Configuration LS100 TCP/IP session modes Host Mode ConfigurationHost mode configuration parameters Listen TCP Server Mode Operations Sync-SentSync-Recvd Listen TCP Server Mode Configuration TCP server mode settingTCP Client Mode Operations Operations Serial data transferTCP Client Mode Configuration State Transition Diagram of TCP client modeTCP Server/Client Mode Operations TCP client mode settingTCP Server/Client Mode Configuration State Transition Diagram of TCP server/client modeTCP server/client mode setting Serial Port Configuration Serial Port Configuration parametersSet serial 9600 7 e 2 h s n Serial port configuration System Administration Administration parameters configurationSerial Port Pin Outs Appendix a ConnectionsEthernet Pin outs HelloDevice Ethernet Wiring DiagramSerial Wiring Diagram Appendix B Well-known Port Numbers Table B-1 Well-known port numbersSerial Console Troubleshooting Appendix C TroubleshootingPower/LED Status Troubleshooting Remote Console TroubleshootingTCP Server Mode Operation Troubleshooting IP Address TroubleshootingDhcp Troubleshooting Serial Communication Troubleshooting

LS100 specifications

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