SENA HD1300 - Manual (Page 31)

Starter Kit and User Manual for the HelloDevice 1300
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6. Connecting User Devices
In order to communicate with your device connected to the HelloDevice 1300 from the your PC, you should
implement Internet socket program of your PC. It should send ASCII string to the HelloDevice by TCP/IP
protocol. When the HelloDevice receives the string, it will pass the string to its serial port. Finally, the string is
transmitted to the serial port of user device, if it is hooked up with the HelloDevice, or vice versa.
Figure 6.1 shows a basic concept of remote data communication by using the HelloDevice. You should
implement an Internet socket program or Java applet based on the HelloDevice communication protocol. You
should also hook up user device according to the specification of the HelloDevice serial port.
Ethernet
192.168.1.15
192.168.1.23 192.168.1.21
: TCP 6001 port
User PC User PC
ASCII String ASCII String
User Device
HelloDevice
Communication
RS232/485
Figure 6.1 Remote serial communication of the HelloDevice
6.1 Connecting Hardware
Only one of RS232 or RS485 communication mode is supported in the HelloDevice serial port. You can
configure the communication mode, by sliding the RS232/485 mode conversion switch on the main board. Serial
cable connection is changed due to the communication mode. Figure 6.2 shows the communication mode
configuration by using SW2, RS232/485 conversion switch.