SENA HD132x Series User Manual
Page 31
HD132x Series User Manual
31
(1)[IP Mode]
Static IP mode
Static IP mode is when your IP address of the HelloDevice is a fixed IP address. After setting the IP
address, it will be stored even when the power is turned off. When operating in this mode, the IP
address set in 4.3.2 will be in memory unless the IP address is initialized with [IP Clear] command.
Dynamic IP mode
Dynamic IP mode is when your IP address of the HelloDevice is a floating IP address. Under such
setting, when the power is restarted, the IP address will be reset through DHCP. DHCP is a method of
granting use for an IP address from the DHCP server temporarily. The HelloDevice is programmed to
automatically request for an IP reset after 24 hours. Therefore, in the case of dynamic IP mode, the
IP address, which was already set, will be maintained for 24 hours.
Note:
In the case of Dynamic IP mode, the IP address cannot be initialized with the [IP Clear] command.
(2) Device Comm
Server mode
This is when the HelloDevice operates as TCP server. The HelloDevice stands by until the TCP client
tries to connect to the HelloDevice through the designated port of the HelloDevice. For an initial TCP
connection request, the HelloDevice allows connection and transmits the data to the serial device
through RS232 port of the HelloDevice. Since the HelloDevice supports only one TCP server socket,
the next TCP connection request will be denied if it is currently connected. Other TCP connection
requests
will be allowed after the current TCP connection is terminated.
Client Mode
This is when the HelloDevice operates as TCP client. When the user device connected to RS232 port
of the HelloDevice sends data to the HelloDevice, the HelloDevice tries to connect to a designated
remote server through the designated TCP port of the remote server, and send received data to the
remote server. However, if the HelloDevice failed to connect to the remote server after 5 attempts at
an interval of 1 second, the received data will be deleted.