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Protocol
The EKI device provides TCP/IP and UDP two protocols. In settings, you can
choose either TCP mode or UDP mode according to your application.
Data Listen Port
The TCP/UDP port number represents the source port number, and the number
is used to identify the channel for remote initiating connections. Range: 1024-
65533. If an unknown caller wants to connect to the system and asks for some
services, they need to define the TCP/UDP port to carry a long-term conversa-
tion. Each node on a TCP/IP network has an IP address, and each IP address
can allow connections on one or more TCP port. The well known TCP ports are
those that have been defined; for example, port 23 is used for Telnet connec-
tions. There are also custom sockets that users and developers define for their
specific needs. The default TCP/UDP port of the EKI device is 5300. The exam-
ple initial 5300 is System Port, and 5301 is Data Port. But users can adjust them
by one's preference or application.
Each port has its own data listen port to accept connected request of other net-
work device. So, the data listen port can't be set the same value. You can trans-
mit/receive data to/from device via the data listen port.
Command Listen Port
Each port has its own command listen port to accept connected request of other
network device. So, the command listen port can't be set the same value. You
can use 'AT command' to change the port setting via the command listen port.
The Command Listen Port should be different from the Data Listen port.
Data Idle Timeout
The default is 60 seconds. If you want to keep connection continually, you can
disable the Data Idle Timeout. Data idle Time is the time period in which the
device waits for data. If the EKI device does not receive data over an estab-
lished idle time, the EKI device will disconnect temporarily. When the data
comes to the EKI device, it will reconnect automatically. Users do not need to
reconnect.
Enable Time Sharing
The EKI device provides Multi-access function through Ethernet connection
path. Allow the maximum of 5 connections to open one serial port simultane-
ously. In the mode, all connection has to use the same serial setting. If one
serial setting of these connections is different from others, the data communica-
tion may operate incorrectly.
There are two operating mode of Multi-access function. One is Normal mode;
another is Round-Robin mode.
Normal Mode
Disabling "Response Timeout" parameter, the EKI device will operate in "normal
mode". When multiple hosts open the serial port simultaneously, the EKI device
only offers control ability for the first connected host and provides data commu-
nication function for others. Each serial port supports up to five simultaneous
connections, so multiple hosts can transmit/receive data to/from the same serial
port simultaneously. Every host can transmit data to the same serial port, and
the EKI device will also transmit data to every hosts. When the multiple hosts
transmit data to the same serial port at the same time, the received data from
Ethernet and the outputs of serial port are mixed. When the EKI device receives
data from serial port, the data will also be transmitted to the connected hosts
simultaneously.
EKI-1361/EKI-1362 User Manual
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