37 EKI-1351/1352 User Manual
Chapter 3 Configuration
Host Idle Timeout (10~255 seconds): The "Host Idle Timeout" setting monitors
the connection between the host and the device. If the "Host Idle Timeout" set-
ting time is reached, the device server will release the resources allocated to the
port mapping. This prevents a stalled host from affecting the connectived
device.
EKI-1351/1352 provides Multi-access function through 802.11b or 802.11g WLAN.
Allow the maximum of five connections to open one serial port simultaneously. In the
mode, all connections have to use the same serial setting. If one serial setting of
these connections is different from others, the data communication may operate
incorrectly.
There are two kinds of Multi-access function. One is Normal mode; another is Round-
Robin mode.
Normal mode: Disabling “Response Timeout” parameter, EKI-1351/1352 will
operate in “normal mode”. When multiple hosts open the serial port
simultaneously, the EKI-1351/1352 only offers control ability to the first
connected host but also provides data communication 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 EKI-1351/1352 will also transmit
data to every host. But, while multiple hosts transmit data to the same serial port
at almost same time (there still have the order of arrival), the received data from
serial device (this should be required by the first order of arrival) will be
transmitted to the connected hosts simultaneously. This causes hosts receive
incorrect data except the host who has the first order of arrival.
Note The default value of "Host Idle Timeout" is 60 seconds.
Note This operating mode is suitable for the one major host send the command
and others hosts just listen the data from serial port. If two of connected hosts
send the command at the same time, it is possible that EKI serial device
server will not handle the command and will response the incorrect data.