Moxa Technologies MiiNePort E2-H User Manual page 61

MiiNePort E2/E3
1 to 65535: If the module does not receive the next byte of data within the time specified, it will pack the data
in its buffer into the same data frame for network transmission.
The Force transmit field is typically used in conjunction with the delimiter fields to specify how data in the
module's buffer is packed for network transmission. When delimiters are used, the module accumulates data in
its buffer as it waits to receive a delimiter. If there is a break in communication, data will be held in the buffer
as the module continues to wait for a delimiter. The Force transmit field allows you to specify the maximum
amount of time that the module will wait for data. With Force transmit enabled, the module will automatically
pack the data in the buffer for network transmission if no data is received for the specified time.
When set to 0, Force transmit is disabled, which means there is no time limit for how long the module will wait
to receive data. When set between 1 and 65535, the module will pack data if serial data is not received in the
specified time.
The optimal force transmit time depends on your application, but it should be larger than one character interval
within the specified baudrate to have any effect. 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 needed to send one character is 10
bits, and the time required to transfer one character is
(10 bits / 1200 bits/s) × 1000 ms/s = 8.3 ms.
Since it requires about 9 ms to send one character, the Force transmit should be 10 ms or more to have any
effect. At 9 ms or less, the module will simply pack every character as it is received, which would be the same
as if a delimiter character or Force transmit time were not specified.
ATTENTION
If you want to send a series of characters in the same packet, the serial device attached to the MiiNePort
should send that series of characters during a time interval less than the Force transmit timeout for the
MiiNePort, and the total length of data must be less than or equal to the MiiNePort's internal buffer size. The
serial communication buffer size for the MiiNePort is 1 KB per port.
TCP Server Mode
TCP alive check time
Setting
0 to 99 min
0 min: TCP connection is not closed due to an idle TCP connection.
Factory Default
7 min
7-12
Web Console Configuration
Necessity
Optional