Atop Technology SW550X User manual - Manual (Page 43)

Atop Industrial Wireless Serial Device Server Series
SW550X
User Manual V 1.1
37
specified time interval has reached and no more serial data comes in. The default
value is calculated automatically based on the baud rate. If the automatic value
results in chopped data, the timeout could be increased manually by switching to
“Manual setting” and specifying a larger value.
Attention
Interval Timeout Manual Calculation
The optimal “Interval timeout” depends on the application, but it must
be at least larger than one character interval within the specified baud
rate. For example, assuming 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 a character is 10 bits, and the time required to
transfer one character is (10 (bits)/1200 (bits/s))*1000 (ms/s) = 8.3
ms.
Therefore, you should set the “Interval timeout” to be larger than 8.3
ms. Rounding 8.3 ms to the next integer would get you 9 ms.
 Max Byte: SW550X will transmit the serial data in its buffer when the specified
length has reached. Enable this option if you would like SW550X to queue the data
until it reaches a specific length. This option is disabled by default.
 Character: SW550X will transmit the serial data in its buffer when it sees the
incoming data include the specified character (in HEX format). This field allows one
or two characters. If character delimiter is set to 0x0d, SW550X will push out its
serial buffer when it sees 0x0d (carriage return) in the serial data. This option is
disabled by default.
 Network to Serial Packet Delimiter: Same as the delimiters above, but controls data
flow in the opposite direction. It will store data from the network interface in the queue
and send it to over to the serial interface until one of the delimiter conditions is met.
 Character Send Interval: This option specifies the time gap between each character.
When set to two second, SW550X would split the data in the queue and only transmit
one character (byte) every two second. This option is disabled by default.
 Response Interval Timeout: This option only affects the Request & Response Mode
and has no effect on the Transparent Mode. When TCP data is received (request) and
passed to Serial side, the device will wait for the set time before transferring another TCP