ShenZhen Comark Technology Co.,Ltd.
Serial Server and Gateway User Manual
Page 8
2.2
Function Menu
A detailed introduction and configuration approach will be made in this chapter.
Value
Value Range
Description
Serial Port
1~4
Select the serial number you want to set.
Baud Rate
110,300,1200,
2400,4800,9600,19200,
38400,57600,115200
default:9600
Set the baud rate for this serial port. The baud rate represents the
format of the data bits transmitted per second, a parameter that
measures the speed of the communication.
Data Bits
5~8
Default:8
Sets the data bits for this serial port. Data bits refer to the number of
bits of actual data in each byte, which is the parameter to measure the
actual data bits in the communication.
Stop Bits
1,2
Default:1
Sets the stop bit for this serial port. The stop bit is used to identify the
end of a packet data. The stop bit is not only used for packet
transmission end flags, but also provides the opportunity for
correcting synchronous clocks between computers. The more bits that
are used to stop bits, the greater the degree of tolerance for
synchronization of different clocks. However, because the stop bits
occupy the data space, excessive stop bits will result in a decrease in
data transmission speed.
Parity
even, none, odd.
Default: none
Sets the parity bit for this serial port. Parity is used to determine
whether the received data bits are wrong. For even and odd parity, the
serial port sets the parity bit, and a value ensures that the transmitted
data has an occasional or odd logical high. For 1 and 0 checksums, it
does not really check data, simple value bits logic high or low logic,
so that the receiver can know a bit state, determine whether there is
noise interference or transmit and receive data is not synchronized.
Even: Odd checksum, if the checksum is set to "odd", the number of
1 in the sending data is odd, the check digit is "0"; the parity bit is "1"
when the number of 1 in the sending data is even. None: No
checksum, when data is sent, if the check digit is set to "none", no
check digit is sent, or a checksum is sent. Odd: Parity, if the
checksum is set to "odd", the number of sending data is odd, 1, the
check digit is "1"; the parity bit is "0" when the number of 1 in the
sending data is even.
