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7.2.2 Baudrate Setting Switch
The 4-bit DIP switch on the development board is used to set the serial (UART) baud rate and default IP
address locking:
1
2
3
4
ON
1
0
Low
Middle High Default IP
bit
bit
bit
address locking
Corresponding relationship of baud rate is as follows:
Index
High bit
Middle bit
Low bit
Corresponding baud rate (bps)
0
0
0
0
Reserve
1
0
0
1
Reserve
2
0
1
0
9600
3
0
1
1
19200
4
1
0
0
38400
5
1
0
1
57600
6
1
1
0
115200
7
1
1
1
230400
The baud rate showing in the picture is 115200bps.
The fourth bit of DIP is “Default IP address locking” bit. When the bit is “ON”, the module starts the
embedded Web Server with default IP configurations, which can be open with IE browser on the PC to restore
default configurations or to update the firmware. However it can’t exchange data between the host and Modbus
TCP. The default IP configurations are as follows:
IP address: 192.168.0.11
Subnet mask: 255.255.255.0
