User Manual
Embedded EtherNet/IP Module
GS11-EI
11
can begin to communicate;
2. Using UART setting IP address mode: GS11-EI will wait the user to send the setting IP address message, and
the next step is the same with the first initialization.
3.4 Initialize Communication
Communication mode: user board (host) is the communication initiator, and GS11-EI responses.
Configuration of baud rate: GS11-EI reads these pins BAUD0, BAUD1 and BAUD2 that select the UART
baud rate when it power on or reset.
1. Initialize request message--- (user board->module), When you choose to use the serial port (UART) to set the
IP address and other information, you can sent this initialization request message.
Byte
EtherNet/IP to user-defind protocol
0
message length is 17 which includes all following bytes except the check sum byte and the length
byte , high-byte first
1
2
The default value is 0; when user set GS11-EI via UART that use DHCP to assign IP address, the value
of this byte is 1 *
3
IP Configuration Mode, 0: Static Configuration; 1: DHCP ;
4
IP Address, high-byte first
5
6
7
8
Subnet Mask, high-byte first
9
10
11
12
Default Gateway Address, high-byte first
13
14
15
16
Reserved, always 0
17
Reserved, always 0
18
Reserved, always 0
19
Check sum, byte 0+byte 1+…+byte 18
Remarks:
when user set GS11-EI module via UART that use DHCP to assign IP address, user board sends above
message
（
the value of byte 2 should be 1
）
