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3.3 Real-time monitoring IP function
If the GS11-MT is set to DHCP, then the module will monitor its IP when it is running. If IP changed, it will
pull up /DataExch pin to logic 1.Then two cases: 1.Using configuration software setting IP address mode: The
module will obtain an IP again. User needs to read / DataExch pin state. If it re-becomes logic 0, indicating that
the module has obtained IP, and the module can begin to communicate; 2.Using UART setting IP address mode:
GS11-MT will wait the user to send the setting IP address message, and the next step is the same with the first
initialization.
3.4 Transmit the Setting IP Address Message
When using UART to set the module IP address, user board (host) need to send initialize commands to
GS11-MT.
GS11-MT reads these pins BAUD0, BAUD1 and BAUD2 that select The UART baud rate when it power on
or reset.
1. Request message--- (user board->module)
Byte
Modbus TCP to Modbus RTU Mode
0
message length is 17 which includes all following bytes except the check sum byte and the length
byte , high-byte first
1
2
Reserved, always 0
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
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