Product Description: Dustproof and waterproof stainless steel keyboard, number keys, 2 function keys, and a number display screen. The button layout is compact, with a 0.5mm long button stroke. It adopts a full stainless steel panel and silicone button design, with precise and accurate mold matching. The surface treatment is beautiful and generous.
keyboard echo command
Except for the keyboard receiving command "h, read keyboard version", all other receiving commands will have a response command sent back after being received correctly. The format is as follows: 02+Length +STATUS +[Data]+Bcc+03
Among them, 02 is the data packet header, 03 is the data packet tail, Length is the data length, including the number of data of STATUS+[Data]+Bcc, Bcc is STATUS^Length^Data1^ Data2^... Datan
details as follows:
02 02 AA A8 03 Indicates that the command is received correctly.
02 03 55 E1 B7 03 Indicates an invalid command
02 03 55 E0 B6 03 Indicates that there is an error in checking the received data packet and no operation is performed..
Main features of the screen:
1. The display screen is 16*2 double row screen;
2. Character LCD display adopts COB structure, especially for industrial products;