CHY FIREMATE CO. LTD. 2401M Manuel D’Utilisation
3. Pin Definition
Pin No.
Pin Type
Function Description
1
Digital I/O
GPIO/ UART_RX
2
Digital I/O
GPIO/ UART_TX
3
Digital I/O
GPIO / Digital IO
4
Digital I/O
GPIO / Digital IO
5
Digital I/O
GND
6
Digital I/O
Vcc
7
Digital I/O
Vcc Enable
8
Digital I/O
GPIO / CTS
9
Digital I/O
GPIO / RTS
10
Digital I/O
GPIO / Digital IO
4. Protocol :
Communication parameters： 115200 , 8 , n , 1
The maximum of every packet in the two-way communication is 20 Bytes
Every communication will be transferred by the packet, it's an one-inquiry-one-answer
approach.
When a host sends an inquiry packet, clients will answer with a received packet.
Host RXD Time Out：0.5 sec.
The maximum of every packet in the two-way communication is 20 Bytes
Every communication will be transferred by the packet, it's an one-inquiry-one-answer
approach.
When a host sends an inquiry packet, clients will answer with a received packet.
Host RXD Time Out：0.5 sec.
Format of command and answer packet：
(1Byte)
(1Byte)
(1Byte)
(1Byte)
(nByte)
Start code
Length of
packet
packet
Command Type
Command Code
Command
Parameter
Parameter
Start code of the host, fixed with ‘$’(24H)
Start code of the answer of client , fixed with ‘%’(25H)
Command type and code are defined by HEX Code
Command parameter is based on the conditions of the command, there are HEX Code ,
or ASCII Code.
When a host sends a wrong structure or command of a packet, clients won't answer any
Start code of the answer of client , fixed with ‘%’(25H)
Command type and code are defined by HEX Code
Command parameter is based on the conditions of the command, there are HEX Code ,
or ASCII Code.
When a host sends a wrong structure or command of a packet, clients won't answer any
1
2
3
4
5
6
7
8
9
10