Specifications

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919
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IV. Data communication
4.1 Transparent data
When the module is in the transmission mode, the data transmission can be realized through
the module serial port.
Serial Communication Frame Structure: Send
Name of
name
Target
address
Channel
Data
domain
Symbol
Target
Channel
Data
bytes
2
1
Maximum
248
Value
◆ Target address: address number of Target: data target, Hex code 2 bytes.
When the target address is 0xFF 0xFF, it is a point-to-multimode; if the target address is not
0xFF 0xFF, it is a point-to-point mode.
◆ Channel: Channel: data target communication 1 channel,
◆ Data domain: Data: transparent data, Hex code, maximum length of 248 bytes.
Serial Communication Frame Structure: Receiving
Name of
name
Data
domain
Symbol
Data
bytes
Maximum
248
Value
◆ Data domain: Data: transparent data, Hex code, maximum length of 248 bytes.
4.2 Configuration data (AT instruction set)
When the module is in configuration mode, the module can be configured through the
module serial port.
4.2.1 instruction brief
Note 1: AT instructions are uppercase, all end with enter, newline character:[\r\n]
Note 2: module in upgrade mode, only AT+UPDATE instructions, other instructions do not do
processing and return.
Note 3: module in the configuration function, received AT instruction error or parameter error,
return ERROR error message.
Note 4: under the operation of AT instruction, the baud rate of fixed serial port is 96001 bit stop