Data Transmission Test; Operating Mode Is As Follows - Ebyte E840-TTL-4G02E User Manual

Chengdu Ebyte Electronic Technology Co.,Ltd

2.2 Data transmission test

Software tools used for the test are as follows：
Any serial port assistant, XCOM is used in this manual, which can be downloaded from our official website.
2.1.1 Operating mode is as follows：
1. Operating mode includes: transparent transmission mode、AT configuration mode
a) Transparent transmission mode: After power-on, the radio works in the transparent transmission mode by default, and
automatically starts the network connection. When the connection is established with the server, any data received by the serial port
will be transparently transmitted to the server. At the same time, it can also receive data from the server. After receiving the server data,
the module will output directly through the serial port. The maximum length of data supported by this module is 10 bytes. When
multiple links are connected to the server at the same time, the data packet will be sent to the four links at the same time. When there
are data to be sent from any network link, the radio will transparently output the data.
b) Protocol transmission: This module supports 4-channel Socket connections. For each socket users can configured it as TCP
Client or UDP Client. When sending data, users can use protocol transmission or transparent transmission.The maximum length of
data supported by this module is 1024 bytes.
Protocol transmission format
Transmit：0x55 0xFE 0xAA ID data
For example： 55 FE AA 00 AA BB CC
to transmit
Receive：0xAA 0XFE 0x55 ID data length Data
For example：AA FE 55 00 00 03 11 22 33
11 22 33：real data
Demonstration：
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//00：SOCK0 link， AA BB CC： the data that the user actually needs
//00: SOCK0 link， 00 03： the valid data length received this time
E840-TTL-4G02E User Manual
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