Product characteristics:
This module converts TTL signals into CAN signals. It adopts serial port as the interface of embedded system, which is simple for data transmission, no need to learn CAN protocol, shorten the development cycle and reduce the development cost. The module is compatible with 3.3V and 5V power supply, has a small area and adopts half-hole process, which is easier to be embedded in the system. The module is equipped with a 32-bit ARM processor and a CAN level converter chip. 14 groups of shielding filters, each with five frame filtering methods. Parameter setting is AT command setting mode, the command is simple and concise, only 6 commands.
The parameter setting is AT instruction setting mode, the instruction is simple and concise, there are only 6 instructions. Wider baud rate range, strong network adaptability. Application areas of the module: intelligent buildings, industrial control equipment, intelligent home and automotive electronics.

Product parameters:
Adopting ARM processor with CortexM3 core, stronger data processing capability and lower power consumption, the processor integrates CAN controller to make transmission more time-saving.
5V, 3.3V power supply, LDO linear voltage regulator
CAN baud rate range: 3Kbps-1Mbps fully supports CAN bus 2.0A and 2.0B specifications.
Serial baud rate range:4800bps-460800bps
Sampling point automatically adjusted to or close to the CIA value
Offline self-recovery function
14 groups of 32-bit shielding filters, arbitrary selection, arbitrary settings
Parameters can be set through the AT command, and power-down save
Data transmission speed:>600 frames per second
Hardware and software two ways to restore the default parameters
Message data length 0-8 bytes can be set arbitrarily.
With surge protection circuit, inhibit transient interference, protect the internal circuitry

Instructions for use:
The serial port of this module is TTL 3.3V signal, can not be connected with 232 signal!!!! If you want to connect with 5V system, it is better to have 5V to 3.3V circuit.
The module has a status indicator, in communication mode, blinking frequency is 1Hz; in the configuration mode, blinking frequency is 5Hz.

Restore Default Parameters Function Operating Instructions.
Method 1:First pull down the CFG pin of the module, after pulling down the module's indicator light flashes fast at a frequency of 5Hz. Then open the Open the parameter setting software, configure the baud rate of the serial port, and then click the one-key read button, after reading the parameters successfully, then click the Restore Default Settings button. After reading the parameters successfully, click the button to restore the default settings. When you read all the parameters again, the parameters will be restored to the above values. The baud rate of serial port is 115200 in factory, if you have changed it and forgotten it, you can only use method 2 to restore it.
Method 2: If method 1 fails, you can only use this method. First power off, short the RT interface on the module (as shown in the figure below), and then reconnect it. The RT interface must not be shorted all the time, otherwise the parameters will be restored to the default values every time the module is powered up. The RT interface must not be shorted all the time, otherwise the parameters will be restored to default values every time the power is turned on.