RS485 Interface：Two connectors
+: +5V DC Power +5V
-: GND Ground
A: A RS485 A(+)
B: B RS485 B(-)
ISP Pin: For factory firmware uploading
Communication LED: As the device is powered up, this LED will flash four times which indicates
that the sensor is working properly. This LED will also flash when it is communcating with other
devices.
Jumper A: Not in use
Jumper B: When the sensor is working under a network, only the Jumper B for the first Device and
the last Device need to be bridged.
CommunicationProtocols
The device is fixed at 19200 bps Baud Rate,8/N/1.
Note:The previous version has 115200 bps Baud Rate,8/N/1.
Set Device Address
Command:
Return Value：
PS: The address of each device can be changed when multiple devices are connected. The new
ddress must be between 0x11 and 0x80. If the address is set sucessfully, the flag will be set to
0x01 in the return data. If unsucessful, there is no return data. (The default address for the sensor is
0x12)
Note:The previous default address is 0x11.
Header Cmd Length Cmd Set Address SUM
55 aa AB 1 55 ADD SUM
Header Address Length Cmd Flag SUM
55 aa ADD 1 55 S SUM
