USB to 4-channel RS485 module with metal case and rail is a serial communication module designed for industrial control scenarios.The USB signal can be converted into 4 balanced differential RS485 signals with a stable transmission rate. The reliable transmission rate is ≤3M
dopt original chip CH344Q, SP485, 480Mbps high-speed USB interface communication, reliable, good compatibility.
Adopt USB-B interface and 5.08mm terminals, smooth plugging and unplugging, sturdy and reliable.
With independent power isolation and signal isolation circuit.
USB terminal with electrostatic ESD protection circuit, effective prevention of electrostatic damage, to protect the rear circuit and equipment.
RS485 terminal with over-current protection, surge protection, lightning gas discharge protection circuit.
On-board 120R termination resistor selector toggle switch, which can increase the stability of signal transmission and reduce interference.
Baud rate support range: up to 3Mbps (In actual application, the baud rate supported by this module is limited by the baud rate supported by the access devices at both ends, which needs to be adjusted according to the actual situation.)
There are 4 kinds of LED indicators on board, which are used to indicate the sending and receiving status of the circuit signals.
Red LED: Power indicator
Yellow LED: ACT pin indicator, used to indicate the status of USB configuration completion
Green LED: 4-channel 485 signal transmission indicator, data flow direction: USB->485 .
Blue LED: 4-way 485 signal receiving LED, data flow: 485->USB.
Aluminum alloy shell, oxidized and frosted treatment, precise opening, solid and durable, exquisite workmanship.