USB to RS 485 Converter Adapter with CH 340/341 Chipset Supports All Windows Version

USB to RS485 Industrial Converter Module Adapter Board 5V is designed in accordance with industrial standards. It has anti-lightning and anti-static shock, limited slope drive, effectively suppresses electromagnetic interference, and solves the superposition of effective signal and invalid signal on the transmission circuit. The error-free data transmission rate is up to 115200bit. With TVS transient suppression protection to prevent internal chip damage caused by level incompatibility, with receiving and transmitting lights; anti-high pulse voltage protection.

Features:

• Support plug and play and hot plug (USB side)
• Support baud rate range: 75-115200bps
• Fully compliant with USB 2.0 standard, compatible with USB1.1
• Communication distance can reach 1.2KM, with industrial site anti-interference ability
• TVS transient suppression protection
• Fully compliant with USB 2.0 standard, compatible with USB1.1
• Support plug and play and hot plug (USB side)
• Extended temperature range from -40°C to +85°C

Specifications:

Pin Description:

• pin 1:  A--485 Signal Terminal A
• pin 2:  B--485 Signal Terminal B
• pin 3:  GND--485 signal ground (optional)
• pin 4:  GND- external power supply ground (can be used to supply power to other equipment or it can be empty)
• pin 5:  VCC - external power supply 5V+(can be used to supply power to other equipment or it can be empty)

Wiring instructions

• USB interface: plug directly into the computer USB interface when using
• RS485 bus interface: module A interface is connected to target device A interface, module B interface is connected to target device B interface (some device flags D+ means A, D- means B)
• Up to 256 related devices can be attached to the bus

Steps for usage:

• Download and install the CH340 driver first
• Wire the device
• Insert the RS485 module into the computer, check the mapped serial port number in the “Device Management Department” of the system, then select the corresponding serial port number in your application software and open  the serial port to send and receive data

Applications

• Parameter setting of various RS485 port devices, data transmission communication and LED display communication data, etc.
• Monitoring data reading and writing and PTZ control
• Home appliance control
• Various industrial automation, instrumentation
• Access control system, charging system, attendance system, etc.