4-channel isolated serial communication module CHR34907
Promulgator
：admin Time：2019-10-30
product description
CHR34907 is a USB bus interface, 4-channel RS-422/485 bus, isolated communication card, designed for long-distance, multi-point and computer data acquisition applications. It is a tailor-made for industrial automation system integrators. New solution.
The CHR34907's four RS-422/485 serial communication rates are up to 12Mbps. In the RS-485 mode of operation, up to 31 devices can be communicated in a daisy-chain mode with a communication distance of up to 1.2 km.
For long-distance RS-485 communication, 2KV optical isolation can effectively prevent damage caused by potential difference of CHR34907.
Product Features
USB 2.0 bus;
4-channel RS-422/485 serial card, 2.5KV isolated, and isolated between channels;
The baud rate is 183bps ~12Mbps, and the software can be set;
Built-in 120 ohm terminating resistor, which can be selected by jumper;
2K bytes of transmit buffer per channel;
2K bytes of receive buffer per channel.
A detailed description
RS-422/485 communication
Number of channels: 4 channels
Baud rate: 183bps ~12Mbps
Isolation: 2.5KV isolation, and isolation between channels
Interrupt resistor: built-in 120 ohm terminating resistor, selectable by jumper
Send buffer: 2K bytes per channel
Receive buffer: 2K bytes per channel
General specifications
Physical size: 78mm × 78mm
Connector: J30J-25ZKW
Working power: 5V ± 0.5V
External power supply / USB self-power supply optional
Power consumption: 50mW
Weight: 37g
Use environment:
Storage temperature: -40 ° C to +85 ° C
Operating temperature: -20 ° C to +60 ° C
Working humidity: 10~90%, no condensation
software support
Support Windows XP/Vista/7/8/10, Linux, Wince operating system
