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III. Range of Application
The product is applicable to industrial control automatic system, bar code scanner, Palm,
PLC and PLD, PDA (WinCE system), label printer, POS system, data acquisition control system
and security access system, etc.
IV. Functional Characteristics
◎Single chip (ASIC) USB port to serial port communication
◎ Support Windows98/ME and Windows2000/XP, Windows Server 2003/2008, Windows
7/Vista
◎ Support MAC Apple and Linux v5.0
◎ Completely compatible USB v2.0 specification
◎ USB full speed connection
◎USB direct power supply, without external power supply
◎ Support automatic handshake protocol
◎ Reach 57.6kbps transmission rate within 1200m (230kbps at short distance); customize
short-distance rate 500K bps
◎ Conform to TIA/EIA RS-485/RS-422 standard
◎ Support remote wakeup and power supply management
◎ Support point-to-multi-point (RS-485 port at most can be connected with 32 standard 485
devices)
Notices:
(1) RS-485 communication rate of USB485× is affected by communication distance.
Generally, the longer the distance is, the lower the communication rate is. The brief corresponding
table is as follows:
Communication distance
Rate (maximum)
(Numerical values in the above table are ideal. Concrete communication rate will be affected by
actual environment and may not reach the above numerical values)
0~10m
300m
230kbps
115kbps
1200m
3000m
57.6kbps
9600bps
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