 
4 Port RS422/RS485 smart Universal PCI serial boards with 2 KV isolation protection
Features and Benefits
- Over 700 Kbps data throughput for top performance
- 921.6 Kbps maximum baudrate for super fast data transmission
- ADDC® provides automatic data direction control for RS485 signals
- 128-byte FIFO and on-chip H/W, S/W flow control
- Compatible with 3.3/5V PCI and PCI-X
- Drivers provided for Windows (Vista, 2003, XP, 2000), WinCE 5.0, Linux and Unix
- 15 KV ESD protection on the board
- Added bonus! Ports 1 and 2 support RS232 and RS422/RS485
Introduction
MOXA CP-134U and CP-134U-I 4 port universal PCI boards are designed for industrial automation applications that require a long distance,multi-point, PC-based data acquisition solution.
On-chip Automatic Data Direction Control for precision RS-485 communication
RS485 communication requires precise timing control to enable and disable the line driver. The Moxa Turbo Serial Engine™ chip that powers the CP-134U board comes with on-chip ADDC®, which makes RS485 as easy to use as RS232.
RS485 multidrop for up to 31 devices within 1.2 km
MOXA CP-134U universal PCI board has 4 RS422/RS485 serial ports, each of which can achieve data rates up to 921.6 Kbps. In RS485 mode,the board can connect up to 31 daisy-chained RS485 devices within a range of 1.2 km.
For long distance RS485 communication, 2 KV optical isolation protections are available to prevent equipment damage.
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