PCL-745B-研华双端口高速RS-232/485接口卡-深圳市康新祥有限公司

深圳市康新祥有限公司

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PCL-745B研华双端口高速RS-232/485接口卡

参考价:	面议

参考价:

面议

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PCL-745B 产品型号
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经销商 厂商性质
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产品简介

双端口高速RS-232/485接口卡含3000 VDC隔离保护

产品介绍

主要特点

two independent rs-422/485 serial ports

2个独立的rs-422/rs-485串行接口

provides 3000 vdc isolation

提供3000 vdc隔离保护

16c550 uarts with on-chip 16-byte fifo

带16字节fifo的16c550 uart

transmission speeds up to 921.6 kbps

传输速率可达921.6 kbps

i/o address and interrupt se-lectable

i/o地址和中断可选

wide irq se-lection: 3, 4, 5, 6, 7, 9, 10, 11, 12 or 15

supports 2 wire or 4 wire operation

supports tx, rx, rts, and cts signals

automatic rs-485 data flow control or rts control

termination resistors jumper enable/disable

space reserved for optional surge protection on data lines

supports standard dos com1, com2, com3, and com4

supports windows? 98/2000/xp, linux?

内容介绍

the pcl-745 series card provides two rs-422/485 serial ports.each port utilizes a 16c550 uart with an on-chip 16-byte fifo buffer for reliable, high-speed serial i/o. the uart buffer divides data into 16-byte packets before sending them onto the bus. this drastically reduces the cpu load and avoids data loss due to failure to respond to the interrupt request in time. the uart is especially useful for high speed serial i/o under windows. the pcl-745b card differs from the pcl-743b card in that the former uses on-board optical isolators to protect your pc and equipment against damages from ground loops, increasing system reliability in harsh environments.

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