PCIe-S142i – PCI Express, 2-Port RS-422/485 Communication Board
New Products
2022-03-17

Model Name | VEX-142 | VEX-142i | PCIe-S142 | PCIe-S142i | |
---|---|---|---|---|---|
Product Status | Phased out | Available Soon | Released | ||
Bus Type | PCI Express x1 | ||||
COM1 ~ COM2 | RS-422/485 | The RS-422 and RS-485 cannot be used simultaneously | |||
RS-422 | TxD+, TxD-, RxD+, RxD-, RTS+, RTS-, CTS+, CTS-, GND | ||||
Baud Rate | 50 to 115200 bps | 300 to 921600 bps | |||
Data bit | 5, 6, 7, 8 | ||||
Stop bit | 1, 1.5, 2 | ||||
Parity | None, Even, Odd, Mark, Space | ||||
Hardware FIFO | 128 bytes | 256 bytes | |||
Driver | OXPCIe952 Solution | XR17V352 Solution | |||
Isolation | - | 2500 VDC | - | 3000 VDC | |
Dimensions (mm) | 94 x 110 x 22 (W x L x D) |
Introduction:
PCIe-S142i communication card provides 2 RS-422/485 serial ports. Each port is equipped with a 256-byte hardware FIFO, and offers speed up to 921600 bps. The PCIe-S142i card support drivers that allow to choose an available COM port number automatically.In harsh industrial environments, the on-board ESD protection component diverts the potentially damaging charge away from sensitive circuit to protect the computer and equipment from being damaged by the sudden or momentary electric current.
The serial communication card is designed for use with intelligent devices like bar code reader, serial printers, intelligent sensors, instrumentation equipment, computers and almost any device with an RS-422/485 port.

Hardware FIFO up to 256 bytes:
FIFO stands for "First In, First Out", an abstraction in ways of organizing and manipulating data relative to time and prioritization. FIFO is used for buffering and flow control while data come from hardware to software. When using hardware FIFO (buffer), a little delay on software or operating system will not lost data at all.
PCIe-S142i card are equipped with 256-byte hardware FIFO for each port. Large hardware FIFO is useful to prevent data lost when your system works on heavy loading, e.g. while running on a multi-task operating system, such as Windows, Linux… etc.
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For more information:
PCIe-S142i web site
https://www.icpdas.com/en/product/PCIe-S142i