PCI Board

Empowering Innovations

VXC-142iAU/VXC-142AU/VEX-142/VEX-142i

VXC-142iAU/VXC-142AU/VEX-142/VEX-142i

The VXC/VEX-142 series card provides two RS-422/RS-485 serial ports. Each port can be configured as either RS-485 for half-duplex or RS-422 for full-duplex communication. It supports for speed up to 115200 bps and supports full-duplex communication.

Users may specify a COM port number manually by setting dip switch, or let the driver choose an available number automatically. The driver provides a maximum of 128 KB software FIFO for each COM port under Windows. It's practical for large file transmission.

The data lines of each serial ports on i version VXC/VEX cards come with photocouplers design. The on-board photo couplers use a short optical transmission path to transfer a signal between elements of a circuit, and keep the data lines electrically isolated. It can help cutting down on ground loops, common mode voltages and block voltage spikes, provide electrical isolation, and offer significant protection from serious over-voltage conditions in one circuit affecting the other.

Specifications
Models VXC-142AU VXC-142iAU VEX-142 VEX-142i
Communication Port
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
RS-485 2-Wire Data+, Data-, GND
Bias Resistor Yes, 1 KΩ
Node 256 (max.)
UART 16C950 compatible
Baud Rate 50 - 115200 bps
Data bit 5, 6, 7, 8
Stop bit 1, 1.5, 2
Parity None, Even, Odd, Mark, Space
FIFO Internal 128 bytes
Isolated - 2500 VDC - 2500 VDC
General
Bus Type Universal PCI, 3.3 V and 5 V, 33 MHz, 32-bit, Plug and Play PCI Express x1, Plug and Play
COM-Selector Yes (8-bit DIP switch)
Connector 2 x DB9 (Male)
Power Consumption 100 mA @ 5 V 480 mA @ 5 V 120 mA @ 5 V 440 mA @ 5 V
Operating Temperature 0 °C ~ +60 °C
Storage Temperature -20 °C ~ +70 °C
Humidity 0 ~ 90% RH, non-condensing
Dimensions (L x W x D) 134 mm x 90 mm x 22 mm 110 mm x 94 mm x 22 mm