Description

The APCI-7500-3/4C communication card is configured by inserting MX modules which the board identifies automatically. The 4-port interface APCI‑7500-3/4C can be used as universal PCI boards in 3.3 V or in 5 V systems, and in PCI or PCI-X systems. The interface can be configured through modules in the following modes: RS232, RS422, RS485 and 20 mA current loop (with optical isolation). The MX modules with optical isolation allow a protection of up to 1000 V for the use in noisy environments where ground loops can occur. The I/O lines are protected against short-circuits, fast transients, electrostatic discharge and
high-frequency EMI. The interface is supported through a 128-byte FIFO buffer for sending and receiving data and guarantees reliable operation at high transfer rates.

Features

• Asynchronous communication adapter
• PCI 3.3 V or 5 V
• Modular mounting through MX modules:4 sockets for 4-port serial interface
• Can be configured as RS232, RS422, RS485, 20 mA
  Current Loop (active, passive), with optical isolation through separate SI modules
• Automatic addressing through BIOS
• Automatic module identification
• 128-byte FIFO buffer for sending and receiving data
• Programmable transfer rate
• 5-, 6-, 7- or 8-bit character
• 1, 1½ or 2 stop bits
• Parity: even, odd or none
• Automatic transmitter control for RS485 and transmitter control through FIFO level
• Common interrupt

Safety features

• MX modules with optical isolation 1000 V
• Creeping distance IEC 61010-1 (VDE411-1)
• Protection against fast transients (Burst)
• Short-circuit protection for RS422 and RS485
• Detection of false start bits
• Internal diagnostic possibility, break, parity, overrun and framing error

Applications

• Industrial serial communication
• Data acquisition
• Direct connection to sensors
• Multi-user systems
• PLC interface
• Multidrop applications
• Weighing devices
• Modem and printer control, etc

Software drivers

A CD containing standard drivers as well as programming samples (source code or compiled) for different programming environments is supplied with the board.
This software can also be downloaded for free from our website (www.addi-data.com/downloads). Software for other operating systems and programming environments is available on request.