Description

The APCIe-7420 communication card is configured by inserting SI modules which the board identifies automatically. The interface can be configured through modules in the following modes: RS232, RS422, RS485 and current loop (with optical isolation). The SI 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
• Modular mounting through SI modules: 2 sockets for 2-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
• UART 16C950, downward compatible to 16C450
• 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

• SI 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
• Internal diagnostic possibility, break, parity, overrun and framing error

Applications

• Industrial serial communication
• Data acquisition
• Multi-user systems
• PLC interface
• Multidrop applications
• Modem and printer control, etc

Software drivers

Standard drivers and samples for:

• Linux
• Windows (32/64)
• Real-time with Linux (i.e Xenomai) and Windows (i.e RTX) on request

On request:

Further operating systems, compilers and samples. Driver download: www.addi-data.com/downloads