Communications
New Four Port Serial Interface Adds RS-232/422/485 Ports to PCI Express Bus
Sealevel Systems, Inc. introduces the COMM+4.PCIe new serial interface, which delivers the ultimate flexibility for expanding serial communications in a variety of test and measurement, process control and point-of-sale applications.
The In RS-485 mode, the board provides automatic control of the RS-485 driver in hardware, allowing the 7404e to be used with standard serial communications without the risk of bus contention and data corruption. Additionally, RS-485 network termination, critical to robust multi-drop communication, can be selectively added to the circuit via DIP-switches. In RS-232 mode, all modem control signals are implemented for maximum compatibility with a variety of serial peripherals such as PLC's, bar code readers, scales, and other data acquisition/control devices.
Product Highlights
Each port individually configurable for RS-232, RS-422, or RS-485
• 16C954 buffered UARTs with 128-byte FIFOs
• Each port supports data rates to 921.6K bps
• Oscillator and clock prescalar support wide range of baud rates
• Supports 9-bit protocol framing
• RS-485 line termination, pull-up and pull-down resistors for each port are selectable via
dipswitch
• RS-485 ECHO can be enabled/disabled via dipswitch
• PCI Express X1 compliant
• Compatible with all standard size PCI Express slots
• All modem control signals implemented in RS-232 mode
• Automatic RS-485 enable/disable in hardware
• Included 36 cable terminates to four DB9M connectors (Item# CA143)
Sealevel SeaCOM software driver and utilities make installation and operation easy using Microsoft Windows and Linux operating systems. The COMM+4.PCIE (Item# 7404e) ships with a 36-inch cable that terminates to four DB9M connectors.
Ultra COMM+4.PCIE prices start at $369.00 and quantity discounts are available.