Introduction - SeaLevel COMM+8.422.PCIe User Manual

Introduction

The Sealevel COMM+8.422.PCIe (Item# 7802ec) is a PCI Express 2.0 Gen 1 compliant interface adapter
with eight field selectable RS-422/485 asynchronous serial ports supporting data rates exceeding 1 Mbps
for industrial automation and control applications.
Configure the serial ports as RS-422 for long distance device connections up to 4000ft. where noise
immunity and high data integrity are essential. Select RS-485 and capture data from multiple peripherals in
an RS­485 multi-drop network. Up to 31 RS-485 compliant devices can be connected to each port to
automate your data collection. You can even mix the ports in any of the electrical interface combinations
to provide maximum flexibility in your application.
Under Windows, in RS-485 mode the transmitter is automatically enabled in hardware, eliminating the need
for application software control. This allows the 7802ec to be used with standard serial communications
applications and removes the risk of bus contention and data corruption. The Sealevel SeaCOM for
Windows software driver and utilities make installation and operation easy in Windows 7/8.1/10.
The product is RoHS compliant and meets the requirements of RoHS (2011/65/EU) directive.
Features
Eight serial ports configurable for RS-422/485
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On board DIP switch configuration with Windows device driver override
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Ultra High-speed UART with 256-byte TX and RX FIFOs
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• Asynchronous data rates exceeding 1 Mbps
Automatic RS-485 enable/disable for Windows applications
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Includes 36" cable that terminates to eight DB9M connectors
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© Sealevel Systems, Inc. 7802ec &7802ecS Manual | SL9680 11/2022
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