ISA 2-Port RS-232, RS-422, RS-485 Serial Interface

Part: 3087   Model: COMM+2/EX

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The 3087 ISA serial interface provides two RS-232, RS-422, or RS-485 Asynchronous links to data collection and other devices. Fully independent operation of ports allows the configuration of the 3087 with either two RS-232 ports, two RS-422, RS-485 ports or with a combination of one RS-232 port and one RS-422, RS-485 port. Extended AT interrupts allow multiple serial ports to be assigned to different IRQ lines.

Note: This item has a minimum order quantity (MOQ) of 25 units. Please contact your sales representative with any questions.


Additional information

Communications Chip


Electrical Interface

RS-232, RS-422, RS-485

Humidity Range

10 – 90% Relative Humidity, Non-Condensing

Host Interface(s)


Max Data Distance

4000 feet

Max Data Rate

115.2K bps

Operating Temperature

0°C to 70°C (32°F to 158°F)

# of Ports


RS-485 Operation

Full Duplex (4 wire)Half Duplex (2 wire)

Serial Connector(s)


Storage Temperature

-50°C to 105°C (-58°F to 221°F)

UART Series

550 UART

RS-485 two or four wire operation
Individually selectable interrupts (2-5, 7, 10-12 and 15)
Windows Auto RS-485 driver software included
Selectable address including COM1COM4 and any I/0 address up to 3FF Hex

Windows Software

Software: SeaCOM - Windows

Linux Software

Software: SeaCOM - Linux


Datasheet: 3087


Manual: 3087


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