OPTO 22 001818K AC24AT Adapter Card Interface 250mA 5VDC 150mA

OPTO 22 001818K AC24AT Adapter Card Interface 250mA 5VDC 150mA

Product Details

The AC24AT and AC422AT cards provide an asynchronous RS-422/485 communications port for the ISA bus. The adapter cards are seen by the computer as standard COM ports.

These cards are transient protected, feature bi-directional handshake lines for RTS and CTS, and can drive up to 32 devices on a multi-drop network. They are designed for communicating to Optomux brain boards in RS-422/485 4-wire mode and support baud rates up to 115.2 kbaud.

In addition, the AC24AT card provides 4,000 volts of isolation between the ISA bus and the communications link. The AC24AT card can also be set up for RS-485 2-wire mode; however, special software drivers are required to take advantage of this. These special software drivers are not provided by Opto 22. For 2-wire RS-485 solutions, use Opto 22's AC37 (ISA bus adapter) or AC7A (stand-aloneRS-232 to RS-422/485 converter)

Features

The adapter card uses the standard 16550 UART and appears as a standard COM port

Transient protection for RS-422/485 lines

Multi-drop capability

RS-422/485 balanced line drivers

Up to 5,000 feet of cable length using shielded twisted-pair cable

Data rates from 300 baud to 115.2 kbaud

Bi-directional handshake lines (RTS, CTS)

LED indicators for Transmit, Receive, RTS, and CTS

Jumper-configurable termination and biasing for RS-422/485 lines

Model AC24AT provides 4,000 volts of optical isolation between the computer

Model AC24AT provides transformer isolation between the computer's 5 VDCAC24AT/AC422AT User's Guideto the computer and the RS-422/485 lines and the RS-422/485 lines

Specifications

Baud Rate: 38400 Baud

Contact Rating: 250 mA @ 5 VDC, 150 mA @ ± 12 VDC

For Use With: Computer

Indicator: Transmit, Receive, RTS, and CTS

Interface: RS-422/485 (9-Pin, D-Shell Female Connector)

Isolation Voltage: 4000 VAC

Operating Temperature: 0 to 60 °C

Series: AC Series

Type: ISA

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