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INTERFACES

TRADITIONAL

PC ADAPTER CARD

Form 468-010131

DATA

 

SHEET

page 1/6

Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • Phone: (951) 695-3000 • (800) 321-OPTO • Fax: (951) 695-3095 • www.opto22.com

Inside Sales: (800) 321-OPTO • Product Support: (800) TEK-OPTO • (951) 695-3080 • Fax: (951) 695-3017 • E-mail: [email protected]

Description

The AC24AT is an RS-422/485 adapter card that plugs directly into the IBM PC bus and provides up to 4,000 VAC isolation

between the PC bus and the communications link. The AC24AT is also transient protected, features bi-directional handshake
lines for RTS and CTS, and can drive up to 100 devices on a multidrop network. The AC24AT adapter card can be jumpered for
operation as COM1, COM2, COM3, or COM4 and offers full hardware and software compatibility with IBM AT, PS/2 Model 30
286, and compatible computers.

The AC24AT operates as a full duplex device with transmission speeds up to 38,400 baud for distances up to 5,000 feet using

two twisted pairs and a ground wire.

Part

Number

Description

AC24AT

ISA Bus Serial Port RS422/485, Isolated

Summary of Contents for AC24AT

Page 1: ...isolation between the PC bus and the communications link The AC24AT is also transient protected features bi directional handshake lines for RTS and CTS and can drive up to 100 devices on a multidrop...

Page 2: ...5 3017 E mail sales opto22 com Specifications Dimensions Power Requirements 250 mA at 5 VDC 150 mA at 12 VDC 150 mA at 12 VDC Operating Temperature Range 0 C to 60 C 95 relative humidity non condensin...

Page 3: ...s COM1 through COM4 Select which COM port is to be used based on the current configuration of the COM ports in the host PC Refer to the following table for jumper settings for the various COM ports Co...

Page 4: ...When RTS is inactive the driver is disabled If Jumper B7 is installed jumpers B1 and B3 must also be installed These jumpers passively pull the transmit lines to OPTOMUX to the inactive state If the...

Page 5: ...When a jumper is not present the jumper value is high one With no address jumpers present the adapter card will be selected from address 3F8 to 3FF hex Addressed as COM1 You can set the adapter card...

Page 6: ...ommunications and therefore requires that the COM1 or COM2 interrupt jumpers be installed when doing communications using COM1 or COM2 from BASIC Group B and C Jumpers The figure below shows the norma...

Page 7: ...ions hardware data service plan and Web portal in one easy to use package Visit nvio opto22 com for moreinformation Opto 22 Software Opto22 sioProjectandFactoryFloor software suites provide full featu...

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