INTERFACES
TRADITIONAL
ST AND ALONE ADAPTER CARDS
Form 960-010126
DATA SHEET
page 1/2
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: sales@opto22.com
The AC7A/B is a stand-alone adapter card that converts RS-232 serial communication to RS-422/485 serial communication,
which is directly compatible with the Optomux family of intelligent brain boards.
Description
RS-422/485 balanced line drivers
Operates with up to 5,000 feet of RS422/485 cable
Optical isolation between RS-232 and RS-422/485 lines
Visual LED indicators for transmit, receive, RTS, CTS, and power
Transmission speeds up to 115,200 bits per second.
Only “REV L” boards and above (AC7A) and “Rev C” boards and above
(AC7B), can be used up to 115,200 baud. Earlier revision boards will
operate up to 38,400 baud only.
Part
Numbers Description
AC7A RS232-RS422/485 Converter 120V
AC7B RS232-RS422/485 Converter 220V
Introduction
Features
INTERFACES
TRADITIONAL
ST AND ALONE ADAPTER CARDS
Form 960-010126
DATA SHEET
page 2/2
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: sales@opto22.com
Specifications
Dimensions
Power Requirements
AC7A
AC7B
115 VAC ± 10 VAC @ 50-60 Hz
220 VAC ± 20 VAC @ 50-60 Hz
Power Consumption 0.1 amps @ 115 VAC
5 watts (dissipation)
Operating
Temperature Range
0° C to 70° C
0 to 95% Humidity (non-condensing)
Optical Isolation 4,000 V between RS-232 and RS-422/485
RS-232 Interface 25-pin, DB-25 female connector
RS-422/485 Interface Screw terminals or 9-pin, DB-9 female connector
Baud Rate Up to 38,400 baud; 115.2KBd in Rev. L (AC7A) and later
and in Rev. C (AC7B) and later.
RS-232 Distance Up to 50 feet
RS-422/485 Distance Up to 5,000 feet at 38,400 baud (3,000 feet at 115,200 baud)
Communications RS-422/485 full duplex over two twisted pairs and a ground.
Additional twisted pairs for RTS and CTS.
Also supports RS-485 2-wire mode. This requires user to
build a custom RS-232 cable.
Indicators Transmit, receive, RTS, CTS, and power
© 1997–2001 Opto 22. All rights reserved. All trademarks, trade names, logos, and service marks referenced herein belong to their respective companies.
INTERFACES
TRADITIONAL
ST AND ALONE ADAPTER CARDS
Form 960-010126
DATA SHEET
page 3/2
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: sales@opto22.com
LATEST PRODUCTS
PRODUCT SUPPORT
COMPANY INFORMATION
Products
Opto 22 produces a broad array of reliable, flexible hardware and
software
products for industrial automation, remote monitoring, enterprise
data acquisition, and machine-to-machine (M2M) applications.
SNAP Ethernet Systems
Based on the Internet Protocol (IP), SNAP Ethernet systems offer
flexibility in their network connectivity and in the software applications
they work with. The physical network may be a wired Ethernet network, a
cellular wireless network, or a modem. A wide variety of software
applications can exchange data with SNAP Ethernet systems, including:
Opto 22’s own ioProject™ suite of control and HMI software
Manufacturing resource planning (MRP), enterprise management,
and other enterprise systems
Human-machine interfaces (HMIs)
Databases
Email systems
OPC client software
Custom applications
Modbus/TCP software and hardware.
SNAP Ethernet system hardware consists of controllers and I/O units.
Controllers provide central control and data distribution. I/O units provide
local connection to sensors and equipment.
SNAP OEM Systems
Opto 22 SNAP OEM I/O systems are highly configurable, programmable
processors intended for OEMs, IT professionals, and others who need to
use custom software with Opto 22 SNAP I/O modules.
Linux® applications running on these systems
can read and write to analog, simple digital, and serial
I/O points on SNAP I/O modules using easily
implemented file-based operations. Applications can
be developed using several common development
tools and environments, including C or C++, Java,
and shell scripts.
M2M Systems
Machine-to-machine (M2M) systems connect your business computer
systems to the machines, devices, and environments you want to monitor,
control, or collect data from. M2M systems often use wireless cellular
communications to link remote facilities to central systems over the Internet,
or to provide monitoring and control capability via a cellular phone.
Opto 22’s Nvio™ systems include everything you need for M2M—
interface and communications hardware, data service plan, and
Web portal—in one easy-to-use package. Visit nvio.opto22.com for
more information.
Opto 22 Software
Opto 22’s ioProject and FactoryFloor® software
suites provide full-featured and cost-effective
control, HMI, and OPC software to power your
Opto 22 hardware. These software applications
help you develop control automation solutions, build
easy-to-use operator interfaces, and expand your
manufacturing systems’ connectivity.
Quality
In delivering hardware and software solutions for worldwide device
management and control, Opto 22 retains the highest commitment to
quality. We do no statistical testing; each product is made in the U.S.A.
and is tested twice before leaving our 160,000 square-foot manufacturing
facility in Temecula, California. That’s why we can guarantee solid-state
relays and optically-isolated I/O modules
for life
.
Product Support
Opto 22’s Product Support Group offers comprehensive technical
support for Opto 22 products. The staff of support engineers represents
years of training and experience, and can assist with a variety of project
implementation questions. Product support is available in English and
Spanish from Monday through Friday, 7 a.m. to 5 p.m. PST.
Opto 22 Web Sites
www.opto22.com
nvio.opto22.com
www.internetio.com (live Internet I/O demo)
Other Resources
OptoInfo CDs
Custom integration and development
Hands-on customer training classes.
About Opto 22
Opto 22 manufactures and develops hardware and software products
for industrial automation, remote monitoring, enterprise data acquisition,
and machine-to-machine (M2M) applications. Using standard,
commercially available Internet, networking, and computer technologies,
Opto 22’s input/output and control systems allow customers to monitor,
control, and acquire data from all of the mechanical, electrical, and
electronic assets that are key to their business operations. Opto 22’s
products and services support automation end users, OEMs, and
information technology and operations personnel.
Founded in 1974 and with over 85 million Opto 22-connected devices
deployed worldwide, the company has an established reputation for
quality and reliability.
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 • Email: sales@opto22.com • Form 1335-050601
© 2004-2005 Opto 22. All rights reserved. All trademarks, trade names, logos, and service marks referenced herein belong to their respective companies.