Black Box SW421A-R2 Manuel utilisateur

Control up to eight serial devices—

RS-232 or RS-422—from your PC.

Control up to eight serial devices—

RS-232 or RS-422—from your PC.

RS-232 and RS-422 Code-Operated Switches

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FEATURES

• Support speeds to 76.8 kbps!

• Keep your connection safe—once a

connection is made, other ports are

locked out.

• DTE/DCE-selectable, so you can switch

between a modem and a printer.

• Safe for use with laser printers.

• Includes a hardware-handshake lead

in each direction for added control.

Typical application.

OVERVIEW

The BLACK BOX®Code-Operated Switch (RS-232 or RS-422)

enables you to switch your serial devices with codes.

There’s no unintended triggering either—no matter what

data you’re sending. With an internal DIP switch, you select

the arming character to use as a trigger.

You can set each port individually as DTE or DCE. That’s

handy for switching among modems and printers. And your

connection is secure. Once a connection is made, other ports

are locked out. Remember that all ports need to be set to

operate with identical speeds and word structures.

For extra control, there’s a hardware-handshake lead in

each direction in case a device (or the computer) needs it.

Code-Operated Switch

(SW853A-R2)

Serial Printer UNIX®Host

CNC Lathe

Scale

Code-operated switches

BLACK BOX®Code-Operated Switches enable one device to

control up to 64 connected devices, depending on the code-

operated switch. For instance, you can use one modem—not

eight—to control eight devices. Code-operated switches are

ideal for applications that require remote switching for file

sharing or monitoring. Use code-operated switches for:

• Remote programming. Call in via remote sites to access

servers, logic controllers, or any devices that require

programming.

• Diagnostics. From your master control room, you can

probe servers and run diagnostics.

Technically Speaking

TECH SPECS

Data Format — 5 to 8 bits

Speed — 300 bps to 76.8 kbps

Switches — Text/Transparent/Graphics Mode; Reset

CE Approval — Yes

Interface — SW853A-R2–SW854A-R2: RS-232 async;

SW421A-R2: RS-422 async

Connectors — SW853A-R2, SW421A-R2: (5) DB25 female;

SW854A-R2: (9) DB25 female; DCE/DTE switch-selectable

Indicators — (1) 7-segment channel-selected display, (2) lockout

and switch time LEDs

Power — 115/230 VAC, 60/50 Hz, 11 watts (switch-selectable)

Size — 3"H x 12.8"W x 11.3"D (7.6 x 32.5 x 28.7 cm)

Weight — 8 lb. (3.6 kg)

Item Code

Code-Operated Switches

RS-232

4-Port SW853A-R2

8-Port SW854A-R2

RS-422

4-Port SW421A-R2

Ce manuel convient aux modèles suivants

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