Black Box CL060A-F Bedienungsanleitung

CUSTOMER

SUPPORT

INFORMATION

Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX

FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746

Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018

Web site: www.blackbox.com • E-mail: [email protected]

JUNE 2000

CL060A-M

CL060A-F

RS-232↔Current Loop Interface

Converter

RS-232 Side

DCE

RS-232↔Current Loop

Interface Converter

DTE

RS-232 Side

DCE

RS-232↔Current Loop

Interface Converter

DTE

FCC INFORMATION

FEDERAL COMMUNICATIONS COMMISSION

AND

INDUSTRY CANADA

RADIO FREQUENCY INTERFERENCE STATEMENTS

This equipment generates, uses, and can radiate radio frequency energy and if not

installed and used properly, that is, in strict accordance with the manufacturer’s

instructions, may cause interference to radio communication. It has been tested

and found to comply with the limits for a Class A computing device in accordance

with the specifications in Subpart J of Part 15 of FCC rules, which are designed to

provide reasonable protection against such interference when the equipment is

operated in a commercial environment. Operation of this equipment in a

residential area is likely to cause interference, in which case the user at his own

expense will be required to take whatever measures may be necessary to correct

the interference.

Changes or modifications not expressly approved by the party responsible for

compliance could void the user’s authority to operate the equipment.

This digital apparatus does not exceed the Class A limits for radio noise emission from digital

apparatus set out in the Radio Interference Regulation of Industry Canada.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites

applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le

brouillage radioélectrique publié par Industrie Canada.

RS-232↔CURRENT LOOP INTERFACE CONVERTER

NORMAS OFICIALES MEXICANAS (NOM)

ELECTRICAL SAFETY STATEMENT

INSTRUCCIONES DE SEGURIDAD

1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de

que el aparato eléctrico sea operado.

2. Las instrucciones de seguridad y operación deberán ser guardadas para

referencia futura.

3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de

operación deben ser respetadas.

4. Todas las instrucciones de operación y uso deben ser seguidas.

5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca

de la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc..

6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que

sean recomendados por el fabricante.

7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea

recomendado por el fabricante.

8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá

a lo descrito en las instrucciones de operación. Todo otro servicio deberá ser

referido a personal de servicio calificado.

9. El aparato eléctrico debe ser situado de tal manera que su posición no

interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá,

alfombra o superficie similar puede bloquea la ventilación, no se debe colocar

en libreros o gabinetes que impidan el flujo de aire por los orificios de

ventilación.

10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor

como radiadores, registros de calor, estufas u otros aparatos (incluyendo

amplificadores) que producen calor.

11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del

tipo descrito en el instructivo de operación, o como se indique en el aparato.

NOM STATEMENT

12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización

del equipo no sea eliminada.

13. Los cables de la fuente de poder deben ser guiados de tal manera que no

sean pisados ni pellizcados por objetos colocados sobre o contra ellos,

poniendo particular atención a los contactos y receptáculos donde salen del

aparato.

14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las

recomendaciones del fabricante.

15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas

de energia.

16. El cable de corriente deberá ser desconectado del cuando el equipo no sea

usado por un largo periodo de tiempo.

17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean

derramados sobre la cubierta u orificios de ventilación.

18. Servicio por personal calificado deberá ser provisto cuando:

A: El cable de poder o el contacto ha sido dañado; u

B: Objectos han caído o líquido ha sido derramado dentro del aparato; o

C: El aparato ha sido expuesto a la lluvia; o

D: El aparato parece no operar normalmente o muestra un cambio en su

desempeño; o

E: El aparato ha sido tirado o su cubierta ha sido dañada.

RS-232↔CURRENT LOOP INTERFACE CONVERTER

TRADEMARKS USED IN THIS MANUAL

Any trademarks mentioned in this manual are acknowledged to be the property of

the trademark owners.

CONTENTS

Contents

1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3. Configuration and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.1 Setting the DCE/DTE Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2 Installing the Converter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2.1 RS-232 to Active Current Loop Running Passive . . . . . . . . . . . . . 8

3.2.2 RS-232 to Passive Current Loop Running Active . . . . . . . . . . . . . 9

4. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.1 Calling Black Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.2 Shipping and Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Appendix A: Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Appendix B: Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

B.1 The Converter’s RS-232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

B.2 The Converter’s Current-Loop Interface. . . . . . . . . . . . . . . . . . . . . . 14

RS-232↔CURRENT LOOP INTERFACE CONVERTER

1. Specifications

Isolation—2500 V RMS via opto-isolators on line side

Maximum Distance—Up to 4 miles (6.4 km) on 24 AWG twisted pair

Operation—Asynchronous, full-duplex

Speed—Up to 115.2 kbps

Transmission Mode—Full- or half-duplex

Transmission Line—19 to 26 AWG twisted pair

Interface—RS-232, V.24 (0.5 mm), 20-mA Current Loop

Temperature Tolerance—32 to 140°F (0 to 60°C)

Altitude—Up to 15,000 ft. (4572 m)

Humidity—5 to 95% noncondensing

Connectors—CL060A-F: RS-232: (1) DB25 female; Current Loop: (1) DB25

male; CL060A-M: RS-232: (1) DB25 male; Current Loop: (1) DB25 female

Power—For passive operation: No external power, uses power from NIC data

and control signals

Size—0.8"H x 2.1"W x 2.2"D (2 x 5.3 x 5.6 cm)

Weight—1.7 oz. (48.2 g)

CHAPTER 2: Introduction

2. Introduction

2.1 Description

The RS-232↔Current Loop Interface Converter lets an asynchronous RS-232

device communicate with a 20-mA current-loop device. The Converter requires no

AC power or batteries to operate as a passive device and supports data rates of up

to 115.2 kbps. When connected to an active current-loop interface, no additional

power is needed. When connected to a passive current-loop interface, DC line

power may be applied to the Converter via pins 9 and 21 of the DB25 current-loop

interface.

Operating in full-duplex mode, the Converter supports communication

distances of up to 4 miles (6.4 km) over two unconditioned twisted pair. To guard

against data loss caused by ground loops, the Converter is equipped with 2500 V

RMS optical isolators on the line side.

The Converter connects directly to either the RS-232 interface or the 20-mA

current-loop interface using a male or female DB25 connector. An external

DCE/DTE switch on the Converter eliminates the need for a crossover cable on

the RS-232 interface.

2.2 Features

• Full-duplex, asynchronous transmission over 4 wires.

• Operates actively or passively.

• Supports data rates of up to 115.2 kbps.

• Maximum distance of up to 5 miles (6.4 km) on 24 AWG twisted pair.

• No AC power required.

• Optically isolated on the line side.

• DB25 connectors on both ends.

• External DCE/DTE switch.

RS-232↔CURRENT LOOP INTERFACE CONVERTER

3. Configuration and Installation

The RS-232↔Current Loop Interface Converter is easy to use. It contains no

internal jumpers or DIP switches to set, so you’ll never have to open the case to

configure the unit. The only configuration required for operation is proper setting

of the external DCE/DTE switch.

3.1 Setting the DCE/DTE Switch

For your convenience, the Converter has an externally accessible DCE/DTE switch

(see Figure 3-1). If the RS-232 device connected to the Converter is a modem or

multiplexor (or is wired like one), set the switch to “DTE.” This setting causes the

Converter to behave like Data Terminal Equipment, transmitting data on RS-232

pin 2 and receiving data on pin 3.

If the RS-232 device connected to the Converter is a PC, terminal, or host

computer (or is wired like one), set the switch to “DCE.” This setting causes the

Converter to behave like Data Communications Equipment, transmitting data on

RS-232 pin 3 and receiving data on pin 2. Remember, the switch setting is always

from the point of view of the Converter, not the connected equipment.

Figure 3-1. DCE/DTE Switch Positions.

3.2 Installing the Converter

You can install the Converter in two different applications: RS-232 to active current

loop or RS-232 to passive current loop.

3.2.1 RS-232

CTIVE

URRENT

OOP

UNNING

ASSIVE

The simplest installation of the Converter is into environments where an RS-232

device is communicating with an active current-loop device. In this case, both the

RS-232 and current-loop interfaces are automatically supplying power to the data

circuit. As Figure 3-2 illustrates, only 4 wires are needed to connect the current

DTE DCE

CHAPTER 3: Configuration and Installation

loop side of the Converter to the current-loop device interface. For best results,

these 4 wires should be in twisted pairs.

To install the Converter in an active current-loop environment, you will need a

DB25 cable with at least 4 conductors. These conductors should be wired to the

appropriate DB25 pins as shown in Figure 3-2. Since the end of this cable connects

to the Converter, its gender should be opposite to that of the Converter’s

connector. When you connect this cable to your current-loop device, be sure the

signal paths correspond to those shown.

The RS-232 side of the Converter is designed to plug directly into the serial port

of your RS-232 device. You may use a straight-through RS-232 cable for connection

as well. Be sure to set the Converter’s DCE/DTE switch according to the

instructions in Section 3.1.

Figure 3-2. Connection to an Active Current-Loop Interface.

3.2.2 RS-232

ASSIVE

URRENT

OOP

UNNING

CTIVE

You may install the Converter into environments where an RS-232 device is

communicating with a passive current-loop device. In this case, you will need to

supply external DC power to the Converter on the current-loop interface side.

Figure 3-3 shows the appropriate pins/voltages for applying external DC power to

the Converter.

To install the Converter in a passive current-loop environment, you will need a

DB25 cable with at least 3 conductors plus shield. Wire the cable as shown in

Figure 3-3, paying attention to jumpers and signal paths. Since this end of the cable

connects to the Converter, its gender should be opposite that of the Converter’s

connector. When you connect this cable to your current-loop device, be sure the

signal paths correspond to those shown.

The RS-232 side of the Converter is designed to plug directly into the serial port

of your RS-232 device. You may use a straight-through RS-232 cable for connection

25 (R+)

23 (R-)

14 (T+)

19 (T-)

(T+)

(T-)

(R+)

(R-)

CONVERTER

Current Loop

Side

RS-232 Side

Active Current

Loop Device

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