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RS-232 ´Current Loop
Interface Converter
CUSTOMER
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX
SUPPORT
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
INFORMATION
Web site: www.blackbox.com • E-mail: info@blackbox.com
(232/CL-E)
SEPTEMBER 1998
2 3 2 / C L - E
T X
R X
CL050A
CL050A-R2
CL050C
CL050AE
RM005
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Table of Contents
Related Manuals for Black Box 232/CL-E
Summary of Contents for Black Box 232/CL-E
- Page 1 Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX SUPPORT 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 INFORMATION Web site: www.blackbox.com • E-mail: info@blackbox.com...
- Page 2 FCC STATEMENT FEDERAL COMMUNICATIONS COMMISSION CANADIAN DEPARTMENT OF COMMUNICATIONS 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...
- Page 3 INSTRUCCIONES DE SEGURIDAD 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.
- Page 4 INSTRUCCIONES DE SEGURIDAD 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. 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada.
- Page 5 RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER TRADEMARKS All applied-for and registered trademarks are the property of their respective owners.
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Page 6: Table Of Contents
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER CONTENTS 1. Specifications ..........8 2. -
Page 7: Specifications
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER 1. Specifications Connectors — RS-232/CCITT V.24: DB25 (female) Current Loop: 4 screw terminals Indicators — (2) LEDs indicating RS-232 port activity: RX for Receive Data from an RS-232 external device TX for Transmit Data to an RS-232 external device Switches —... -
Page 8: Introduction
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER 2. Introduction The RS-232 ↔ Current Loop Interface the CL050 will not supply loop current, Converter (CL050) is a bidirectional but it will operate with 20, 30, or 60 ma self-contained unit that enables the unipolar current at up to 30 VDC. -
Page 9: Installation
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER 3. Installation 7. Insert the back panel into its 1. Remove the screw located at the guide, making sure the power- center of the bottom cover. supply cable and current-loop 2. Remove the top cover. cable exit through the holes provided for them. -
Page 10: The Current-Loop Interface
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER 4. The Current-Loop Interface 4.1 Testing for Other Active Devices 4.1.1 LED T on the Current Loop (1) Unplug the CL050 from the AC outlet. You must test for an active device on the current loop if you plan to have the (2) Set the SWA switch to full duplex, CL050 supply loop current. -
Page 11: Voltmeter Test
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER Terminals 1 (T+) 2 (T-) 3 (R+) 4 (R-) 4-Wire Full-Duplex + Receive - Receive + Transmit - Transmit 2-Wire Half-Duplex + Loop Jumper to Jumper to - Loop Passive 3 (R+) 2 (T-) 2-Wire Half-Duplex + Loop - Loop... -
Page 12: 2-Wire Current Loop
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER 4.2.2 2-W URRENT Connections to a 2-wire half-duplex multipoint current loop depend on whether the CL050 is used as an active or passive unit. Note the connections in Table 1. The connections are also shown in Figures 4-5, 4-6, and 4-7. - Page 13 RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER Figure 4-3. 4-Wire Point-to-Point. Passive Active Passive Passive Figure 4-4. 4-Wire Multipoint.
- Page 14 RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER Passive CL050 (set to half-duplex active) Figure 4-5. 2-Wire Point-to-Point (half-duplex). Passive Jumper Active CL050 (Passive) Passive Figure 4-6. 2-Wire Half-Duplex Multipoint (CL050 passive).
- Page 15 RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER Passive CL050 Passive (active) Passive Figure 4-7. 2-Wire Half-Duplex Multipoint (CL050 active).
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Page 16: Switch Swa
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER Switch SWA Switch SWA controls the Current Loop Configuration. The CL050 is shipped with the SWA in a “Full-Duplex, Passive” configuration. Note: 0 indicates “OPEN” and 1 indicates “CLOSED.” SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 SW9 SW10 Loop Configuration Full-Duplex, Passive Full-Duplex, Active... -
Page 17: The Rs-232C Interface
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER 5. The RS-232C Interface 5.1 The RS-232C Interface Pinout Circuit Description Direction Protective Ground Transmit Data To DCE Receive Data From DCE Request to Send To DCE Clear to Send From DCE Data Set Ready From DCE Signal Ground Data Terminal Ready... -
Page 18: Switch Swc
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER 5.2 Switch SWC Switch SWC controls the RS-232 Connector Configuration (DCE/DTE). Note: “OPEN” indicates Off and “CLOSED” indicates On. 5.2.1 DCE The CL050 default configuration is DCE. The 10-position DIP switch is set as follows: Not Used OPEN... -
Page 19: Operations And Troubleshooting
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER 6. Operations and Troubleshooting 6.1 Indicators RX LED TX LED On Continuously: Error. Call On Continuously: Indicates Technical Support. (1) receive current loop not Off: No data being received by the RS- attached; (2) no current flowing; 232 port. -
Page 20: Self Test
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER (6) On the CL050, connect a wire from 6.2 Self Test T+ to R+. Follow these instructions to test the (7) Plug the CL050 into an AC outlet. internal circuitry of the CL050: (8) Set the DTE device to full-duplex. (1) Unplug the CL050 from AC outlet. -
Page 21: Current Loop Rack And Cards
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER 7. Current Loop Rack and Cards voltage selector switch to 7.1 Description 115 and make sure the input fuse is rated at 1 A. The RM005 Rack can hold up to 16 CL050C printed circuit cards and •... -
Page 22: Specifications For Rm005
RS-232 ↔ CURRENT LOOP INTERFACE CONVERTER 7.2 Specifications for RM005 Power—115/230 VAC, 60/50 Hz, switch-selectable Rack Size — Overall Width: 19" (48.3 cm) Inside Width: 17" (43.2 cm) Depth: 10.5" (26.7 cm) Height: 5.25" (13.3 cm) PC Card Size — Length: 7.5"... - Page 23 © Copyright 1998. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...