RS-232 ↔ Current Loop Interface Converter (232/CL-E)
Contents
1. 232 CL E 1 Specifications Operation Full or half duplex Interface RS 232 V 24 DCE DTE switch selectable Unipolar 20 60 mA passive up to 130 VDC Connectors 1 DB25 female 1 4 screw terminal block Switches 10 position DIP switch for RS 232 DTE or DCE configuration Indicators 2 LEDs RX and TX for Receive Data and Transmit Data Current Loop 130 VDC 250 VDC maximum passive only Power Input CL051A 115 VAC 60 Hz 12 watts CLO51AE 230 VAC 50 Hz 12 watts Output 18 VAC center tapped 8 watts Size CLO51A CLOSIAE 1 8 H x 5 5 W x 8 5 D 4 6 x 14 x 21 6 cm CL051C 7 5 L x 3 6 W 19 1 x 9 1 cm Weight CL051A CLO51AE 1 5 Ib 0 7 k g CLO51C 4 5 oz 127 6 g CAUTION Make sure you have the right power supply for your local power If not call Technical Support to get a replacement power supply RS 232 lt gt CURRENT LOOP INTERFACE CONVERTER 232 CL E 2 Introduction The RS 2325 Current Loop Interface Converter 232 CL E is a bidirectional self contained unit that enables the interconnection of a current loop interface with an RS 232 interface The switch selections allow half duplex or full duplex operation Operation from 65 to 130 VDC 60 ma and supports the passive mode only You can set the Interface Converter as Data Terminal Equipment DTE or Data Communications Equipment DCE via a switch Two LEDs monitor data flow Current Loop Device active CL051A De2. ND 20 DATA TERMINAL READY eee E 21 SIGNAL QUALITY DETECTOR aa 722 RING INDICATOR dm 23 DATA SIGNAL RATE SELECTOR SECONDARY RECEIVED LINE SIGNAL INDICATOR 12 24 DTE TRANSMITTER SIGNAL ELEMENT TIMING SECONDARY CLEAR TO SEND 13 25 Figure 3 2 RS 232 Interface gt D D mOHF RS 232 lt gt CURRENT LOOP INTERFACE CONVERTER 232 CL E 4 Current Loop Rack and Cards 4 1 Description The RM005 Rack can hold up to 16 CL051C printed circuit cards and fits in a standard 19 inch equipment rack The RM005 comes complete with its own built in AC power supply The operation of the CLO51C is the same as the CL0514A CURRENT LOOP INTERFACE CONNECTOR POWER CONNECTOR RS 232 INTERFACE CONNECTOR SWITCH C DTE DCE Figure 4 1 Component Layout WARNING Do not apply primary power until after you have properly configured the RMO05 power supply For 115 VAC 15 primary power Set 115 230 voltage selector switch to 115 and make sure the input fuse is rated at 1 A For 230 VAC 15 primary power The voltage selector switch must be set to 230 and the fuse must be rated 0 5 A Inside the fuseholder are two fuses Open the fuseholder by pressing down on the cover then release The fuse closest to the cover is a spare Select the correct fuses and place them in the Fuse Retaining Cover Discard the incorrect fuses MA RS 232 lt gt CURRENT LOOP INTERFACE CONVERTER 232 CL E 4 2 Specifi
3. TTE RR O RR RR RR RR RR RR ER SEPTEMBER 1998 CL051A CLO51AE CLO51C RM005 BLACK BOX RS 232 lt gt Current Loop Interface Converter 232 CL E CUSTOMER Order toll free in the U S Call 877 877 BBOX outside U S call 724 746 5500 SUPPORT FREE technical support 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 INFORMATION Mailing address Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com RS 232 lt gt CURRENT LOOP INTERFACE CONVERTER 232 CL E 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 B 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 resp
4. cations 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 19 1 cm Width 3 6 9 1 cm Rack Weight 19 6 Ib 8 9 kg without cards installed PC Card Weight 4 5 oz 128 g Rack Switches On Off Power Switch 115 230 VAC Selector Switch Rack Indicators None LOLA LL LL LL LL LLL M MOM NS S SS BIN LLAMA AN NS SS SNS Sa Figure 4 2 RM005 with CLO51C BLACK BOX Copyright 1998 Black Box Corporation All rights reserved 1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746
5. ctions 232 CLE Terminals Computer Equipment 1 T 2 1 3 R 4 R Connections Full Duplex Receive Receive Transmit Transmit Half Duplex Loop Jumper to 3 Jumper to 2 Loop 3 3 Indicators When the RX LED is flashing data is flowing from the RS 232 interface to the current loop interface When the TX LED is flashing data is flowing from the current loop interface to the RS 232 interface If TX is steadily lit no current is flowing on the receive pair of wires Check the current loop wiring RS 232 lt gt CURRENT LOOP INTERFACE CONVERTER 232 CL E 3 4 RS 232 Interface The RS 232 interface is described in Table 3 4 and Figure 3 2 Table 3 4 RS 232 Interface Pinning Circuit Description Direction Protective ground 2 Transmit Data To DCE 3 Receive Data From DCE 4 Request to Send To DCE 5 6 Data Set Ready From DCE 7 BA BB CA CC AB Signal Ground Common Return 20 CD Data Terminal Ready To DCE RS 232 Interface Female SIGNAL PIN PIN SIGNAL DESTINATION NUMBER NUMBER DESTINATION PROTECTIVE GROUND 1 TRANSMITTED DATA 2 RECEIVED DATA 3 REQUEST TO SEND 4 CLEAR TO SEND 5 DATASET READY 6 SIGNAL GROUND COMMON RETURN 7 RECEIVED LINE SIGNAL DETECTOR 8 14 SECONDARY TRANSMITTED DATA 15 DCE TRANSMITTER SIGNAL ELEMENT TIMING 16 SECONDARY RECEIVED DATA 17 RECEIVER SIGNAL ELEMENT TIMING 18 19 SECONDARY REQUEST TO SE
6. ctor Configuration DCE DTE The Interface Converter comes from the factory configured as a DTE device The switches are set as shown in Table 3 1 Table 3 1 DIP Switch C Settings for DTE Factory Configuration Switch Setting Description Not Used CLOSED W SW3 OPEN Data Out is on Pin 2 OPEN SW2 and SW3 are ALWAYS in opposite positions CLOSED W SW5 OPEN Data IN is on Pin 3 OPEN SW4 and SW5 are ALWAYS in opposite positions CLOSED Places High on Pin 4 RTS OPEN Pin 5 CTS not connected CLOSED Places High on Pin 20 DTR OPEN Pin 6 DSR not connected Not Used When the device is configured as a DCE all switches will normally be switched to the opposite of the factory setting MA RS 232 lt gt CURRENT LOOP INTERFACE CONVERTER 232 CL E Table 3 2 DIP Switch C Settings for DCE Switch Setting Description W6 S OPEN Pin 4 RTS not connected SW7 CLOSED Ties Pin 5 CTS to Pin 20 DTR Removes High on Pin 20 DTR If system does not use DTR raise CTS by CLOSING both SW7 and SW8 SW9 CLOSED Ties High Pin 6 DSR SW10 Not Used 3 2 Current Loop Interface The current loop connections are shown in Table 3 3 The current loop connections are accomplished by connecting the current loop cable to the closed entry terminal block Unless very fine stranded wire cable is used wire tinning is not required RS 232 lt gt CURRENT LOOP INTERFACE CONVERTER 232 CL E Table 3 3 Current Loop Cable Conne
7. intentar dar servicio al equipo el ctrico m s all a lo descrito en las instrucciones de operaci n Todo otro servicio deber ser referido a personal de servicio calificado 9 El aparato el ctrico debe ser situado de tal manera que su posici n no interfiera su uso La colocaci n del aparato el ctrico sobre una cama sofa alfombra o superficie similar puede bloquea la ventilaci n no se debe colocar en libreros o gabinetes que impidan el flujo de aire por los orificios de ventilaci n 10 El equipo el ctrico deber ser situado fuera del alcance de fuentes de calor como radiadores registros de calor estufas u otros aparatos incluyendo amplificadores que producen calor 1l El aparato el ctrico deber ser connectado a una fuente de poder s lo del tipo descrito en el instructivo de operaci n o como se indique en el aparato B AO o 4 12 13 14 15 16 17 18 RS 232 lt gt CURRENT LOOP INTERFACE CONVERTER 232 CL E Precauci n debe ser tomada de tal manera que la tierra fisica y la polarizaci n del equipo no sea eliminada 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 atenci n a los contactos y recept culos donde salen del aparato El equipo el ctrico debe ser limpiado nicamente de acuerdo a las recomendaciones del fabricante En caso de existir una a
8. ntena externa deber ser localizada lejos de las lineas de energia El cable de corriente deber ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilaci n Servicio por personal calificado deber ser provisto cuando A El cable de poder o el contacto ha sido da ado u B Objectos han ca do o l quido 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 desempe o o E El aparato ha sido tirado o su cubierta ha sido da ada RS 232 lt gt CURRENT LOOP INTERFACE CONVERTER 232 CL E TRADEMARKS USED IN THIS MANUAL Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners RS 232 lt gt CURRENT LOOP INTERFACE CONVERTER 232 CL E Contents Chapter Page ES UH Aa 6 2 IOUROCUCHON sepas ones oe ete a AE RSEN a eee 7 3 Installation and COTE AO dci a diode eed eons heeds 8 3 1 Switch C RS 232 Connector Configuration 9 3 2 Current Loop Interlace ite wore snes eek bide pete Sandee ded 10 opi MP 11 o A kd RES We RIP co PES 13 4 Current Loop Rack and Cards canasto postnatal 13 dd Desert SE ose O UE RENE E 13 4 2 Specifications for RMOQS acentos ae a ss 14 RS 232 lt gt CURRENT LOOP INTERFACE CONVERTER
9. onsible 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 pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de la classe A prescrites dans le R glement sur le brouillage radio lectrique publi par Industrie Canada RS 232 lt gt CURRENT LOOP INTERFACE CONVERTER 232 CL E NORMAS OFICIALES MEXICANAS NOM ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1 Todas las instrucciones de seguridad y operacion deberan ser leidas antes de que el aparato el ctrico sea operado 2 Las instrucciones de seguridad y operacion deberan ser guardadas para referencia futura 3 Todas las advertencias en el aparato el ctrico y en sus instrucciones de operacion deben ser respetadas 4 Todas las instrucciones de operaci n y uso deben ser seguidas 5 El aparato el ctrico no deber ser usado cerca del agua por ejemplo cerca de la tina de bano lavabo s tano mojado o cerca de una alberca etc 6 El aparato el ctrico debe ser usado nicamente con carritos o pedestales que sean recomendados por el fabricante 7 Fl aparato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante 8 Servicio El usuario no debe
10. vice Using RS 232 Interface Figure 2 1 Connecting a current loop interface and an RS 232 interface RS 232 lt gt CURRENT LOOP INTERFACE CONVERTER 232 CL E 3 Installation and Configuration Follow the steps listed below to install your Interface Converter 1 Remove the screw located at the center of the bottom cover and remove the top cover 2 Make sure that switch SWC is set to the desired position as explained in Section 3 1 3 Lift the back panel from its guide and insert the power supply receptacle with the lip up into the 4 prong plug near WI see Figure 3 1 4 Connect the current loop wires to the 4 screw terminal block near C5 see Section 3 2 for terminal descriptions 5 Insert the back panel into its guide making sure the power supply cable and current loop cable exit through the holes provided for them 6 Replace the top cover on the unit and secure with the screw 7 Plug the power supply into an AC outlet The unit is now ready for operation CURRENT LOOP INTERFACE CONNECTOR LEDs RDE POWER CONNECTOR DTE DCE RS 232 INTERFACE CONNECTOR SWITCH C DTE DCE Figure 3 1 Board Layout Hu A J 1 w RS 232 lt gt CURRENT LOOP INTERFACE CONVERTER 232 CL E NOTE The Converter will operate at 130 volts DC 60 ma as shipped from the factory For 20 ma operation remove the 82 ohm resistor that is in parallel to R and R see Figure 3 1 3 1 Switch C RS 232 Conne
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