Black Box RS0232 User's Manual
Contents
1. CTS CR4 RS 232 TO RS 422 RTS CTS OFF lt gt ON J2 DB25 PIN DATA CR7 RS 232 TO RS 422 DATA E FEMALE I gt S1 E RS 232 INTERFACE SET TO DTE Figure 3 2 Sample DIP Shunt Setting Figure 3 2 shows the DIP shunt settings used for an application like the one illustrated in Figure 3 3a NOTE The filled in rectangles in Figure 3 2 indicate the jumpers that contain a DIP shunt CAUTION Never set both ports the same the clocks will not operate correctly If two DTEs are connected through the Converter a modem eliminator is required in order to avoid setting both ports the same If two DCEs are connected together a cross over cable is required RS 232 lt gt RS 422 INTERFACE CONVERTER Figures 3 3a and 3 3b show some typical synchronous applications DIP SHUNT SETTINGS RS 232 RS 422 DTE DCE AT A 7 a GA WA A UA A RS 232 MODEM INTERFACE OR MODEM CONVERTER ELIMINATOR RS 232 TERMINAL DIP SHUNT SETTINGS RS 232 RS 422 DCE DTE INTERFACE RS 232 MODEM CONVERTER OR MODEM PC ELIMINATOR Figure 3 3 Synchronous Applications Applications involving asynchronous devices are also possible Figure 3 4 illustrates a popular asynchronous setup while Figure 3 5 shows the cabling involved DIP SHUNT SETTINGS DCE DTE DB25 STRAIGHT CABLE RS 232 RS 422 INTERFACE PC OR OTHER CONVERTER 19 FRAME DTE DEVICE GND RS 422 GROUND END DEVICE O2. 27 Clear to Send B CR8 RS 422 DSR LED 11 Data Mode A DSR 6 29 Data Mode B 13 Receiver Ready A 31 Receiver Ready B 5 Send Timing A 23 Send Timing B 8 Receive Timing A 26 Receive Timing B Ja CR9 RS 232 DSR LED E 12 Terminal Ready A DTR 20 30 Terminal Ready B 17 Terminal Timing A ETXC 24 r 35 Terminal Timing B Chassis or Frame Chassis 1 GND GND GND Optional Jumper 19 Signal GND Signal l GND 7 20 Receive Common 37 Transmit Common Note The optional jumper is removed factory default Figure 3 6 Signal Flow Diagram B I RS 232 lt gt RS 422 INTERFACE CONVERTER 4 Ground Strap and Interface Pinouts Signal grounds Pins 19 20 and 37 on the RS 422 interface and Pin 7 on the RS 232 interface are connected together but not connected to chassis ground Pin 1 However for applications requiring all grounds to be at a common reference point these pins can be connected to chassis ground by installing a jumper strap across W6 located at the rear of the printed circuit board between Jl and P refer to Figures 4 and 4 2 SECONDARY TRANSMITTED DATA 14 DCE TRANSMITTER SIGNAL ELEMENT TIMING 15 SECONDARY RECEIVED DATA 16 RECEIVER SIGNAL ELEMENT TIMING 17 18 SECONDARY REQUEST TO SEND 19 DATA TERMINAL READY 20 SIGNAL QUALITY DETECTOR 24 RING INDICATOR 29 DATA SIGNAL RATE SELECTOR 54 DTE TRANSMITTER SIGNAL ELE
3. DCE DIP shunts RS 422 port DTE DCE DIP shunts DIP switch to enable receiver termination Environment Storage Temperature 4 to 158 F 20 to 70 C Operating Temperature 32 to 122 F 0 to 50 C Power 115 VAC Supply 10 100 mA 230 VAC Supply 10 50 mA Size Standalone 2 3 H x 8 W x 11 9 D 5 8 x 20 3 x 30 2 cm Rackmount 1 2 H x 7 5 W x 11 4 D 3 1 x 19 1 x 29 cm Weight Standalone 2 Ib 1 kg Rackmount 10 oz 283 5 g RS 232 lt gt RS 422 INTERFACE CONVERTER 2 Introduction The RS 2320RS 422 Interface Converter provides bi directional synchronous or asynchronous conversion of all commonly used RS 232 and RS 422 signals The unit is designed to operate with one port configured as Data Terminal Equipment DTE and the other port as Data Communications Equipment DCE Operation is not recommended with both ports configured either DCE or both DTE when operating in synchronous mode The unit has two user selectable configurations one for connecting RS 422 modem equipment to RS 232 terminal equipment DCE to DTE and one for connecting RS 232 modem equipment to RS 422 terminal equipment DCE to DTE Both configurations allow bi directional data transfer Typical applications are shown in Figure 2 1 Things to consider when operating the converter DIP SHUNT SETTINGS RS 232 RS 422 DTE DCE MODEM INTERFACE ELIMINATOR CONVERTER one RS 422 COMPUTER COMPUTER DIP SHU
4. MENT TIMING 5 25 Figure 4 1 The RS 232 Interface SHIELD SIGNALING RATE INDICATOR SEND DATA A SEND TIMING A RECEIVE DATA A REQUEST TO SEND A RECEIVE TIMING A CLEAR TO SEND A 10 LOCAL LOOPBACK 11 DATA MODE A 12 TERMINAL READY A 13 RECEIVER READY A 14 REMOTE LOOPBACK 15 INCOMING CALL 16 SELECT FREQUENCY 17 TERMINAL TIMING A 18 TEST MODE 19 SIGNAL GROUND Figure 4 2 The RS 422 Interface A 1 PROTECTIVE GROUND 2 TRANSMITTED DATA 3 RECEIVED DATA 4 REQUEST TO SEND 5 CLEAR TO SEND DATA SET READY SIGNAL GROUND COMMON RETURN 7 RECEIVED LINE SIGNAL DETECTOR VOLTAGE 9 VOLTAGE 11 SECONDARY RECEIVED LINE SIGNAL 12 DETECTOR 13 SECONDARY CLEAR TO SEND RECEIVE COMMON og 21 B SEND DATA 99 B SEND TIMING 23 B RECEIVE DATA 24 B REQUEST TO SEND 25 B RECEIVE TIMING 26 B CLEAR TO SEND 27 TERMINAL IN SERVICE 28 B DATA MODE 29 B TERMINAL READY 30 B RECEIVER READY 31 SELECT STANDBY 32 SIGNAL QUALITY 33 NEW SIGNAL 34 B TERMINAL TIMING 35 STANDBY INDICATOR 36 SEND COMMON 37 00 JO OI RO 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. NT SETTINGS RS 422 RS 232 DTE DCE RS 422 INTERFACE MODEM CONVERTER RS 232 DIP SHUNT SETTINGS RS 232 RS 422 DTE DCE RS 232 INTERFACE RS 422 MODEM CONVERTER TERMINAL 4 WIRE CABLE DIP SHUNT SETTINGS RS 232 RS 422 6 R T DCE DTE 24 R T 4 T R 0 NTERFACE En PC CONVERTER INDUSTRIAL CONTROLLER Figure 2 1 Various Applications Showing DCE DTE Settings nu pp h RS 232 lt gt RS 422 INTERFACE CONVERTER 1 The Converter does not require special handshaking signals in order to operate 2 The Converter should always be configured the opposite of the equipment it s connected to if straight through cabling is used For example if you are connecting a modem a DCE device to the Converter configure the Converter s port connected to the modem as DTE 3 Some industrial controllers include RTS RTS CTS and CTS If necessary in most cases these can be jumpered together 4 According to EIA specifications RS 422 signals are A and B where mark B gt A in voltage and space A gt B in voltage Many manufacturers label their leads as and In most cases B and A is the scheme the Converter uses However some manufacturers have reversed this scheme Consult the manufacturer of your RS 422 equipment if you have problems Models There are three models of the RS 232 lt 5RS 422 Interface Converter e C456A R3 a standalone unit for 115 VAC
6. PTIONAL Figure 3 4 RS 422 Asynchronous Application RS 232 lt gt RS 422 INTERFACE CONVERTER THE RECEIVER TERMINATION SWITCH This switch is marked Sl on the printed circuit board diagram in Figures 3 1 and 3 2 This switch serves to terminate the receiver with pull up and pull down resistors in order to designate the receiver state and enable the Converter s anti streaming function Setting the switch to the ON position closes the switch setting the switch to OFF opens the switch 3 2 LEDs The RS 232 gt 2R5 422 Interface Converter is equipped with seven LEDs located on the front panel that indicate the status of INPUT signals The three LEDs on the right side of the front panel show conditions on the RS 232 interface DSR Data Set Ready CTS Clear To Send and Data The three LEDs on the left side of the panel show the same conditions on the RS 422 interface DSR Data Set Ready CTS Clear To Send and Data The LED labeled PWR located in the center of the front panel indicates when power is applied to the unit Figures 3 5 and 3 6 illustrate signal flow in both the DTE and DCE configurations NOTE Some LEDs may be lit when no input signal is present This is not a malfunction but a floating state condition at the input that causes the output of that driver to indicate a positive voltage condition RS 232 lt gt RS 422 INTERFACE CONVERTER RS 232 lt gt RS 422 Signal Flow Diagram Arrows ind
7. TT TT FEBRUARY 1998 IC456A R3 IC456C R3 IC456A R4 IC456C R4 BLACK BOX RS 232 5 RS 422 Interface Converter 232 lt 422 CTS DATA ATA p o 0 DSR CTSD 0 e o 0 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 Mailing address Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 INEORMA TON Web site www blackbox com E mail info blackbox com RS 232 lt gt RS 422 INTERFACE CONVERTER 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 approve
8. d 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 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 Reglement sur le brouillage radio lectrique publi bar Industrie Canada RS 232 lt gt RS 422 INTERFACE CONVERTER ot A OO N c 10 11 12 13 14 15 16 17 18 INSTRUCCIONES DE SEGURIDAD Normas Oficiales Mexicanas Electrical Safety Statement Todas las instrucciones de seguridad y operaci n deber n ser le das antes de que el aparato el ctrico sea operado Las instrucciones de seguridad y operaci n deber n ser guardadas para referencia futura Todas las advertencias en el aparato el ctrico y en sus instrucciones de operaci n deben ser respetadas Todas las instrucciones de operaci n y uso deben ser seguidas 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 El aparato el ctrico debe ser usado nicamente con carritos o pedestales que sean recomendados por el fabricante El aparato el ctrico debe ser montado a la pared o al techo s lo como sea recomenda
9. do por el fabricante Servicio El usuario no debe intentar dar servicio al equipo el ctrico mas all a lo descrito en las instrucciones de operaci n Todo otro servicio deber ser referido a personal de servicio calificado 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 sof 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 E 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 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 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 antena externa deber ser localizada lejos de las lineas de energia El cable de corriente deber se
10. icate the direction of signal flow RS 232 RS 422 Port is DTE Port is DCE RS 422 DATA LED 4 Send Data A TD 2 22 Send Data B CR7 RS 232 DATA LED i 6 Receive Data A RD 3 B P 24 Receive Data B CR5 RS 422 CTS LED 7 Request to Send A RTS 4 PA 25 Request to Send B CR4 RS 232 CTS LED 9 Clear to Send A CTS 5 B 27 Clear to Send B CR9 RS 232 DSR LED 11 Data Mode A DSR 6 29 Data Mode B 13 Receiver Ready A 31 Receiver Ready B 5 Send Timing A TXC 15 9 23 Send Timing B 8 Receive Timing A 26 Receive Timing B CR8 RS 422 DSR LED 12 Terminal Ready A DTR 20 30 Terminal Ready B 17 Terminal Timing A 35 Terminal Timing B Chassis 1 1 Chassis or Frame GND GND GND Optional Jumper 19 Signal GND Signal l GND 7 20 Receive Common 37 Transmit Common Note The optional jumper is removed factory default Figure 3 5 Signal Flow Diagram A o MA RS 232 lt gt RS 422 INTERFACE CONVERTER RS 232 lt gt RS 422 Signal Flow Diagram Arrows indicate the direction of signal flow RS 232 RS 422 Port is DCE A Port is DTE V d CS RS 232 DATA LED 4 Send Data A TD 2 B 22 Send Data B RS 422 DATA LED 6 Receive Data A RD 3 24 Receive Data B CR4 RS 232 CTS LED 7 Request to Send A RTS 4 B LA 25 Request to Send B CR5 RS 422 CTS LED 9 Clear to Send A CTS 5
11. ion is for connecting RS 422 DCE to RS 232 DTE The second configuration is for connecting RS 232 DCE to RS 422 DTE Refer to Table 3 1 for the DTE DCE settings appropriate to your application Table 3 1 DTE DCE DIP Shunt Settings to appear puta ped shunt to appear put a p shunt as as DTE XW1A XW2A XW3A DCE XW1B XW2B XW3B RS 232 lt gt RS 422 INTERFACE CONVERTER RACK POWER AC POWER RS 422 RS 232 CONNECTOR CONNECTOR CONNECTOR CONNECTOR JU 0000 O XWiA XW2A XW3A XW4A XW4B XW5A XW5B s DIP SHUNTS 10000 000 XW1B XW2B XW3B DIP SHUNTS S1 e gt OL SO Tol CR8 jf M CR9 m W V V y Uv V DSR CTS DATA POWER DSR CTS DATA RS 422 RS 232 INDICATORS INDICATORS Figure 3 1 Board Layout Showing Component Locations Dashed Lines show DTE DCE DIP Shunt Locations ooo o MA RS 232 lt gt RS 422 INTERFACE CONVERTER RS 422 INTERFACE SET TO DCE e LE DSR c CR9 RS 232 TO RS 422 DTR DSR LEHN O O O O O P DSR cj CR8 RS 422TORS 232DTR DSR WW ss ee P1 l I e e CTS CR5 RS 422 TO RS 232 RTS CTS EE i XWA I XW1B i E E DATA CR6 RS 422 TO RS 232 DATA ZEE DTE I XW2A XW2B i I I XW3B XW3A j FEMALE TC 5 7 ee POWER CR10 i cta E I I I l I I l l
12. operation e IC456AF R3 a standalone unit for 230 VAC operation e C456 C R3 a printed circuit card for rack mounted units The same RS 2325RS 422 printed circuit card is used for both 115 and 230 VAC applications An Interface Converter Rack RM060 is available through your sales representative This is a 19 inch rack capable of holding up to eight printed circuit cards The rack has its own power supply which is switch selectable between 115 and 230 VAC operation If you ordered the IC456A R4 or IC456C R4 you should have received cables with your RS 232 gt R5 422 Interface Converter RS 232 lt gt RS 422 INTERFACE CONVERTER 3 Installation To connect the Converter to your devices follow these steps 1 Attach the cable from the RS 422 device to the 37 pin female receptacle on the rear panel of the Converter 2 Attach the cable from the RS 232 device to the 25 pin female receptacle on the rear panel of the Converter 3 Plug the 4pin power cord into the receptacle on the rear panel of the case However don t plug the power module into an AC outlet at this time You can power up only after you have configured the Converter s DTE DCE DIP shunts Section 3 1 3 1 Configuration The Converter s RS 232 and RS 422 ports must each be set for DCE or DTE operation Configuration is accomplished through DIP shunts located inside the unit on the printed circuit board see Figures 3 1 and 3 2 One configurat
13. r 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 Objectos han ca do o l quido ha sido derramado dentro del aparato o El aparato ha sido expuesto a la lluvia o El aparato parece no operar normalmente o muestra un cambio en su desempeno O SR OY El aparato ha sido tirado o su cubierta ha sido da ada RS 232 lt gt RS 422 INTERFACE CONVERTER 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 RS 422 INTERFACE CONVERTER Contents Chapter Page Ie SD CCINCAUONS gaga eae ago oh ae Seu ne po a hog ete sees pape gare dened oaa nee eos 4 LM ivi m CPC 5 Ap ao Ed Ot E EE eV eia ra rS ERE NS S pim NNI eres 7 So COMPOUIANON pre EA sy uses oe 7 AS ee ee A ER ere eee eee eer 11 4 Ground Strap and Interface Pinouts RS 232 lt gt RS 422 INTERFACE CONVERTER 1 Specifications Speed 64 000 bps max Connectors RS 232 port DB25 female RS 422 port DB37 female Indicators 7 LEDs show status of RS 232 and RS 422 signals and indicate power ON RS 232 Port DSR CTS DATA RS 422 Port DSR CTS DATA Controls RS 232 port DTE
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