Black Box DB9F/RJ-11 User's Manual
Contents
1. CHAPTER 3 Configuration S2 1 Carrier Control Method The setting for S2 1 determines whether the carrier is Constantly On or Controlled by RTS This allows for operation in switched carrier multipoint and or hardware handshaking applications S2 1 Set ng On Controlled by RTS Off Constantly On NOTE When in Controlled mode RTS must go negative to turn off the Transmitter and enable the Receiver S2 2 RTS CTS Delay The setting for switch S222 determines the amount of delay between the time the Converter sees RTS and when it sends CTS NOTE The RTS CTS Delay setting should be based upon transmission timing S2 2 Set ng On 8 msec Off No delay RS 232 485 CONVERTER S2 3 and S2 4 Transmit Off Impedance Switches S2 3 and 82 4 are set together to determine whether the receiving device sees the impedance of the Converter s transmitter as being high or intermediate when the transmitter is turned off The intermediate setting is useful in half duplex environments where the receiving device does not respond well to the high setting S2 3 S2 4 Setting On On Intermediate impedance Off Off High impedance 3 2 Typical Applications The Converter is commonly used in five types of applications e 4wire full duplex point to point 4wire halfduplex point to point 2 wire halfduplex point to point e 4wire multipoint 2 wire multipoint CHAPTER 3 Configuration2. The switch settings generally needed to configure the Converter for these applications are shown in Table 3 3 NOTE Do not change switch settings until you have carefully read Section 3 1 Table 3 3 Typical Converter Applications Switch Point to Point Multipoint Settings 4WHDX 2W 4w 2W S1 1 Rcv impedance ON ON Master ON Termination Slaves OFF Last Slave ON S1 2 2 wire 4 wire ON OFF S1 3 2 wire 4 wire ON OFF S1 4 Echo OFF S2 1 Carrier Control Master OFF ON Slaves ON S2 2 RTS CTS Delay ON ON S2 3 Xmt Off imp OFF OFF OFF OFF S2 4 Xmt Off imp OFF OFF OFF OFF RS 232 485 CONVERTER 4 Installation Once the Converter is properly configured it is ready to connect to your system This section tells you how to properly connect the Converter to the twisted pair and EIA TIA 574 interfaces and how to operate the Converter 4 1 Twisted Pair Connection The Converter supports 2 wire or 4 wire communi cation between two or more EIA TIA 574 devices at data rates up to 115 2 Kbps There is one essential requirement for installing the Converter To function properly the Converter needs one or two twisted pairs of metallic wire These pairs must be unconditioned dry metallic wire between 19 and 26 AWG solid copper core unshielded the higher number gauges may limit distance Standard dialup telephone circuits that run through signal equalization equipment are not acceptable CHA
3. BLACK BOX MARCH 1998 IC620A F 1C623A M IC620A M 1C624A F 1C623A F IC624A M RS 232 485 Converter 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 info blackbox com FCC AND IC STATEMEN 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 communi cation 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
4. RCV 2 4 XMT XMT 3 5 RCV XMT 4 2 XMT RCV 5 3 XMT GND 6 1 GND Connection to ground is optional Figure 4 10 RJ 11 Cable 4 wire Signal Pin Pin Signal GND 2 7 GND RCV 3 5 XMT XMT 4 6 RCV XMT 5 3 RCV RCV 6 4 XMT GND 7 2 GND Figure 4 11 RJ 45 Cable 4 wire CHAPTER 3 Configuration Signal Pin Pin Signal XMT 3 3 XMT XMT 4 4 XMT Figure 4 12 RJ 11 Cable 2 wire Signal Pin Pin Signal XMT 4 4 XMT XMT 5 5 XMT Figure 4 13 RJ 45 Cable 2 wire 4 2 Wiring for Multipoint Circuits The Converter supports multipoint applications using a daisychain topology This topology requires special wiring as well as specific DIP switch settings for master and slave units Refer to Table 3 3 for multipoint DIP switch settings RS 232 485 CONVERTER DAISYCHAIN TOPOLOGY Using a daisychain topology you may connect several Converters together in a master slave arrangement Maximum distance between the units will vary based upon the number of drops data rate wire gauge etc Call Technical Support for specific distance estimates Figure 4 14 shows how to wire the two pair cables properly for a Converter daisychain topology XMTA XMTB M M 5 RcvA RCVB RCVA RCVB RCVB MASTER SLAVE 1 SLAVE 2 SLAVE 3 SLAVE RCVB RCVA XMTA XMTB XMTA XMTB XMTB XM
5. explanation Appendix EIA TIA 574 Interface DB9 Signal Direction 1 CD Output 2 RD Output 3 TD Input 4 DTR Input 5 SG FG 6 DSR Output 7 RTS Input 8 CTS Output 9 Optional 6 12 VDC BLACK BOX Copyright 1998 Black Box Corporation All rights reserved 1000 Park Drive Lawrence PA 15055 1018 e 724 746 5500 e Fax 724 746 0746
6. 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 classe A prescrites dans le Reglement sur le brouillage radio lectrique publi par Industrie Canada This unit is 6 certified 32 485 CONVERTER I NORMAS OFICIALES MEXICANAS NOM ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 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 recomendado por el fabricante Servicio El usuario no debe intentar dar servicio al equipo el ctrico m s all a lo desc
7. HAPTER 3 Configuration Switch 2 0000 Figure 3 2 Top of the Converter s daughterboard showing the location of DIP switch S2 RS 232 485 CONVERTER To access the Converter s internal PC boards insert a small flat blade screwdriver between the connector and the lip of the case and twist gently as shown in Figure 3 3 Figure 3 3 Opening the Converter s plastic case with a small screwdriver CHAPTER 3 Configuration Both DIP switch S1 and S2 are marked with individual switch numbers 1 through 4 Use these numbers and the ON designation to orient the switch properly see Figure 3 4 Use a small screwdriver or similar instrument to set each individual switch Figure 3 4 Close up of DIP switches S1 and S2 showing ON OFF orientation RS 232 485 CONVERTER 3 1 1 DIP SWITCH 51 SETTINGS DIP switch S1 is used to configure receive impedance termination 2 wire 4 wire operation and echo enable disable Table 3 1 shows the factory default settings for switch S1 Following Table 3 1 is a detailed description of each switch Table 3 1 Switch S1 Summary Table factory defaults in bold Position Function OFF Position ON Position S1 1 RCV impedance termination 16 K ohms typ 120 ohms S1 2 2 wire 4 wire 4 wire 2 wire S1 3 2 wire 4 wire 4 wire 2 wire S1 4 Echo Mode Echo OFF Echo ON Switches S1 2 and S1 3 should be switched simultaneously CHAP
8. PTER 3 Configuration For your convenience the Converter is available with several different twisted pair interfaces RJ 11 jack RJ 45 jack and terminal blocks with strain relief The Converter is also available with DB25 male or female connectors 4 1 1 TwisrED PAIR CONNECTIONS USING TERMINAL BLOCKs If your application requires you to connect one or two pairs of bare wires to the Converter you will need to open the case to access the terminal blocks The following instructions tell you how to open the case connect the bare wires to the terminal blocks and fasten the strain relief collar in place so the wires won t pull loose 1 You should already have the case open for the configuration procedure If not see Section 3 1 2 Strip the outer insulation from the twisted pair s about one inch from the end Figure 4 1 Stripping the outer insulation RS 232 485 CONVERTER 3 Strip the insulation on each of the twisted pair wires about 18 inch Figure 4 2 Stripping the insulation on the twisted pair wires 4 In a two pair circuit connect one pair of wires to XMT and XMT transmit positive and negative on the terminal block making careful note of which color is positive and which color is negative 5 Connect the other pair of wires to RCV and RCV receive positive and negative on the terminal block again making careful note of which color is positive and which color is negative Ultimately you will wa
9. TA XMTB i 1 xS Figure 4 14 Daisychain wiring for the Converter host and slaves CHAPTER 3 Configuration 4 3 Connection to the EIA TIA 574 Interface The Converter is designed to plug directly into the DB9 serial port of an EIA TIA 574 DTE device PC laptop host If you must use a cable to connect the Converter to the DTE device make sure that it is a straight through cable of the shortest possible length we recommend 6 ft 1 8 m or less The DB9 connector on the Converter is wired according to the EIA TIA 574 Standard as shown in Figure 4 15 DB9 Signal 1 CD 2 RD 3 TD 4 DTR 5 SG FG 6 DSR 7 RTS 8 CTS 9 Optional 6 12 VDC Figure 4 15 EIA TIA 574 Standard NOTE The Converter is configured as a DCE and is therefore designed to connect to a DTE If you need to connect the Converter to another DCE device call technical support for details about the proper crossover cable RS 232 485 CONVERTER 4 4 Operating the Converter Once the Converter is properly installed it should operate transparently as if it were a standard cable connection Operating power is derived from the RS 232 data and control signals there is no ON OFF switch All data signals from the RS 232 and RS 485 interfaces are passed straight through One hardware flow control signal is also passed in each direction see the last bullet point in Section 2 2 for an
10. TER 3 Configuration S1 1 Receive Impedance Termination The setting for switch S1 1 selects the impedance of the input receiver You may select either a low impedance of 120 ohms or a high impedance of 16 K ohms By selecting the proper impedance for each drop you can have up to 50 receivers in one application S1 1 Setting On Low 120 ohms Off High 16 K ohms typical S1 2 and S1 3 2 wire 4 wire Modes Switches S1 2 and S1 3 are set together to determine whether the Converter is in 2 wire or 4 wire operating mode NOTE 2 wire mode is half duplex only SI S1 3 Set ng On On 2 wire mode Off Off 4 wire mode RS 232 485 CONVERTER S1 4 Echo Mode The setting for switch S1 4 determines whether the Converter echoes data back to the transmitting device half duplex mode only S1 4 Setting On Echo On Off Echo Off 3 1 2 DIP SwrrcH S2 SETTINGS DIP switch S2 is used to configure carrier control RTS CTS delay and communication protocol Table 3 2 shows the factory default settings for switch S2 Following Table 3 2 is a detailed description of each individual switch Table 3 2 Switch S2 Summary Table factory defaults in bold Position Function OFF Position ON Position S2 1 Carrier Control Constantly ON ON Position S2 2 RTS CTS Delay No Delay 8 msec XMT Off impedance High Intermediate XMT Off impedance High Intermediate Switches S2 3 and S2 4 should be switched simultaneously
11. TIA 574 Interface 35 RS 232 485 CONVERTER 1 Specifications Transmission Format Asynchronous Data Rate Up to 115 200 bps Range Up to 9 miles 14 4 km Serial Interface EIA TIA 574 standard RS 232 DCE Connectors C620A F 1 DB9 female 1 5 position terminal block 1C620A M 1 DB9 male 1 5 position terminal block 1C623A F 1 DB9 female 1 RJ 11 female 1C623A M 1 DB9 male 1 RJ 11 female 1C624A F 1 DB9 female 1 RJ 45 female 1C624A M 1 DB9 male 1 RJ 45 female Transmit Line 2 wire or 4 wire unconditioned unshielded solid core twisted pair Transmit Mode 4 wire full or half duplex 2 wire half duplex Control Signals DSR turns ON immediately after the terminal raises DTR DCD turns ON after recognizing the receive signal from the line CHAPTER 1 Specifications CTS turns ON after the terminal raises RTS RTS CTS Delay 8 msec or no delay Carrier The carrier is switch selected either continuous operation or switched operation controlled by RTS Surge Protection 600 W power dissipation at 1 ms Temperature 32 to 122 F 0 to 50 C Humidity 5 to 95 noncondensing Maximum Altitude 10 000 ft 304 8 m MTBF 209 384 hours Power Draws operating power from EIA TIA 574 data and control signals no AC power or batteries required If necessary 6 to 12 VDC can be applied to pin 9 of the EIA TIA 574 interfa
12. ce Size 2 5 H x 1 2 W x 0 75 D 6 4x 3 1 x 1 9 cm Shipping Weight 1 Ib 0 5 kg RS 232 485 CONVERTER 2 Introduction 2 1 Description The RS 232 485 Converter IC620A is an ultra miniature interface converter Requiring no AC power or batteries for operation the Converter supports asynchronous communication up to 115 2 Kbps over one or two unconditioned twisted pairs Distances up to 15 miles 24 km are attainable at lower data rates 1 2 Kbps 19 AWG twisted pair The Converter can handle up to 31 terminal drops in a multipoint polling environment For RS 485 applications that require hardware handshaking the Converter passes one control signal in each direction see the last bullet point in Section 2 2 for an explanation The Converter may be configured for high or low impedance and the carrier may be set to constantly on or controlled by RTS The unit can operate with or without echo RTS CTS delay may be set for no delay or 8 ms delay There are three options for twisted pair connection terminal blocks with strain relief RJ 11 or RJ 45 Silicon Avalanche Diodes provide 600 watts per wire of protection against harmful data line transient surges CHAPTER 2 Introduction Six models are available DB9F Term IC620A F DB9M Term 1C620A M DBOF RJ 11 IC623A F e DB9M RJ 11 IC623A M DBOF RJ 45 1C624A F e DBOF RJ 45 1C624A M 2 2 Features Ope
13. gh it into the slot in the bottom half of the modem case and seat it into the recess in the case If the telephone wire is too thin to be held by the strain relief assembly you will need to order a different sized strain relief Call for technical support Figure 4 7 Completing the installation of the strain relief assembly RS 232 485 CONVERTER 10 Bend the top of the case as necessary to place it over the strain relief assembly Do not snap the case together yet Figure 4 8 Closing the case 11 Insert one captive screw through a saddle washer and then insert the captive screw with the washer on it through the hole in the DB25 end of the case Snap that side of the case closed Repeat the process for the other side This completes the cable installation CHAPTER 3 Configuration 4 1 2 TWISTED PAIR CONNECTION USING RJ 11 or RJ 45 The RJ 11 and RJ 45 connectors on the Converter s twisted pair interface are pre wired for a standard telco wiring environment The signal pin relationships are shown in Figure 4 9 RII Signal RJ 45 Signal 1 GND 1 _N C 2 RCV 2 GND 3 XMT 3 RCV 4 XMT 4 XMT 5 RCV 5 XMT 6 GND 6 RCV 7 GND 8 N C Connection to ground is optional Figure 4 9 Signal Pin Relationships RS 232 485 CONVERTER Signal Pin Pin Signal GND 1 6 GND
14. nt to construct a two pair crossover cable that makes a connection with the two Converters as shown in Figure 4 3 CHAPTER 3 Configuration XMT RCV XMT _ RCV G To Shield Optional G RCV4 XMT RCV XMT Figure 4 3 Two Pair Crossover Cable 6 In a single pair circuit use only the transmit XMT pair as shown in Figure 4 4 XMT XMT XMT XMT Figure 4 4 Transmit Pair NOTE If there is a shield around the twisted pair cable it may be connected to G on the terminal block To avoid ground loops we recommend connecting the shield at the computer end only A ground wire is not necessary for proper operation of the Converter 7 When you finish connecting the wires to the terminal block the assembly should resemble Figure 4 5 RS 232 485 CONVERTER Figure 4 5 Wires connected to the terminal block 8 Place the two halves of the strain relief assembly on either side of the telephone wire and press together very lightly Slide the assembly so that it is about two inches from the terminal posts and press together firmly If your cable diameter is too small or too large for our strain relief call for technical support Figure 4 6 Installing the strain relief assembly CHAPTER 3 Configuration 9 Insert the strain relief assembly with the wire going throu
15. rates asynchronously point to point or multipoint over 2 or 4 wires e Up to 31 multipoint device drops in a polling environment Data rates up to 115 2 Kbps Passes transmit and receive data one control signal in each direction No AC power or batteries required Variable high low impedance settings Able to operate with or without echo Carrier can be set as constantly on or controlled by RTS RS 232 485 CONVERTER Twisted pair connection via strain relief RJ 11 or RJ 45 Silicon Avalanche Diode surge protection e A Transmitter On signal received at the RS 485 RCV connection will cause DCD output at the RS 232 connector to assert High CHAPTER 3 Configuration 3 Configuration The Converter is configured using two internal 4 position DIP switches This section shows how to access the DIP switches provides an overview of the factory default settings and describes all possible configuration options For instructions on how to configure the Converter for specific applications see Section 3 2 3 1 Accessing the DIP Switches The Converter has a main PC board and a daughter board DIP switch S1 is located on the underside of the main PC board see Figure 3 1 DIP switch S2 is located on the top of the daughterboard see Figure 3 2 RS 232 485 CONVERTER Switch S1 Figure 3 1 Underside of the Converter s main PC board showing the location of DIP switch S1 C
16. riodo de tiempo 17 Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilaci n 18 Servicio por personal calificado deber ser provisto cuando A Elcable de poder o el contacto ha sido danado 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 Elaparato parece no operar normalmente o muestra un cambio en su desempeno o E Elaparato ha sido tirado o su cubierta ha sido danada RS 232 485 CONVERTER TRADEMARKS Product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby acknowledged TABLE OF CONTENTS CONTENTS 1 Specifications 0 0 0 0 0 eee eee 6 2 Introduction 1 0 0 eee 8 2 1 srno 8 2 2 Reatures 2c D est a BS Bs 9 3 Configuration aA S 11 3 1 Accessing the DIP Switches 11 3 1 1 DIP Switch 51 Settings 16 3 1 2 DIP Switch S2 Settings 18 3 2 Typical Applications 20 4 Installation 24 4 1 Twisted Pair Connection 22 4 1 1 Twisted Pair Connections Using Terminal Blocks 23 4 1 2 Twisted Pair Connection Using RJ 11 or RJ45 29 4 2 Wiring for Multipoint Circuits 31 4 3 Connection to the EIA TIA 574 Interface argo 4 4 Operating the Converter 34 Appendix EJA
17. rito 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 STATEMENT 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 11 El aparato el ctrico debera 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 12 Precauci n debe ser tomada de tal manera que la tierra fisica y la polarizaci n 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 atenci n a los contactos y recept culos donde salen del aparato 14 El equipo el ctrico debe ser limpiado nicamente de acuerdo a las recomendaciones del fabricante 15 En caso de existir una antena externa deber ser localizada lejos de las lineas de energia 16 El cable de corriente deber ser desconectado del cuando el equipo no sea usado por un largo pe
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