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ASYNC RS-232 TO 2-WIRE RS-485 CONVERTER

5. Operation

Once the Converter is properly installed, it should
operate transparently—as if it were a standard cable
connection. The Converter derives operating power
from the RS-232 data and control signals; there is no
ON/OFF switch.

Summary of Contents for IC520A-F

Page 1: ...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 ...

Page 2: ...idential 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 emiss...

Page 3: ...a 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 op...

Page 4: ...ención 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 ...

Page 5: ...4 ASYNC RS 232 TO 2 WIRE RS 485 CONVERTER TRADEMARKS The trademarks mentioned in this manual are the sole property of their owners ...

Page 6: ...n 8 2 2 Features 9 3 Configuration 10 4 Installation 11 4 1 Connecting the EIA 232 Interface 11 4 2 Connection to the RS 485 Interface 12 4 2 1 Connecting via the RJ 45 Connector 12 4 2 2 Connecting via the Terminal Block 14 5 Operation 19 Appendix RS 232 Pin Configuration and DCE Connection Wiring 20 ...

Page 7: ...ale 1 4 screw terminal block IC520A M 1 DB25 male 1 4 screw terminal block IC521A F 1 DB25 female 1 RJ 45 female IC521A M 1 DB25 male 1 RJ 45 female Interface RS 232 is DCE Transmit Line 2 wire unconditioned twisted pair 24 AWG solid unshielded twisted pair CAT 5 Transmit Mode 2 wire half duplex Surge Protection 600 W power dissipation at 1 ms Temperature 32 to 122 F 0 to 50 C Humidity 5 to 95 non...

Page 8: ...SYNC RS 232 TO 2 WIRE RS 485 CONVERTER Power Draws operating power from RS 232 data and control signals no AC power or batteries required Size 0 7 H x 2 1 W x 2 7 D 1 7 x 5 3 x 6 9 cm Weight 0 1 lb 0 06 kg ...

Page 9: ...ed twisted pair in half duplex mode The line is automatically turned around from receiving to transmitting upon the beginning of receiving of RS 232 data No RS 232 control signal is needed to turn around the line The Converter is equipped with either male or female DB25 connectors for RS 232 For the twisted pair connection you can choose either a 4 wire terminal block or an RJ 45 female connector ...

Page 10: ...2 Features Operates asynchronously half duplex point to point over two wires Data rates to 115 2 kbps No AC power or batteries are required Compact size Twisted pair connection via screw terminals or RJ 45 Silicon Avalance Diode surge protection ...

Page 11: ...guration It s factory configured as Data Communication Equipment DCE It connects to Data Terminal Equipment DTE via its DB25 RS 232 port Figure 3 1 shows the RS 232 DB25 connector and terminal blocks on the printed circuit board Figure 3 1 Top View of the Converter s Circuit Board RCV G XMT ...

Page 12: ...E It connects directly to DTE such as a terminal or PC If you must use a cable to connect to the DTE and your DTE device uses a DB25 connector use a straight through cable no longer than 50 feet 15 2 m If your DTE equipment uses a DB9 connector use one of the two following Black Box DB9 to DB25 adapters FA520A R2 DB9 female to DB25 male or FA521A DB9 male to DB25 female For your convenience the Co...

Page 13: ...and 26 AWG the higher numbered gauges may limit distance somewhat We recommend using Category 5 solid 24 AWG cable For your convenience the Converter comes with either an RJ 45 connector or a terminal block on the RS 485 side 4 2 1 CONNECTING VIA THE RJ 45 INTERFACE The RJ 45 versions of the Converter use an RJ 45 connector on the RS 485 side This connector is prewired for a standard telco wiring ...

Page 14: ... RS 485 CONVERTER Figure 4 1 RJ 45 Interface for the Twisted Pair Line Figure 4 2 Orientation of the RJ Connector 1 1 1 2 3 4 5 6 7 8 no connection Ground no connection TX Data XMT TX Data XMT no connection Ground no connection ...

Page 15: ...al N C 1 GND 2 N C 3 XMT 4 XMT A XMT 5 XMT B N C 6 GND 7 N C 8 Connection to GND is optional 4 2 2 CONNECTING VIA THE TERMINAL BLOCK The following instructions will tell you how to open the case connect the bare wires to the terminal blocks and fasten the strain relief collar in place so that the wires won t pull loose 1 Open the case by twisting it open with a small plastic screwdriver 2 Strip th...

Page 16: ...ack the insulation on each of the two twisted pair wires about 0 25 Figure 4 3 Strip the insulation on each of the two twisted pair wires 4 Connect the wires to XMT and XMT transmit positive and negative on the terminal block care fully noting which color is positive and which color is negative ...

Page 17: ...ice XMT XMT A XMT XMT B 6 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 2 inches 5 cm from the terminal posts and press together firmly 7 Insert the strain relief assembly with the wire going through it into the slot in the bottom half of the Converter case and set it into the recess in...

Page 18: ...igure 4 4 Inserting the strain relief assembly 8 Bend the top half of the case as necessary to place it over the strain relief assembly Do not snap the case together yet Figure 4 5 Placing the top half of the case over the strain relief assembly ...

Page 19: ...ert 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 Cable installation is complete ...

Page 20: ...VERTER 5 Operation Once the Converter is properly installed it should operate transparently as if it were a standard cable connection The Converter derives operating power from the RS 232 data and control signals there is no ON OFF switch ...

Page 21: ...nd DCE Connection Wiring Figure A 1 RS 232 Pin Configuration 1 FG Frame Ground 2 TD Transmit Data Input 3 RD Receive Data Output 4 RTS Request to Send Input 5 CTS Clear to Send Output 6 DSR Data Set Ready Output 7 SG Signal Ground 8 DCD Data Carrier Detect Output 9 External Power Input Input Data Terminal Ready DTR 20 ...

Page 22: ... To Converter 3 Receive Data RD From Converter 4 Request to Send RTS To Converter 5 Clear to Send CTS From Converter 6 Data Set Ready DSR From Converter 7 Signal Ground SG 8 Data Carrier Detect DCD From Converter 9 External Power To Converter Table A 2 DCE Connection Wiring Diagram Converter 25 pin DCE Device 25 pin 1 1 2 3 3 2 4 5 5 4 6 8 20 7 7 20 6 8 ...

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