FX-485PC-IF RS485 Interface Unit Hardware Manual JY992D81801A
Contents
1. Otherwise Check power supply unit and connection 4 2 SD LED and RD LED Check Check the status of the SD LED and the RD LED Location LED Status Check Point SD LED is lit Wiring between computer and 485PC IF is OK Check wiring between computer and 485PC IF Check that data has been sent from computer RD LED is lit Wiring between programmable controller and 485PC IF is OK Sending data form computer to programmable controller s SD LED is not lit Sending data form programma ble controller to computer RD LED is not lit Check wiring between programmable controller and 485PC IF Check set ting of programmable controller s for computer link Guidelines for the safety of the user and protection of the FX 485PC IF RS485 Interface Unit e This manual has been written to be used by trained and competent personnel This is defined by the European directives for machinery low voltage and EMC e If in doubt at any stage during the installation of the FX 485PC IF always consult a professional electrical engineer who is qualified and trained to the local and national standards If in doubt about the operation or use of the FX 485PC IF please consult the near est Mitsubishi Electric distributor Under no circumstances will Mitsubishi Electric be liable or responsible for any consequential damage that may arise as a result of the installation or use of this equipme2. DTP No used This pin is connected to DR DSR inside 485PC IF In some cases computer may require connection 21t025 NC No connection 2 Wiring Caution for wiring e The terminal screws for the terminal block of the RS485 are M3 screws and therefore the crimp style terminal see drawing suitable for use with these screws should be fitted to the cable for wiring For M3 0 12 For M3 0 12 The terminal tightening torque is 0 5 to 0 8 Nm 5 to 8 kgf cm and tighten securely to avoid malfunction 2 1 Connecting to a Computer RS232C Pin No D D RS Dimensions mm inches 6 2 mm 0 24 or less 6 2 mm 0 24 or less Note RS RTS and CS CTS DR DSR and ER DTR signals are not used but are connected inside the 485PC IF con nect wiring depending on the need of the computer 2 2 Connecting to a Programmable Controller s RS485 RS422 2 2 1 Selection of Wiring Wiring of RS485 is one pair wiring or two pair wiring The wiring method is decided according to the usage Please select the wir ing method from the table below For message wait and on demand function please see FX Communication User s Manual One pair wiring Refer to section2 2 3 Two pair wiring Using ComputerEink Refer to section2 2 2 If is necessary to set the message wait to 70ms or less x O If is not necessary to set the message wait to 70ms or less O Use on d
3. a MITSUBISHI PROGRAMMABLE CONTROLLERS MELSEC P JY992D81801A Date 1999 September FX 485PC IF RS485 Interface Unit Hardware Manual This manual contains text diagrams and explanations which will guide the reader in the correct installation and operation of the FX 485PC IF RS485 Interface Unit It should be read and understood before attempting to install or use the unit Further information can be found in the FX Communication User s manual If in doubt at any stage during the installation of the FX 485PC IF Interface Unit always consult a professional electrical engineer who is qualified and trained to the local and national standards 1 Introduction The interface unit FX 485PC IF hereinafter referred to as 485PC IF can exchange signal of RS232C and RS485 RS422 for computer link 485PC IF Computer 1 1 External Dimensions Dimensions mm inches 000000000000 0000000000000 a RS232C connector b RD LED c SDLED d POWER LED e Power supply cable grip f Power feed jack Weight Approx 0 3kg 0 66lbs FX 485PC IF ICY SARS 1 Each programmable controller requires necessary adaptor or unit for suporting computer link For system configuration of computer link refer to FX communication user s manual For A series refer to A series manual FX FXON FX2N FX2NC A series programmable controller s Accessories Termi
4. emand function x O Recommendation O OK Katmai Can not use 1 When using 485PC IF with this wiring method remember to take account for or ignore the echo of the commands sent from computer 2 2 2 Two pair Wiring 485PC IF A series programmable Paetee or FAONPIBSADP controllers computer link unit i ee Grounding of resistance 100Q or less 1 R is the terminating resistor Connect the terminating resistor 3309 between terminals SDA and SDB and terminals RDA and RDB 2 The shield of the shielded twisted pair cable must be connected to ground 100 or less When using parallel link ground both side When using no protocol or dedicated protocol ground one side 3 Connect terminal FG to each terminal of the programmable controller main body grounded with resistance of 100 or less However for the computer link unit of the A series programmable controller see the manual of the computer link unit 2 2 3 One pair Wiring 485PC IF RDB LINK SG A series program mable FX2N 485 BD FX 0N 485ADP controllers computer link unit Grounding of resistance 1009 or less 1 Ris the terminating resistor Connect the terminating resistor 1109 between terminals RDA and RDB 2 The shield of the shielded twisted pair cable must be connected to ground 1002 or less 3 Connect terminal FG to each terminal of the programmable controller main body grounded with resistance of 100Q or les
5. nating resistor 3309 x 2 110 x 1 RS 422 485 WARK 1 18 Used for connection between 485PC IF and computer Lit when the programmable controller sends data to the computer Lit when the programmable controller receives data from the computer Lit when 5V is supplied to the power feed jack f Safety grip to prevent disconnection of 5 V power supply Jack for connecting power supply unit c _O For using a plug with specifications refer to section 3 2 g Terminal cover mounting screws M3 0 12 h Terminal for RS422 485 Used in connection 485PC IF and programmable controller s Terminal Description SDA This terminal is used when the programmable controller receives data SDB from the computer RDA This terminal is used when the programmable controller sends data to RDB the computer LINK SG Signal ground 1 2 RS232C Connector Pin Layout D SUB 25 Pin Pin No Signal Name Description 1 NC No connection 2 SD TXD Send data 485PC IF RS232C device computer 3 RD RXD Receive data RS232C device computer 485PC IF 4 RS RTS No used These pins are connected inside 485PC IF In some cases computer 5 CS CTS may require connection No used This pin is connected to ER DTR inside 485PC IF In some cases com 6 DR DSR i i puter may require connection 7 SG Signal ground 8to19 NC No connection 20 ER
6. nt All examples and diagrams shown in this manual are intended only as an aid to understanding the text not to guarantee opera tion Mitsubishi Electric will accept no responsibility for actual use of the product based on these illustrative examples Owing to the very great variety in possible application of this equipment you must satisfy yourself as to its suitability for your spe cific application sfa MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE MITSUBISHI DENKI BLDG MARUNOUTI TOKYO 100 8310 TELEX J24532 CABLE MELCO TOKYO HIMEJI WORKS 840 CHIYODA CHO HIMEuI JAPAN Specifications are subject to change without notice
7. s However for the computer link unit of the A series programmable controller see the manual of the computer link unit 3 Specifications 3 1 General Specifications General specifications other than the those mentioned below are the same as for the FX or FX2n series programmable controller Items Description Dielectric withstand voltage 500 V AC gt 1 min tested between terminals in batch and case Insulation Resistance 5 MQ gt 500 V DC tested between terminals in batch and case 3 2 Power Supply Specifications Items Description Power source 5 V DC 5 Current consumption Max 260 mA N Hi aadi l 05 5 0 22 Use a plug with specifications as shown right i E 2 1 0 08 N fo lel o 3 3 Performance Specifications eRe meee Items Description Transmis RS232C Conforming to RS232C sion standard RS485 422 Conforming to RS485 and RS232C Communication method Full duplex communication transmission RS232C Max 15 m distance RS485 422 Max 500 m Supported baud rate 300 to 19 200 bps Isolation Photo coupler isolation and transformer isolation l l between programmable controller and communication signal 4 Diagnostics For diagnostics of computer link please see FX Communication User s Manual 4 1 POWER LED Check LED Status Description Lit Power source is OK
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