Gebruiksaanwijzing /service van het product 485DSS van de fabrikant B&B Electronics
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Distributed Smart Switch Model 485DSS Document No. 485DSS3298 This product Designed and Manufactured In Ottawa, Illinois USA of domestic and imported parts by B&B Electronics Mfg. Co. Inc. 707 Dayton Road -- P.O. Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Internet: http://www.
485DSS3298 Manual Table of Cont ents i B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 TABLE OF CONTENTS CHAPTER 1: HARDWARE ................................................................... 1 I NTRODUCTION .
ii Table of Contents 485DSS3298 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 APPENDIX C: CABLE CHARTS ...................................................... C- 1 C HART 1. IBM PC DB25 C ONNECTOR TO .
485DSS3298 Manual 1 B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Chapter 1: HARDWARE Introduction The RS-485 Distributed Smart Switch (485DSS) connects one RS-232 device to an RS-485 multi-node network as shown in Figure 1.
2 485DSS3298 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Specifications Model: 485DSS Size: 4.
485DSS3298 Manual 3 B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 RS-232 Port The RS-232 DTE port is an asynchronous port that supports TD and RD signals. In order to make the proper connections to the RS- 232 port.
4 485DSS3298 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 RS-422/485 Wiring RS-485 receivers also have an enable/disable control line. The 2W/4W jumper selects when to enable and disable RS-485 receiver.
485DSS3298 Manual 5 B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 SD control automatically enables the RS-485 driver by sensing the leading edge of the first character transmitted to the RS-232 port.
6 485DSS3298 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Figure 3. RS-485 Wiring Diagram 4-Wire Mode To configure the 485DSS for RS-485 or 422 four-wire mode, place the jumper in the 4 W position.
485DSS3298 Manual 7 B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Figure 4. RS-422 Wiring Diagram RS-485 and RS-422 Termination A jumper labeled “TERM” provides termination for the RS- 485/422 receiver.
8 485DSS3298 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Operation The host computer of the RS-485 network cont rols each 485DSS on the network by sending them command messages.
485DSS3298 Manual 9 B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Three red LED indicators are loca ted on top of the 485DSS. The LED labeled TD flashes when the RS-232 device is transmitting data. The LED labeled RD flashes when data is being received by the 485DSS from the RS-485 network.
10 485DSS3298 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 The Command String All Command Strings consist of four ASCII characters. The first character is the start of message character, " X-off " (decimal 19).
485DSS3298 Manual 11 B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 If you were writing a program in BASIC to turn on address 10 decimal (0A hexadecimal.
12 485DSS3298 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 in the address field specifies all 485DSS's on the network. This command temporarily turns off (disconnect) the RS-232 port from the network while transmitting the reply message.
485DSS3298 Manual 13 B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Example: A unit with a decimal address of ten will have a delay of 220 milliseconds [(10 x 0.
14 485DSS3298 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 If you were writing a program in BA SIC to request status from address 5 decimal, yo.
485DSS3298 Manual 15 B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Example 1: To set the address to decimal 21 (15 hex), you would turn on switches 1, 3, and 5 (1 + 4 + 16 = 21).
16 485DSS3298 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Chapter 2: SOFTWARE Description The Distributed Smart Switch Demonstration (DSS_DEMO) Program (IBM PC or Compatible) provides the user with examples of how to receive and transmit commands to the 485DSS.
485DSS3298 Manual 17 B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Running Demonstration Program Before you can run the demonstration program, you must run the install program described in the “Hard Drive Installation” section above.
485DSS3298 Manual Appendix A A- 1 B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Appendix A: ASCII Character Codes DECIMAL to HEX to ASCII CONVERSION TA.
485DSS3298 Manual Appendix B B- 1 B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Appendix B: Decimal/Hexadecimal/Conversions The decimal (base 10) numbering system represents each position in successive powers of 10, with each decimal symbol having a value from 0 to 9.
B- 2 Appendix B 485DS32985 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Hexadecimal to Decimal Conversion: Each “Hex digit” is the decimal equivalent value of the hexadecimal symbol. Example: Convert 10FC hexadecimal to decimal.
485DSS3298 Manual Appendix C C- 1 B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Appendix C: Cable Charts These charts indicate some common cable wiring based on the 485DSS RS-232 and RS-485/422 ports. Refer to the Port Configuration section of this manual for more information.
C- 2 Appendix C 485DS32985 Manual B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815) 434-7094 Chart 4. RS-232 DCE Device w/DB9 Connector to 485DSS RS-232 (DTE) Port .
FCC Class A Equipm ent Statem ent FEDERA L COMM UNI CA TIONS COM MISSI ON RA DIO FREQ UENCY I NTERFA CE STA T EMENT Class A Equipmen t This equipm ent has been test ed and found to com ply wi th the limits for Class A digital device, pur suant to Part 15 of the FCC Rules.
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