Instruction/ maintenance manual of the product RS-485 Digital I/O Module 485SDD16 B&B Electronics
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485SDD16-1005 Manual Cover Page B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 RS-485 Digital I/O Module Model 485SDD16 Document ation Num ber 485SDD16-1005 pn#3605-r1 This product Designed and Manufactured In Ottawa, Il lin ois USA of domestic and imported pa rts by B&B Electronics Mfg.
485SDD16-1005 Manual Table of Contents i B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Table of Contents Chapter 1 - Introduction ........................................... 1 485SDD16 Features ...
485SDD16-1005 Manual 1 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Chapter 1- Introduction 485SDD16 Features The 485SDD16 is a genera l purpose control module t hat operates through an RS-485 inte rface.
485SDD16-1005 Manual 3 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Power Supply Input Voltage: 8 Vdc to 16 Vdc @ 35 milliamps (Doesn’t include the power consumption of external devices.
485SDD16-1005 Manual 5 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Chapter 2 - Connections This chapter will cover the connections re quired for the 485SDD16. There are three sets of conne ctions: digital I/O, serial port, and power supply.
485SDD16-1005 Manual 7 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Figure 2.1 - Example of Multi-Node Network 485SDD16 485SDD16 485SDD16 Figure 2.
485SDD16-1005 Manual 9 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Chapter 3 - Commands There are only two commands required to control the 485S DD16: set output l ines, and read I/O lines.
485SDD16-1005 Manual 11 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 A byte represents an eight-bit binary number (11111111), therefore each byte can repre sent eight I/O lines. Each bit is assigned a bit position and a weight (value ).
485SDD16-1005 Manual 13 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Set Module Address Command The Set Module Address command is used to change the address of a 485SDD16. This commands requires one data byt e.
485SDD16-1005 Manual 15 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Set Power-up States Command The Set Power-up States command is used to set the states of output lines when the module's power is recycled.
485SDD16-1005 Manual 17 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Chapter 4 - I/O Interfacing This chapter will explain "HIG H" and "LOW" st ates and show some gene ral examples of how to int erface to t he I/O lines.
485SDD16-1005 Manual 19 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Figure 4.4 - Isolated Solid State Input Digital Outputs Digital outputs are used to turn on or turn off external devices. Digital outputs are CMOS compatible and op erate between 0Vdc and +5Vdc.
485SDD16-1005 Manual 21 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Chapter 5 - Software This chapter will be divided into two sections. The first section covers programming techni ques for constructing a command string, receiving data and manipulatin g data in QuickBASIC.
485SDD16-1005 Manual 23 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Step 3 - Receiving the data: MSdefs$ = INPUT$(1,#1) LSdefs$ = INPUT$(1,#1) M.
485SDD16-1005 Manual 25 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Step 1b - Set appropriat e outputs LOW MSstates = MSstates AND (NOT(mask)) L.
485SDD16-1005 Manual 27 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Step 1b - Set appropriat e outputs power-up states LOW MSpups = MSpups AND (.
485SDD16-1005 Manual 29 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Demonstration Program The 485SDD16 Demonstration (SDD16) Program (IBM PC or Compatible) provides t he user with examples of how to receive and transmit commands to the 485SDD16.
485SDD16-1005 Manual Appendix A A-1 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 APPENDIX A ASCII Character Codes A-2 Appendix A 485SDD16-1005 Manual B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Decimal ASCII 0 .
485SDD16-1005 Manual Appendix A A-3 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Decimal ............ ASC II 80 ............... .. P 81 ............... .. Q 82 ............... .. R 83 ............
485SDD16-1005 Manual Appendix B B-1 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 APPENDIX B Hexadecimal/Decimal Conversions B-2 Appendix B 485SDD.
485SDD16-1005 Manual Appendix B B-3 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Hexadecimal to Decimal Conv ersion: Decimal = (1st Hex digit x 4.
485SDD16-1005 Manual A ppe ndix C C-1 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 APPENDIX C Interface Modules for SDD16 Models C-2 Appendix C 4.
485SDD16-1005 Manual A ppe ndix C C-3 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 DBM16 The DBM16 module provides buffering and increased power handling for all t he sixteen I/O lin es of the SDD16 models.
485SDD16-1005 Manual A ppe ndix C C-5 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Figure C.2 - DBM16 Outline Drawing Inputs Digital inputs are used to sense "HIGH" and "LOW" states based on voltage levels.
485SDD16-1005 Manual A ppe ndix C C-7 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Outputs Digital outputs are used to turn "ON" or turn "O FF" external devices. Outputs can be used to control solid sta te output modules, logic circuits, and relays.
485SDD16-1005 Manual A ppe ndix C C-9 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Figure C.10 - DBM16 Schematic C-10 Appendix C 485SDD16-1005 Ma.
485SDD16-1005 Manual Appendix D D-1 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 APPENDIX D Adding Data Field Comfirmation D-2 A ppe ndix D 485SD.
485SDD16-1005 Manual Appendix D D-3 B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350 PH (815) 433-5100 -- FAX (815 ) 433-5104 Table D-1 Extended Commands Function Command Response Read I/O L.
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If you already are a holder of B&B Electronics RS-485 Digital I/O Module 485SDD16, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime B&B Electronics RS-485 Digital I/O Module 485SDD16.
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