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B&B Electronics RS-485 Digital I/O Module 485SDD16 User Manual

Manual is about: B&B Electronics RS-485 Digital I/O Module User Manual

Summary of RS-485 Digital I/O Module 485SDD16

  • Page 1

    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 number 485sdd16-1005 pn#3605-r1 this product designed and manufactured in ottawa, illinois usa of domestic and import...

  • Page 2

    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 ............................................... 1 packing ...

  • Page 3

    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 general purpose control module that operates through an rs-485 interface. The 485sdd16 offers 16 discrete digital i/o line...

  • Page 4

    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.) connection: terminal blocks or db-25s communications standard:...

  • Page 5

    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 required for the 485sdd16. There are three sets of connections: digital i/o, serial port, and power supply. Do not mak...

  • Page 6

    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 2.2 - rs-485 2-wire connection 8 485sdd16-1005 manual b&b electronics -- 707 dayton road -- ottawa, il 61...

  • Page 7

    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 485sdd16: set output lines, and read i/o lines. Five additional commands are used for configuring the module:...

  • Page 8

    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 represent eight i/o lines. Each bit is assigned a bit position and a weight (value). Refer to table ...

  • Page 9

    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 byte. This data byte is used to specify the mo...

  • Page 10

    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. This command requires two data bytes. Thes...

  • Page 11

    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 "high" and "low" states and show some general examples of how to interface to the i/o lines. Caution must be taken not to excee...

  • Page 12

    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 operate between 0vd...

  • Page 13

    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 techniques for constructing a command string, receiving data and manipulati...

  • Page 14

    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$(1,#1) mspups$ = input$(1,#1) lspups$ = input$(1,#1) maddr$ = input$(1,#1) mtdly$ = input$(1,#1) step 4 - manipul...

  • Page 15

    485sdd16-1005 manual 25 b&b electronics -- 707 dayton road -- ottawa, il 61350 ph (815) 433-5100 -- fax (815) 433-5104 step 1b - set appropriate outputs low msstates = msstates and (not(mask)) lsstates = lsstates and (not(mask)) by "anding" the current states with the complement of the appropriate m...

  • Page 16

    485sdd16-1005 manual 27 b&b electronics -- 707 dayton road -- ottawa, il 61350 ph (815) 433-5100 -- fax (815) 433-5104 step 1b - set appropriate outputs power-up states low mspups = mspups and (not(mask)) lspups = lspups and (not(mask)) by "anding" the current power-up states with the complement of ...

  • Page 17

    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 the user with examples of how to receive and transmit commands to the 485sdd16. The ...

  • Page 18: Appendix A

    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 decim...

  • Page 19

    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............ Ascii 80 ................. P 81 ................. Q 82 ................. R 83 ................. S 84 ................. T 85 ................. U 86 .....

  • Page 20: Appendix B

    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 485sdd16-1005 manual b&b electronics -- 707 dayton road -- ottawa, il 61350 ph (815) 433-5100 -- fax (815) 433-...

  • Page 21

    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 conversion: decimal = (1st hex digit x 4096) + (2nd hex digit x 256) + (3rd hex digit x 16) + (4th hex digit) each "hex digit" is the decimal equi...

  • Page 22: Appendix C

    485sdd16-1005 manual appendix 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 485sdd16-1005 manual b&b electronics -- 707 dayton road -- ottawa, il 61350 ph (815) 433-5100 -- fax (815) 4...

  • Page 23

    485sdd16-1005 manual appendix 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 the sixteen i/o lines of the sdd16 models. Each of the i/o lines can be programmed as an i...

  • Page 24

    485sdd16-1005 manual appendix 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. This is accomplished via switch closures, con...

  • Page 25

    485sdd16-1005 manual appendix 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 "off" external devices. Outputs can be used to control solid state output modules, logic circuits, and relays. Caut...

  • Page 26

    485sdd16-1005 manual appendix 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 manual b&b electronics -- 707 dayton road -- ottawa, il 61350 ph (815) 433-5100 -- fax (815) 433-5104.

  • Page 27: Appendix D

    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 appendix d 485sdd16-1005 manual b&b electronics -- 707 dayton road -- ottawa, il 61350 ph (815) 433-5100 -- fax (815) 433-5...

  • Page 28

    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 lines #{addr}rd {i/o msb}{~i/o msb}{i/o lsb}{~i/o lsb} set output lines #{addr}so{i/o msb}{~i/o msb}{i/o l...