Example of Multi-Node Network | B&B Electronics 485SDD16 instruction

Figure 2.1 - Example of Multi-Node Network

Figure 2.3 - RS-422 4-wire Connection

Power Supply Connections

Power to the 485SDD16 must be supplied by an external power supply connected to the +12Vdc and GND terminal blocks or to the I/O connector. An external power supply must be able to supply 8 to 16 Vdc at 35ma.

NOTE: Power requirements of the module does not include the power consumption of any external devices connected to the module. Therefore, any current that is sourced by the digital outputs must be added to this value and the current must not exceed the maximum output source current. Refer to the 485SDD16 Specification Section of Chapter 1.

Figure 2.2 - RS-485 2-wire Connection

485SDD16-1005 Manual	7	8	485SDD16-1005 Manual
B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350		B&B Electronics -- 707 Dayton Road	-- Ottawa, IL 61350
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B&B Electronics 485SDD16 manual Example of Multi-Node Network

Contents

Internet Electronics Mfg. Co. IncDesigned and Manufactured Ottawa, Illinois Sales@bb-elec.com Support@bb-elec.com Table of Contents 485SDD16 Features 485SDD16 SpecificationsIntroduction Power Supply CommunicationsSize 485SDD16 I/O Port Pinout ConnectionsDigital I/O Connections Serial Port Connections Example of Multi-Node Network Equivalent Values Commands485SDD16 Commands Syntax Read I/O Lines Command Set Output Lines CommandBit Assignments for I/O Lines Define I/O Lines Command Set Module Address CommandSet Turn-around Delay Command Command AddrSC Argument Read Configuration command returns the modules I/O Set Power-up States CommandRead Configuration Command Command AddrRC Argument None Response Interfacing Digital Inputs Isolated Solid State Input Digital Outputs Software Programming TechniquesDigital I/O Mask Values MSpups = MSpups and mask LSpups = LSpups and mask Set Output States CommandMSdefs = MSdefs and mask LSdefs = LSdefs and mask MSstates = MSstates or mask LSstates = LSstates or mask Cmnd$ = ! + CHR$Maddr + SO + CHR$MSstates + CHR$LSstates Define I/O Lines CommandSet Power-up States Command Maddr = Cmnd$ = ! + CHR$Maddr + SS + CHR$MSpups + CHR$LSpups Set Module Address CommandMSpups = MSpups and NOTmask LSpups = LSpups and NOTmask LSpups = LSpups or &H20 Demonstration Program Running Demonstration Program Decimal 485SDD16-1005 Manual Appendix a 119 120 121 122 123 124 125 126 127 485SDD16-1005 Manual Appendix a Appendix B 485SDD16-1005 Manual Appendix B 3rd Hex digit Decimal to Hexadecimal Conversion252 240 4th Hex digit Decimal equals 10FC hexadecimal Appendix C Table C.1 DTB25 Connections Table C.2 DBM16 I/O ConnectionsDBM16 Interfacing Figure C.4 Solid State Input 485SDD16-1005 Manual Appendix C Total DBM16 Specifications LinesPower Supply Input Voltage Connections Size Figure C.10 DBM16 Schematic 00FF01FE #addrRDMsb~ I/O msbI/O lsb ~ I/O lsb Comp = not x and &HFF Table D-1 Extended Commands 485SDD16-1005 Manual Appendix D