B&B Electronics manual Introduction, 485SDD16 Features, 485SDD16 Specifications

Page 3

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 lines. With these features, the module can be used to sense external ON/OFF conditions and to control a variety of devices.

Each of the sixteen I/O lines can be defined as either an input or an output. The digital outputs are CMOS compatible. The digital inputs are CMOS/TTL compatible. The digital I/O lines are available through a DB-25S (female) connector.

The 485SDD16 connects to the host computer’s RS-485 or RS- 422 serial port using terminal blocks. The address and turn-around delay are software programmable to allow for use of multiple devices or connection to existing multi-node systems. The unit automatically detects baud rates from 1200 to 9600. A data format of 8 data bits, 1 stop bit and no parity is used.

Configuration parameters are stored in non-volatile memory. These parameters consists of module address, communication turn- around delay, I/O definitions, and output power-up states.

The unit is powered by connecting +12Vdc to terminal blocks or to the DB-25S I/O connector.

Figure 1.1 - 485SDD16 Module

485SDD16-1005 Manual

1

B&B Electronics --

707 Dayton Road -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5104

Figure 1.2 - Simplified Block Diagram

Packing List

Examine the shipping carton and contents for physical damage. The following items should be in the shipping carton:

1.485SDD16 unit

2.Software

3.This instruction manual

If any of these items are damaged or missing contact B&B Electronics immediately.

485SDD16 Specifications

I/O Lines

 

 

Total:

16

(Factory default = inputs)

Inputs

 

 

Voltage Range:

0 Vdc to 5 Vdc

Low Voltage:

1.0

Vdc max.

High Voltage:

2.0

Vdc min.

Leakage Current:

1 microamp max.

Outputs

 

 

Low Voltage:

0.6

Vdc @ 8.3 milliamps (Sink)

High Voltage:

4.3

Vdc @ -3.1 milliamps (Source)

2485SDD16-1005 Manual

B&B Electronics -- 707 Dayton Road -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5104

Page 2 Page 4
Image 3
Page 2 Page 4
Contents Sales@bb-elec.com Support@bb-elec.com Electronics Mfg. Co. IncDesigned and Manufactured Ottawa, Illinois InternetTable of Contents 485SDD16 Features 485SDD16 SpecificationsIntroduction Power Supply CommunicationsSize Serial Port Connections ConnectionsDigital I/O Connections 485SDD16 I/O Port PinoutExample of Multi-Node Network Syntax Commands485SDD16 Commands Equivalent ValuesRead I/O Lines Command Set Output Lines CommandBit Assignments for I/O Lines Command AddrSC Argument Set Module Address CommandSet Turn-around Delay Command Define I/O Lines CommandCommand AddrRC Argument None Response Set Power-up States CommandRead Configuration Command Read Configuration command returns the modules I/ODigital Inputs InterfacingDigital Outputs Isolated Solid State InputSoftware Programming TechniquesDigital I/O Mask Values MSstates = MSstates or mask LSstates = LSstates or mask Set Output States CommandMSdefs = MSdefs and mask LSdefs = LSdefs and mask MSpups = MSpups and mask LSpups = LSpups and maskMaddr = Define I/O Lines CommandSet Power-up States Command Cmnd$ = ! + CHR$Maddr + SO + CHR$MSstates + CHR$LSstatesLSpups = LSpups or &H20 Set Module Address CommandMSpups = MSpups and NOTmask LSpups = LSpups and NOTmask Cmnd$ = ! + CHR$Maddr + SS + CHR$MSpups + CHR$LSpupsRunning Demonstration Program Demonstration Program485SDD16-1005 Manual Appendix a Decimal485SDD16-1005 Manual Appendix a 119 120 121 122 123 124 125 126 127485SDD16-1005 Manual Appendix B Appendix B240 4th Hex digit Decimal equals 10FC hexadecimal Decimal to Hexadecimal Conversion252 3rd Hex digitAppendix C Table C.1 DTB25 Connections Table C.2 DBM16 I/O ConnectionsDBM16 Interfacing 485SDD16-1005 Manual Appendix C Figure C.4 Solid State InputConnections Size DBM16 Specifications LinesPower Supply Input Voltage TotalFigure C.10 DBM16 Schematic Comp = not x and &HFF #addrRDMsb~ I/O msbI/O lsb ~ I/O lsb 00FF01FE485SDD16-1005 Manual Appendix D Table D-1 Extended Commands
Top Page Image Contents