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B&B Electronics 232OPSDA manual Power Supply Connections

Models: 232OPSDA

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Power Supply Connections

The 232OPSDA requires an isolated external power supply that is able to produce 9-16VDC @10mA in addition to the port power. The positive(+) lead of the power supply is connected to the terminal block labeled +12VDC and the negative(-) lead is connected to the terminal block labeled GND. The external power supply powers the I/O side of the module. The RS-232 side of the module is port powered using RTS and DTR. These lines may be either LOW or HIGH to provide power to the module. The two sources of power are required for optical isolation.

Documentation Number 232OPSDA1397 Manual

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5105

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B&B Electronics 232OPSDA manual Power Supply Connections

Contents

B&B Electronics Mfg. Co. Inc Not Recommended for New InstallationsOptically Isolated Serial Data Acquisition Module 232OPSDA ModuleCHAPTER 3 COMMANDS CHAPTER 1 INTRODUCTIONCHAPTER 2 CONNECTIONS CHAPTER 4 A/DAPPENDIX B 232OPSDA SCHEMATIC & BOARD APPENDIX A DEC TO HEX TO ASCII CONVERSIONA-27 B-29232OPSDA Features Chapter 1 IntroductionPacking List TD RDSoftware Installation 232OPSDA SpecificationsAnalog to Digital Converter Power Supply Digital InputDigital Output CommunicationsChapter 2 Connections A/D Connections0 to 5VDC Input 0 to 5VDC Input 0 to 10VDC Input 0 to 5VDC Input 0 to 5VDC Input GNDA/D 1 A/D 2 A/D 3 A/D 4 A/D 5 A/D 232OPSDADigital I/O Connections Serial Port ConnectionsDB25S Power Supply Connections Chapter 3 Commands Syntax Reading A/D Channels Command Reading Digital I/O Command Set Digital Output Commandstates 0SOstatesChapter 4 A/D Sampling RateA/D Converter Range Gain = VinV0 = 1+ R13R14 LoopCurrent mA× 10Ω 1000 ×Gain = 10 × LoopCurrent= 1+ Chapter 5 Software Application Program InterfaceB232OPSDAReadDigital Syntax C20Documentation Number 232OPSDA1397 Manual initComPort procedure deinitComPort hComDev wordhComDev, BYTE modAddr, WORD lines, WORD BYVAL hComDev AS INTEGER, BYVAL modAddrLow-Level Communications deinitComPortRead A/D Command Read Digital I/O Command Step 1 - Constructing the command string Set Digital Output State 26Documentation Number 232OPSDA1397 ManualAppendix A Decimal to Hex to ASCII Conversion DECIMAL to HEX to ASCII CONVERSION TABLEDocumentation Number 232OPSDA1397 Manual Appendix AA-1 B&B Electronics -- PO Box 1040 -- Ottawa, IL