Power Supply Connections | B&B Electronics 232OPSDA specification

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

9

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

Electronics Mfg. Co. Inc Designed and Manufactured Ottawa, IllinoisInternet Table of Contents Page 232OPSDA Features Introduction General Block Diagram Packing List Software Installation 232OPSDA SpecificationsAnalog to Digital Converter Power Supply Digital InputDigital Output Communications Connections Terminal Function Description Block 232OPSDA Digital I/O Connections Serial Port Connections 232OPSDA Power Supply Connections Commands Syntax Reading A/D Channels Command Reading Digital I/O Command Set Digital Output Command0RD States Sampling Rate Converter RangeNon-buffered 0 to 5VDC A/D Inputs Buffered 0 to 5V A/D Inputs To 10VDC A/D Input 20mA Current Loop A/D Input Gain = Application Program Interface B232OPSDAReadDigital Syntax C B232OPSDASetDigitalOutput ReturnsDeinitComPort Purpose See Also Low-Level Communications Port AddressReturns See Also DeinitComPort Read A/D Command Command$ = !0RA + CHR$channelPrint #1, Command$ MSB$ = INPUT$1, #1 LSB$ = INPUT$1, #1 Read Digital I/O Command Command$ = !0RD Reply$ = INPUT$ 1, #1States = ASCReply$ Status = states and mask Command$ = !0SO + CHR$states Set Digital Output State‘ Set Output High states = states or mask States = states and NOTmask Appendix a Decimal to Hex to Ascii Conversion Decimal to HEX to Ascii Conversion Table