B&B Electronics manual Power Supply Connections, Typical RS-485 2-wire Connection

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Figure 2.3 - Typical RS-485 2-wire Connection

Figure 2.4 - Typical RS-422 Connection

Power Supply Connections

The 485SDA10 requires 7 to 18 V DC at 30mA. Remember that the 30mA requirement doesn’t include the power consumption of any external devices. Therefore, any current sourced with the digital outputs must be added to this value.

485SDA103798 Manual

B&B Electronics -- 707 Dayton Rd. -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 434-7094

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Contents Electronics Mfg. Co. Inc Designed and Manufactured Ottawa, IllinoisInternet Table of Contents Tables Software485SDA103798 Manual Table of Contents Iii 485SDA10 Unit 485SDA10 FeaturesPacking List Software InstallationWindows 9x and Windows NT UninstallGetting Started WindowsA/D with Variable Resistor 485SDA10 Specifications Ref Input + Inputs #0-10Ref Input Analog GroundTypical Connections Digital Outputs #0-2 Digital I/O Connections485SDA10 I/O Port Pinout Digital Inputs #0-2Typical Digital I/O Connections Digital GroundRS-485 Terminal Block Connections Serial Port ConnectionsTypical RS-485 2-wire Connection Power Supply Connections485SDA10 Commands CommandsReading A/D Channels Command SyntaxEquivalent Values AddrRA# Ch#MSBch#LSBch#-1MSB...ch0MSBch0LSBRead A/D Response Read Digital I/O Response for Outputs Reading Digital I/O CommandAddrRD StatesSet Digital Output Data Byte Values Set Digital Output CommandSet Module Address Command AddrSOstatesSet Power-up States Command Set Turn-around Delay CommandRead Module Configuration Command Addressstatesdelay Sampling Rate Input RangeReference Inputs Converting Data Data RangePage MSB$ = INPUT$1, #1 LSB$ = INPUT$1, #1 Read A/D CommandCommand$ = ! + CHR$addr + RA + CHR$channel Print #1, Command$Read Digital I/O Command Command$ = ! + CHR$addr + RDReply$ = INPUT$ 1, #1 Digital I/O Mask Values Set Digital Output StatesAddr = Command$ = !0SO + CHR$statesCommand$ = ! + CHR$addr + SO + CHR$newaddr Set Module AddressAddr = 5 states = States = states and NOTmaskCommand$ = ! + CHR$addr + SC + CHR$delay Set Turn-around DelayRead Module Configuration #addrRA00FF 00FF01FEComp = not x and &HFF Table A-1 Extended Commands Appendix B Analog Input Impedance 1 2 LSB = R s + 1k Ω × 60pF × ln2048 Simplified Analog Input Analysis485SDA103798 Manual Appendix B Table C-1 Decimal to HEX to Ascii Table Appendix C Decimal to HEX to Ascii TableClass a Equipment

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RS-485 specifications

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