I-O Display Systems Basic I/O Product manual

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The Basic I/O 1

THE BASIC I/O:

BASIC I/Os are a family of small, industrial grade, remote data acquisition and control systems which exchange data with a Host computer via a serial communications link. Controlled by a wide range of software running on a Host computer, Basic I/Os are located near the sensors and actuators. The serial link eliminates the need for expensive and noise prone signal wiring between field sensors and actuators, and a central control room.

Each BASIC I/O system consists of one logic board connected to a 4, 8, or 16 position I/O module mounting rack. This combination is then field configurable to accept either analog or digital electrically isolated input or output modules which can interface to a wide variety of sensors and actuators.

BASIC I/O networks can service over 4000 analog and/or digital I/O lines in various combinations.

User selected serial communications between the Host and the first BASIC I/O can be RS- 422 or RS-485. These communications links allow the units to operate up to 5000 feet apart. Baud rates from 300 to 38,400 are available.

The BASIC I/O instruction set core complies 100% with that of the OPTO- 22 Optomux ™ . With this ASCII character, speak-only-when-spoken-to protocol, a Host transmits inquiry requests to the BASIC I/O to determine the status of its various process inputs. Similarly, the software in the Host computer makes control decisions and transmits instructions to the BASIC I/O, which in turn, makes the proper changes to its various outputs. Both the Host and its communications link are essential elements in this data acquisition and process control scheme.

Software for use with the BASIC I/O system can be obtained from a variety of sources. Nearly every third party SCADA software vendor has developed a driver which is compatible with this system. In addition, the communication protocol employed by the BASIC I/O product is a published ASCII printable standard. This makes developing your own software a simple matter. duTec also offers a software solution called EASY I/O. With this package, custom QuickBASIC source code is generated to fit the signals generated to fit the signals located on the BASIC I/O. Once configured, a simple data acquisition program is automatically generated. This sample can then be altered to fit the particular needs of the user.

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Contents Page Basic I/O Product Family Page Vol.1 Table of Contents Vol Table of Contents Basic I/O Basic I/OAnalog Inputs Analog input instruction types areAnalog Outputs Digital Inputs Digital Outputs System Throughput Throughput Tables7Vol.1 Communication Protocol Analog INPUTS, 12 BIT Analog OUTPUTS, 12 BIT Diagnostics Physical CharacteristicsProduct Test Basic I/O Models12Vol.1 Setup & Installation MountingPower Wiring +5V GNDCommunicating with the Basic I/O RS-485 can only be multidrop RepeatRS-422 RS-485RS-485 Programming Communication Wiring Network load V.S. Noise suppression Network Bias Resistor LocationsRS-422 Host to Basic I/O wiring RS-422 Host to Basic I/OBasic I/O to Basic I/O RS-422 Multidrop or Repeater RS-422 Basic I/O-To-BASIC I/O multidropRS-485 Host to Basic I/O RS-485 To-BASIC I/OBasic I/O to Basic I/O RS-485 Multidrop only RS-485 Basic I/O to Basic I/O MultidropBasic I/O setup Basic I/O Connectors, Switches and IndicatorsAnalog/ Digital AddressesBaud Rates Protocol Handshake Types L2 Multidrop Network Type SwitchL1 Repeater L3 Last UnitSetup via Pushbutton U1=00 H096 L3 P2Communication verification Other error codes Hardware error codesError Code Sensor/ Actuator I/O wiring10 AC Current and Voltage Wiring Analog Inputs11 Analog Voltage and Current input Wiring 13 Analog Voltage and Current Output Wiring Analog outputs14 Digital Input Wiring Digital Inputs15 Digital Output Wiring Digital OutputsVol.1 Index Analog OutputsPage Basic I/O AD Vol Table of Contents Basic I/O AD to Basic I/O AD RS-422 Introduction CapacityProduct Test Signal compatibility Protocol Compatibility Gain/ Slope TemperatureOffsets Range LimitsPulse widths DelayedDigital inputs Read Pulse countingSquarewave Pulse GeneratorExtended capabilities Position Basic I/O AD SpecificationsOrdering Information BIO8AD/L8Vol.2 Installation InstallationPower Wiring Designing the Network MultidropRS-422 RS-485 Programming Communication Wiring Network Bias resistor locations Network Type Switches Basic I/O AD Connectors, Switches and IndicatorsLast Unit Communications Wiring RS-422 Host to Basic I/O ADRS-485 Host to Basic I/O AD RS-485 To-BASIC I/O ADBasic I/O AD to Basic I/O AD RS-422 RS-422 Basic I/O AD-To-BASIC I/O ADBasic I/O AD to Basic I/O AD RS-485 RS-485 Basic I/O AD to Basic I/O ADInstalling the I/O modules Basic I/O AD Module Placement WorksheetModule Wiring Analog Inputs 11 AC current and voltage wiring12 Analog Voltage, frequency and Current input Wiring 14 Analog Voltage and Current Output Wiring 15 Digital Input Wiring 16 Digital output wiring Offset Mode SetupChassis Setup Function addressesVariable Mode Baud Rates Changing Setup Parameters Via Pushbutton Communication Verification Hardware error codes Vol.2 Index Vol.2 Index