Black Box IC026AE-R2, IC026A-R2 manual Send It to My Address, Dmm

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CHAPTER 6: IEEE 488 Primer

Device 1

System Controller

Able to Talk,

Listen, and Control

Device 2

DMM

Able to Talk and Listen

Device 3

Printer

Only Able to Listen

Device 4

Frequency Counter

Only Able to Talk

To Other Devices

Data Bus

Data Byte

Transfer

Control

General

Interface

Management

DIO1-8

DAV

NRFD

NDAC

IFC

ATN

SRQ

REN

EOI

Figure 6-1. IEEE 488 Bus Structure.

6.3 Send It to My Address

In the previous discussion, the terms “Addressed to Talk” and “Addressed to Listen” were used. These terms require some clarification.

The IEEE 488 standard permits up to 15 devices to be configured within one system. Each of these devices must have a unique address to avoid confusion. In a similar fashion, every building in town has a unique address to prevent one home from receiving another home’s mail. Exactly how each device’s address is set is specific to the device’s manufacturer. Some are set by DIP switches in hardware, others by software. Consult the manufacturer’s instructions to determine how to set the address.

Addresses are sent with universal (multiline) commands from the Active Controller. These commands include My Listen Address (MLA), My Talk Address (MTA), Talk Address Group (TAG), and Listen Address Group (LAG).

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Contents RS-232↔IEEE Interface Converter RS-232↔IEEE 488 Interface Converter Trademarks Used in this Manual RS-232↔IEEE 488 Interface Converter NOM Statement RS-232↔IEEE 488 Interface Converter Contents RS-232↔IEEE 488 Interface Converter Contents IEEE-488 Interface SpecificationsSerial Interface General SpecificationsDescription IntroductionAbbreviations Serial Port ConfigurationGetting Started InspectionSW3 Serial Port Settings Switch SW1 Selecting the Serial Baud Rate Switch SW1 Selecting the Serial Word Length Data Bits Switch SW2 Selecting the Serial Parity Switch SW1 Selecting the Serial Handshake Selecting Terminator Substitution Switch SW2 Selecting the Serial TerminatorSwitch SW3 Selecting the Ieee Bus Terminator Selecting the ModeSelecting the Ieee Address 10. Switch SW2 Selecting the ModeFeature Selections Serial Interface 15. Selecting RS-232 or RS-422 Signal Levels Request To Send-Output-Pin RxD Receive Data-Input-PinTxD Transmit Data-Output-Pin Clear To Send-Input-Pin+TxD Transmit Data Plus-Output-Pin Vtest Test Voltage-Output-PinGnd Ground-Pin +RxD Receive Data Plus-Input-PinRTS CTS DSR RTS CTS GeneralGetting Started Controller-Mode Serial to Ieee Operation Controller OperationSerial and Ieee Terminator Substitution Ieee Address Selection Talk-Back FeaturesSwitch SW1 Enabling or Disabling Talk-Back on Terminator Switch SW2 Enabling or Disabling Talk-Back on Timeout SP1PA1000,1000PDPA1000,6000PUSP0 7470APlotter Applications A PC-Based Graphics System SW3 MacPlot Configuration Screen Setting the Internal DIP Shorting Jumper for RS-422 SW3 Printer Applications Peripheral-Mode Operation Peripheral OperationSerial and Ieee Input Buffers Ieee Data Transfers Controlled BUS Data Transfers DIO8 Ieee Input Buffer not Empty Serial-Poll Status-Byte RegisterIeee Input Buffer Full RsvNot Defined-Always Serial Input Buffer not EmptyIeee 488 Bus Implementation Use of Serial and Bus TerminatorsUntalk UNT SW3 View for Ieee Address Selection History Ieee 488 PrimerGeneral Structure RS-232↔IEEE 488 Interface Converter DMM Send It to My AddressBus Management Lines Data Valid DAV Handshake LinesData Lines Multiline CommandsTalk Address Group TAG More on Service Requests Serial Poll Address Device Part Number Function Theory of OperationComponent Layout of the Interface Converter’s Motherboard Board LayoutRED BLK CLS Appendix A. Sample Dumb-Terminal ProgramSOH Multiline MessagesAscii Character How To Read the ChartDIO1 DIO2 DIO3 IndexIndex SW1 Copyright 1998. Black Box Corporation. All rights reserved