National Instruments GPIB-COM - Manuals

© National Instruments Corporation v i i GPIB-COM User Manual Contents Section OneIntroduction .......................................................................................................................... 1-1 GPIB-COM Characteristics ........................................................

Contents © National Instruments Corporation ix GPIB-COM User Manual Figures Figure 1-1. GPIB-COM Board ................................................................................................ 1-2 Figure 2-1. GPIB-COM Parts Locator Diagram ........................................................

© National Instruments Corporation 1-1 GPIB-COM User Manual Section OneIntroduction This section contains a brief description of the GPIB-COM interface and a list of its characteristicsand components. GPIB-COM Characteristics The National Instruments GPIB-COM is a high-performance talk/listen interf...

Introduction Section One GPIB-COM User Manual 1-2 © National Instruments Corporation Figure 1-1 shows the GPIB-COM interface board. Figure 1-1. GPIB-COM Board What Your Kit Should Contain Your kit should contain the following components: Item Part Number GPIB-COM interface board 180750-01 GPIB-COM U...

Section One Introduction © National Instruments Corporation 1-3 GPIB-COM User Manual Optional Equipment Item Part Number Double-Shielded Cables: GPIB Type X2 Cable - 1 m 763061-01 GPIB Type X2 Cable - 2 m 763061-02 GPIB Type X2 Cable - 4 m 763061-03 * In order to meet FCC emission limits for a Class...

© National Instruments Corporation 2-1 GPIB-COM User Manual Section TwoConfiguration and Installation This section contains information on how to configure and install the GPIB-COM into yoursystem. Configuration Figure 2-1 shows the locations of the GPIB-COM configuration jumpers and switches. Figur...

Configuration and Installation Section Two GPIB-COM User Manual 2-2 © National Instruments Corporation When installing the GPIB-COM you must determine which serial port the GPIB-COM board willrespond to and select the appropriate base address and interrupt level. The GPIB-COM can beconfigured to one...

Section Two Configuration and Installation © National Instruments Corporation 2-3 GPIB-COM User Manual Table 2-1 shows the standard base I/O address and interrupt level for each serial port. Table 2-1. IBM PC Serial Port Adapters Name of Port Base I/O Address (hex) Interrupt Level Serial Port 1 3F8 ...

Section Two Configuration and Installation © National Instruments Corporation 2-5 GPIB-COM User Manual Talk/Listen Address and Special Function Selection The GPIB-COM interface board has eight onboard DIP switches you can use to configure theGPIB controller responsibilities. In the talk/listen mode,...

Section Two Configuration and Installation © National Instruments Corporation 2-7 GPIB-COM User Manual Figure 2-6 shows the switch configuration for REN* asserted, IFC* disabled, and SRQ* disabled. Key = side you must press down for REN* ON, IFC* OFF, and SRQ* OFF; Off = 1; On = 0. This side down fo...

Configuration and Installation Section Two GPIB-COM User Manual 2-8 © National Instruments Corporation 7. Check the installation. 8. Replace the expansion slot cover of your computer. 9. Connect the GPIB cable to the GPIB-COM. Special Considerations When Using the GPIB-COM The GPIB-COM does not supp...

© National Instruments Corporation 3-1 GPIB-COM User Manual Section ThreeFunction Description This section contains a block diagram of the GPIB-COM, followed by a description of each of itsfunctional components. The GPIB-COM Interface The GPIB-COM is a completely transparent interface between GPIB d...

Function Description Section Three GPIB-COM User Manual 3-2 © National Instruments Corporation Figure 3-1 shows a block diagram of the GPIB-COM. Address Bus Interrupt Control Address Decoding INS8250A Compatible Registers IRQ3 IRQ4 AEN IOW* IOR* Data Bus GPIB Config. Jumpers Config. Jumpers PC I/O C...

Function Description Section Three GPIB-COM User Manual 3-4 © National Instruments Corporation Direction Buffers These buffers control the direction in which data information travels. GPIB Transceivers The GPIB-COM is interfaced to the IEEE-488 bus by National Semiconductor 75160A and75162A transcei...

© National Instruments Corporation 4-1 GPIB-COM User Manual Section FourRunning Diagnostic Tests The GPIB-COM Test Commands The GPIB-COM Diagnostic Tests can be used to verify the configuration of the GPIB-COM andits connection to a GPIB printer or plotter. To run a GPIB-COM diagnostic test, connect...

Section Four Running Diagnostic Tests © National Instruments Corporation 4-3 GPIB-COM User Manual When it is finished, the following message appears on the screen: Plotter test finished. Please check output to plotter with user manual instructions. If the plotter does not respond or the output on th...

© National Instruments Corporation 5-1 GPIB-COM User Manual Section FiveProgramming the GPIB-COM This section presents a description of the GPIB-COM Serial Port Emulator registers andinformation on programming the GPIB-COM. You need to use this section only if you arewriting your own serial port dev...

Programming the GPIB-COM Section Five GPIB-COM User Manual 5-2 © National Instruments Corporation Transmitter Holding Register Offset from Base I/O Address = 0 Register Address = XF8 DLAB bit in Line Control Register = 0 7 6 5 4 3 2 1 0 D6 D5 D7 D4 D3 D2 D1 D0 W The Transmitter Holding Register cont...

Section Five Programming the GPIB-COM © National Instruments Corporation 5-3 GPIB-COM User Manual Receive Buffer Register Offset from Base I/O Address = 0 Register Address = XF8 DLAB bit in Line Control Register = 0 7 6 5 4 3 2 1 0 D6 D5 D7 D4 D3 D2 D1 D0 R The Receive Buffer Register contains the c...

Programming the GPIB-COM Section Five GPIB-COM User Manual 5-4 © National Instruments Corporation Divisor Latch Least Significant Byte (LSB) Register Offset from Base I/O Address = 0 Register Address = XF8 DLAB bit in Line Control Register = 1 7 6 5 4 3 2 1 0 DL6 DL5 DL7 DL4 DL3 DL2 DL1 DL0 R / W Bi...

Section Five Programming the GPIB-COM © National Instruments Corporation 5-5 GPIB-COM User Manual Interrupt Enable Register Offset from Base I/O Address = 1 Register Address = XF9 DLAB bit in Line Control Register = 0 7 6 5 4 3 2 1 0 0 0 0 0 M S RLS THR RDA R / W The Interrupt Enable Register is a r...

Section Five Programming the GPIB-COM © National Instruments Corporation 5-7 GPIB-COM User Manual Interrupt Identification Register Offset from Base I/O Address = 2 Register Address = XFA 7 6 5 4 3 2 1 0 0 0 0 0 0 ID1 ID0 INT R The Interrupt Identification Register is a read-only register which tell...

Programming the GPIB-COM Section Five GPIB-COM User Manual 5-8 © National Instruments Corporation Line Control Register Offset from Base I/O Address = 3 Register Address = XFB 7 6 5 4 3 2 1 0 SBRK STP DLAB EVEN PEN STB WL1 WL0 R / W The Line Control Register is a read/write register that allows the ...

Section Five Programming the GPIB-COM © National Instruments Corporation 5-9 GPIB-COM User Manual Bit Mnemonic Description 3r/w P E N Parity Enable Bit If this bit is set, the INS8250 will generate and check parityaccording to the values of the STP and EVEN bits (bits 4 and5). If this bit is clear, ...

Programming the GPIB-COM Section Five GPIB-COM User Manual 5-10 © National Instruments Corporation Modem Control Register Offset from Base I/O Address = 4 Register Address = XFC 7 6 5 4 3 2 1 0 0 0 0 LOOP OUT2 OUT1 RTS DTR R / W The Modem Control Register is a read/write register that controls RS-23...

Programming the GPIB-COM Section Five GPIB-COM User Manual 5-12 © National Instruments Corporation Line Status Register Offset from Base I/O Address = 5 Register Address = XFD 7 6 5 4 3 2 1 0 TEMT THRE 0 BI FE PE OE DR R The Line Status Register provides information about the status of the data tran...

Programming the GPIB-COM Section Five GPIB-COM User Manual 5-14 © National Instruments Corporation Modem Status Register Offset from Base I/O Address = 6 Register Address = XFE 7 6 5 4 3 2 1 0 RI DSR DCD CTS DDCD TERI DDSR DCTS R The Modem Status Register gives the state of the modem control lines a...

Programming the GPIB-COM Section Five GPIB-COM User Manual 5-16 © National Instruments Corporation Programming the Serial Adapter The operation of the serial adapter is controlled by software, either IBM BIOS or an application.To transfer data to and from the serial port, the communications paramete...

Section Five Programming the GPIB-COM © National Instruments Corporation 5-17 GPIB-COM User Manual The GPIB-COM Controller Function Because most serial port applications involve communication with only one serial line, the GPIB-COM imposes some restrictions on the GPIB in order to be compatible with...

© National Instruments Corporation A-1 GPIB-COM User Manual Appendix ASpecifications This appendix lists the specifications of the GPIB-COM board. Power Requirement +5 VDC ( ± 5%) 0.75 A typical Physical Dimensions 4.2 in. by 8.75 in. I/O Connector IEEE-488 Standard 24-pin Operating Environment Comp...

© National Instruments Corporation C-1 GPIB-COM User Manual Appendix COperation of the GPIB History of the GPIB The GPIB is a link, bus, or interface system through which interconnected electronic devicescommunicate. Hewlett-Packard invented the GPIB, which they call the HP-IB, to connect andcontrol...

Operation of the GPIB Appendix C GPIB-COM User Manual C-2 © National Instruments Corporation The Controller usually addresses a Talker and a Listener before the Talker can send its message tothe Listener. After the message is transmitted, the Controller usually unaddresses both devices. Some bus con...

Appendix C Operation of the GPIB © National Instruments Corporation C-3 GPIB-COM User Manual Figure C-1 shows the arrangement of these signals on the GPIB cable connector. DIO1*DIO2*DIO3*DIO4* EOI* DAV* NRFD* NDAC* IFC* SRQ*ATN* SHIELD DIO5*DIO6*DIO7*DIO8*R E N *GND (TW PAIR W/DAV*)GND (TW PAIR W/NR...

Operation of the GPIB Appendix C GPIB-COM User Manual C-4 © National Instruments Corporation DAV (data valid) DAV tells when the signals on the data lines are stable (valid) and can be accepted safely bydevices. The Controller drives DAV when sending commands, and the Talker drives it whensending da...

Appendix C Operation of the GPIB © National Instruments Corporation C-5 GPIB-COM User Manual Physical and Electrical Characteristics Devices are usually connected with a cable assembly consisting of a shielded 24-conductor cablewith both a plug and receptacle at each end. This design enables devices...

Appendix C Operation of the GPIB © National Instruments Corporation C-7 GPIB-COM User Manual Configuration Restrictions To achieve the high data transfer rate that the GPIB is designed for, the physical distance betweendevices and the number of devices on the bus is limited. The following restrictio...

User Comment Form National Instruments encourages you to comment on the documentation supplied with ourproducts. This information helps us provide quality products to meet your needs. Title: GPIB-COM User Manual Edition Date June 1990 Part Number: 320197-01 Please comment on the completeness, clarit...