HP FET MULTIPLEXER E1351A/53A manual About This Appendix, Register Addressing

Page 81

Appendix B

HP E1351A/53A Register-Based

Programming

About This Appendix

The HP E1351A and HP E1353A FET and Thermocouple FET Multiplexers are register-based modules which do not support the VXIbus word serial protocol. When a SCPI command is sent to the multiplexer, the HP E1406A Command Module (Series C) or HP E1300A/E1301A Mainframe (Series B) parses the command and programs the multiplexer at the register level.

Register-based programming is a series of reads and writes directly to the multiplexer registers. This increases throughput speed since it eliminates command parsing and allows the use of an embedded controller. Also, if slot 0, the resource manager, and the computer (HP-IB) interface are provided by other devices, a C-size system can be downsized by removing the command module.

This appendix contains the information you need for register-based programming. The contents include:

∙ Register Addressing	Page 81
∙ Register Descriptions	Page 84
∙ Register Bit Descriptions	Page 86
∙ Executing Commands	Page 90
∙ Register-Based Programming for Maximum
Speed	Page 93

Register Addressing

Register addresses for register-based devices are located in the upper 25% of VXIbus A16 address space. Every VXIbus device (up to 256 devices) is allocated a 32 word (64 byte) block of addresses. The HP E1351A/E1353A multiplexers use eight two-byte registers of the 64 addresses (32 word registers) allocated.

Figure B-1 shows the register address location within A16 as it might be mapped by an embedded controller. Figure B-2 shows the location of A16 address space in the HP E1300A/E1301A Mainframe and HP E1405/06A Command Module.

Appendix B

HP E1351A/53A Register-Based Programming 81

Image 81

Contents Contents Understanding the HP E1351A/53A FET Multiplexer Modules Appendix C.HP E1351A/53A FET Multiplexer Error Messages HP E1351A/53A FET Multiplexer User’s Manual Contents Certification Documentation History According to ISO/IEC Guide 22 and EN July 20Page Business Reply Mail Page FET Multiplexer Module Description Using This ChapterMultimeter Connection Points Analog Bus ConnectorFET Multiplexer Module Block Diagram Output 70903OUTP on Switchbox and Scanning Voltmeter ConfigurationsDigital Bus and Triggering Initial Operation Programming LanguageConfiguring the HP E1351A/53A FET Multiplexer Modules Multiplexer Card Numbers Card Numbers for Single-Module SwitchboxesCard Numbers for Scanning Voltmeter Setting the Address SwitchSelecting the Interrupt Line Number Setting the Interrupt Line NumberCard ID Switch Setting the Card ID SwitchChannel FET Multiplexer Connector Pin-out Connecting User InputsSignal Conditioning Components/Current Shunts Adding Signal Conditioning Components/Current ShuntsWiring Guidelines Connecting Field WiringWiring a Terminal Module 10. Analog Bus and Digital Bus Connections Connecting Multimeters and Signal Generators11. Analog Bus and Digital Bus Cables Analog Bus and Digital Bus CablesPage Selecting Channels Using the HP E1351A/53A FET Multiplexer ModulesUsing the HP E1351A/53A FET Multiplexer Modules Chapter Matrix Commands Used in Chapter Multiplexer CommandsScanport None Connecting Switchbox Channels to Direct TerminalsCLOS? Closing Channels 02 and 09 for a Voltage Measurement Connecting Channels 02 and 10 for 4-Wire Ohms Measurement Example Making Voltage Measurements By Scanning Scanning a Range of Switchbox ChannelsScanning Channels 100 to 215 of a Two-Module Switchbox Example Making 4-Wire Ohms Measurements by Scanning Example Making 2-Wire Ohms Measurements by ScanningDownloading a Scan List Output 70904INIT Scanning a Switchbox without a Downloaded Scan ListOutput 70904STATOPERENAB Scanning a Switchbox with a Downloaded Scan ListConnecting the Analog Bus and Digital Bus Cables Scanning Voltmeter Configuration with HP E1326BTemperature Measurement Using a Thermocouple Using the HP E1351A/53A FET Multiplexer Modules Chapter Commands for Scanning Switchbox Channels Using Scanning Trigger SourcesScanning with External Instruments Scanning Commands Trigger Sources Example Scanning With External Instruments Output 70914OUTP on Example Scanning Using Trig Out Event In PortsOutput 722TRIG Extdcvmem Fifo SCANMODE, Scanport and TRIGgerSOURce Dbus Example Scan Complete Monitor Using the Scan Complete BitCommand Types Common Command FormatScpi Command Format ROUTeSCANMODE Volt Scpi Command Reference ABORt Subsystem SyntaxExample Stopping a Scan with ABORt Parameters COUNtComments Example Query Number of Scanning CyclesExample Select Module #2 in a Switchbox for Monitoring DISPlayMONitorCARD Mode Example Enabling the Monitor ModeCONTinuous INITiateExample Query Continuous Scanning State Example Enabling Continuous ScansSTATe OUTPut∙ Downloaded Scans The OUTPut subsystem does not work with Example Enabling Trig Out Port∙ Closing Channels To close ROUTeExample Closing Multiplexer Channels ∙ Query is Software Readback The ROUTeCLOSe? commandExample Query Multiplexer Channel Closure ∙ Opening Channels To openExample ∙ Query is Software Readback The ROUTeOPEN? commandOpening Multiplexer Channels Query Multiplexer Channel Open State∙ Scanning Operation With a valid channel list Example Scanning Using External InstrumentsExample Query Scan Mode Example Query Scan Port Example Selecting the Abus PortExample Set and Query the SETTling Time Example Setting 16 μsec SETTling TimeOPERationENABle Example Enable the Status Register BitSTATus CDEScription? SYSTem∙ 16-Channel FET Multiplexer Module Description Example Reading the Description of Card #1 ModuleExample Reading the Model Number of a Card #1 Module Comments ∙ 16-Channel FET Multiplexer Module Model NumberExample Advancing Scan using the TRIGger Command ∙ Executing the TRIGgerIMMediate Command a channel listTRIGger IMMediate∙ Trig Out Port Shared by Switchboxes See the OUTPut command ∙ Enabling the Trigger Source The TRIGgerSOURce commandExample Scanning Using External Triggers Scanning Using Bus TriggersExample Query Trigger Source ANSI/IEEE Standard Ieee 488.2 Common CommandsScpi Commands Quick Reference Description Command Quick ReferencePage Connectors Used P1 Maximum Offset Voltage Number of Slots Maximum Voltage Screw Terminal Wire Size Watts/SlotInput Impedance Power Requirements Power Off High to LowHP E1351A/53A FET Multiplexer Specifications Appendix a Register Addressing About This AppendixHP E1351A/53A Register-Based Programming Appendix B A16 Address Space Inside Command Module Or Mainframe A16 Address Space Outside Command Module Or MainframeRegister Descriptions Device Type Register Register Bit Descriptions Register moduleManufacturer ID Register Status/Control Register Enable IRQ ENScan Channel Delay Register Continuous Enable CNT EN Reset Pointer RST PTRScan Control Register Direct Channel Configuration Register Scan Channel Configuration RegisterA Tree Isolation Switch Disable A-D Valid Channel VLD C1 C0Direct Control Register Executing CommandsROUTe ROUTeCLOSe channellist is equivalent to the following HP E1351A/53A Register-Based Programming Appendix B Register-Based Programming for Maximum Speed Decimal code Appendix B HP E1351A/53A Register-Based Programming Table B-1. Multimeter Command and Parameter Opcodes Multimeter Command Parameter OpcodesFigure B-3. Configuring the Multimeter Error Code Cause Multimeter Register-Based Programming Error CodesHP E1351A/53A FET Multiplexer Error Messages HP E1351A/53A FET Multiplexer Error Messages Appendix C Laddr IndexHP E1351A/53A FET Multiplexer User’s Manual Index HP-IB HP E1351A/53A FET Multiplexer User’s Manual Index HP E1351A/53A FET Multiplexer User’s Manual Index HP E1351A/53A FET Multiplexer User’s Manual Index HP E1351A/53A FET Multiplexer User’s Manual Index