VXI VM4016 user manual Setting the Chassis Backplane Jumpers, Setting the Logical Address

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VXI Technology, Inc.

SETTING THE CHASSIS BACKPLANE JUMPERS

Please refer to the chassis User’s Manual for further details on setting the backplane jumpers.

SETTING THE LOGICAL ADDRESS

The logical address of the VM4016 is set by a single 8-position DIP switch located near the module’s backplane connectors (this is the only switch on the module). The switch is labeled with positions 1 through 8 and with an ON position. A switch pushed toward the ON legend will signify a logic 1; switches pushed away from the ON legend will signify a logic 0. The switch located at position 1 is the least significant bit while the switch located at position 8 is the most significant bit. See Figure 2-1for examples of setting the logical address switch.

ON

1 2 3 4 5 6 7 8

SET TO 4

ON

 

 

 

 

 

 

 

1

2

3

4

5

6

7

8

SET TO 168

ON

 

 

 

 

 

 

 

Switch

Switch

 

 

 

 

 

 

 

Position

Value

 

 

 

 

 

 

 

 

1

2

3

4

5

6

7

8

1

1

 

SET TO 8

 

2

2

 

 

 

 

 

 

 

 

3

4

 

 

 

 

 

 

 

 

4

8

ON

 

 

 

 

 

 

 

5

16

 

 

 

 

 

 

 

 

6

32

1

2

3

4

5

6

7

8

7

64

SET TO 255

8

128

 

(Dynamic)

 

 

 

FIGURE 2-1: LOGICAL ADDRESS SWITCH SETTING EXAMPLES

The VMIP may contain three separate instruments and will allocate logical addresses as required by the VXIbus specification (revisions 1.3 and 1.4). It is necessary that the address of the first instrument (the instrument closest to the top of the module) be set at an address which is divisible by 4 and not set to 0. Switch positions 0 and 1 must always be set to the OFF position. Therefore only addresses of 4, 8, 12, 16 ... 252 are allowed. The address switch should be set for one of these legal addresses and the address for the second instrument (the instrument in the center position) will automatically be set to the switch set address plus one; while the third instrument (the instrument in the lowest position) will automatically be set to the switch set address plus two.

If dynamic address configuration is desired, the address switch should be set for a value of 255. Upon power-up, the slot 0 resource manager will assign logical addresses to each instrument in the VMIP module.

FRONT PANEL INTERFACE WIRING

The VM4016’s interface is made available on the front panel of the instrument. The 16-channel version (VM4016-1) will have J201 that contains all signals for this instrument. The 32-channel version (VM4016-2) will have J201 and J202 provided, while the 48-channel version (VM4016-

3)will have J200, J201 and J202. The wiring for each of these connectors is identical and since each group of 16 channels is treated as a separate instrument, the module will have three Channel 1s, three Channel 2s, three Channel 3s, etc.

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VM4016 Preparation for Use

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Contents VM4016 Page Table of Contents VXI Technology, Inc Warranty Limitation of WarrantyCertification Restricted Rights LegendC L a R a T I O N O F C O N F O R M I T Y EMCGeneral Safety Instructions Terms and SymbolsThis product. Product should be inspected or serviced Support Resources VXI Technology, Inc VM4016 Preface Introduction IntroductionDescription Front Panel LayoutVM4016 Block Diagram VM4016 General Specifications IRQ OutputCalculating System Power and Cooling Requirements InstallationPreparation for USE Setting the Logical Address Setting the Chassis Backplane JumpersFront Panel Interface Wiring Signal PIN Number Analog Comparator PIN Outs1631 Examples of Scpi Commands FETCHCONDITIONED? ProgrammingFETCHLATCHED? FETCHRAW? Inhousepseudo Inhouseregint InhouseregintInhouseregenable Inhouseclearlatch Inputdebounce ExamplesInputmask INPMASK?INPutMASKINTerrupt boolean Where boolean is 0 OFF 1 on InputmaskinterruptInputoffset INPOFFS?Inputpolarity INPutPOLarity NORM,@35Inputrange Outputpolarityexternalinterrupt Outputpolarityexternallatched Application Examples ExampleCommands Description Single Channel OperationControl Page Bracketing a Voltage Sets the external interrupt output to be active highBracketing AN Input Voltage Page Register Access Examples Register MAPFor example Pseudo Register Access VXIPLUG&PLAY Driver Examples VM4016 Programming VXI Technology, Inc Command Dictionary Alphabetical Command ListingIeee 488.2 Common Commands Instrument Specific Scpi Commands NormalScpi Required Commands Command Dictionary Query ParametersCommon Scpi Commands CLSESE Response DescriptionESR? IDN? OPC Query Parameters Query Response DescriptionRST SRE STB? TRG TST? WAI OPCInstrument Specific Scpi Commands FETChCONDitioned?FETChLATChed? FETChRAW? Inhouseclearlatch Inhousepseudo Inhouseregint Inhouseregenable INPutDEBounce INPutMASK INPutMASKINTerrupt INPutOFFSet INPutPOLarity INPutRANGe OUTPutPOLarityEXTernalINTerrupt OUTPutPOLarityEXTernalLATChed Required Scpi Commands STATusOPERationCONDition?STATusOPERationENABle STATusOPERationEVENt? STATusPRESet STATusQUEStionableCONDition? STATusQUEStionableENABle STATusQUEStionableEVENt SYSTemERRor? SYSTemVERSion? Theory of Operation Input Range Control Relay Signal Comparison Interrupt Generation Interrupt Generation Index OUTPutPOLarityEXTernalLATChed