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VXI VT1538A Full Step Mode, Full and Half Speed, 4-Channel, Half Step Mode, Full Speed, 4-Channel

Models: VT1538A

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Figure 27. Full Step Mode, Full and Half Speed, 4-Channel

Figure 27. Full Step Mode, Full and Half Speed, 4-Channel

Figure 28. Half Step Mode, Full Speed, 4-Channel

Agilent E1538A Enhanced Frequency/Totalize/PWM SCP 39

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VXI VT1538A user manual Full Step Mode, Full and Half Speed, 4-Channel, Half Step Mode, Full Speed, 4-Channel

Contents

VT1538A 82-0093-000 Release April 28 VXI Technology, Inc 2031 Main StreetIrvine, CA 949 ENHANCED FREQUENCY/TOTALIZE/ PWM SIGNAL CONDITIONING PLUG-ONVXI Technology, Inc Dynamic DAC Products INTRODUCTIONStatic DAC Products VXI Technology Lake Stevens Instrument Division SUPPORT RESOURCESVXI Technology World Headquarters VXI Technology Cleveland DivisionAgilent 75000 Series C User’s and SCPI Programming ManualSignal Conditioning Plug-on Agilent Technologies E1538A Enhanced Frequency/Totalize/PWMPage Agilent E1538A Enhanced Frequency/Totalize/PWM SCP About this ManualIntroduction Identifying the Plug-on IMPORTANT Configuring Input- Output direction Setting Configuration SwitchesConfiguring Channel Pull-up Resistor Connecting To The Terminal Module InstallationFigure 4. E1419A Option 11 Terminal Module Connections Recommended Signal Connections8 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Input and Output Characteristics VRS Mode Input Operation SCP channels 0 & 1 only Programming With SCPI Commands Checking the ID of the SCP Configuring the ChannelsConfiguring I/O Direction Setting the Input Threshold Levelreturns threshold value Determining the Input Threshold LevelTo set channels 40 through 43 to input digital states Reading Static Digital StateTotalize Positive or Negative Edge State Changes About Period and Frequency Measurements To measure frequency at channel 45 with aperture of 1 second For PERiod function, the E1538 spports two distinct measurement ranges Agilent E1538A Enhanced Frequency/Totalize/PWM SCP To measure period at channel 45 as the average of 1000 signal periodschlist specifies the channels that will read pulse widths Sense Quadrature Position The value read by the algorithm can range from Example of Rotational Velocity Sense Controlling Output Polarity Programming Output ChannelsOutput Static Digital State Variable Width Pulse Per Trigger Figure 17. Output Pulse-Width-Modulated Signal Variable Width Pulse Train PWM26 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Variable Frequency Fixed Width Pulse Train FM Figure 19. Output Square Wave Variable Frequency FM Variable Frequency Square-Wave Pulse Train FM28 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Rotationally Positioned Pulse Output Rotational Pulse Command Usage Rotational Pulse Mode Variable Angular Position, Preset Pulse Width by angleRotational Pulse Mode Variable Angular Position, Preset Pulse Width by timeExample of variable position, preset width Figure 21. Variable Position, Width Preset by AngleAgilent E1538A Enhanced Frequency/Totalize/PWM SCP Variable Pulse Width by angle, Preset Angular PositionFigure 22. Variable Position, Width Preset by Time Rotational Pulse Mode34 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Example of variable width by angle, preset positionExample of variable width by time, preset position Variable Pulse Width by time, Preset Angular PositionRotational Pulse Mode 36 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP preset ch 46 pulse width to 10mspreset ch 47 pulse width to 15ms Figure 24. Fixed Position, Variable Width by TimeStepper Motor Control Use the command motor phase channel group can not be split across SCPs Figure 28. Half Step Mode, Full Speed, 4-Channel Figure 27. Full Step Mode, Full and Half Speed, 4-ChannelAgilent E1538A Enhanced Frequency/Totalize/PWM SCP 40 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Figure 29. Directly Driving 4-Phase Stepper MotorsAgilent E1538A Enhanced Frequency/Totalize/PWM SCP RST and *TST importantPage SCPI Command ReferenceCommand Syntax For newerunits only Command SyntaxFor newer PageComments INPutPOLarityINPutPOLarity? ParametersParameters level can be set to a resolution ofINPutTHResholdLEVel INPutTHResholdLEVel?generated OUTPutPOLarityOUTPutPOLarity? Send with VXIplug&play Function hpe14XXcmdReal64QComments SENSeFREQuencyAPERtureRST Condition .001 sec Send with VXIplug&play Function hpe14XXcmd ParametersParameters Related Commands SENSFREQAPERSENSeFREQuencyAPERture? SENSeFREQuencyLIMitLOWerSend with VXIplug&play Function hpe14XXcmd INITReturned Value .01667 to 250, The type is float32 Related Commands INPutPOLaritySENSeFREQuencyLIMitLOWer? SENSeFUNCtionCONDitionParameters SENSeFUNCtionFREQuencySENSeFUNCtionPERiod ParametersComments SENSeFUNCtionPWIDthSENSeFUNCtionQUADrature ParametersUsage See “Sense Quadrature Position” on page SENSeFUNCtionRVELocityParameters Send with VXIplug&play Function hpe14XXcmd54 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP ParametersSend with VXIplug&play Function hpe14XXcmd Usage See “Sense Rotational Velocity” on pageUsage See “Totalize Positive or Negative Edge State Changes” on page SENSeFUNCtionTOTalizeParameters Send with VXIplug&play Function hpe14XXcmdParameters SENSePERiodAPERtureRST Condition .001 sec Send with VXIplug&play Function hpe14XXcmd Parameters SENSePERiodAPERture?SENSePERiodLIMitUPPer Parameters58 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Send with VXIplug&play Function hpe14XXcmdParameters SENSePERiodLIMitUPPer?SENSePERiodMODE RST Condition is “APERture”interval mode currently set for period measurement Related Commands SENSePERiodMODESENSePERiodMODE? SENSePERiodNPERiodsParameters SENSePERiodNPERiods?SENSePERiodRANGeUPPer Send with VXIplug&play Function hpe14XXcmdInt32QParameters SENSeTOTalizeRESetMODESENSePERiodRANGeUPPer? RST Condition is Send with VXIplug&play Function hpe14XXcmdComments SENSeTOTalizeRESetMODE?SOURceFMSTATe ParametersComments SOURceFMSTATe?Send with VXIplug&play Function hpe14XXcmdInt16Q ParametersParameters SOURceFUNCtionRPULseParameters SOURceFUNCtionSHAPeCONDitionSOURceFUNCtionSHAPePULSe ParametersParameters SOURceFUNCtionSHAPeSQUareSOURceFUNCtionSTEPper Comments Send with VXIplug&play Function hpe14XXcmdFigure 31. Relationship of minvel, and maxvel Table 3. Stepping mode values68 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP Send with VXIplug&play Function hpe14XXcmd SOURcePULMSTATeParameters Send with VXIplug&play Function hpe14XXcmdParameters SOURcePULMSTATe?SOURcePULSePERiod ParametersParameters SOURcePULSePERiod?SOURcePULSeWIDTh ParametersParameters SOURcePULSeWIDTh?SOURceRPULsePOSitionANGLe 33,554,430 to 33,554,430Parameters SOURceRPULsePOSitionANGLe?SOURRPULseVARType UsageParameters SOURRPULseVARType?SOURceRPULseWIDThANGLe ParametersParameters SOURceRPULseWIDThANGLe?SOURceRPULseWIDThTIME 00000787 to76 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP SOURceRPULseWIDThTIME?Parameters Usage SOURRPULSEWIDTTIME? @147Input Characteristics SpecificationsGeneral Specifications Output CharacteristicsFrequency Measurement 1 mSec to 1 Second, resolutionResolution Hz TotalizerPulse Source Rotational Velocity MeasurePulse Width Measure Frequency SourceExtra Tooth Wheel CharacteristicsRotational Pulse Source 80 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP