COM Automation Interface

WinEDR

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COM Automation Interface > COM Automation Interface

WinEDR implements a COM automation server which allows its recording and seal test functions to be controlled from VBSCRIPT batch files or from applications such as Matlab which supports COM automation.

The name of the WinEDR automation object is WinEDR.AUTO and is opened by the VBSCRIPT command

set W = CreateObject(“winedr.auto”)

Recording functions

Recording can be started/stopped, data files created/opened and the recording trigger mode and stimulus pulse protocols selected. The recording methods and properties are listed below.

Recording Methods & Properties
.NewFile(“filename.wcp”)	Method	Creates a new data file with the supplied name
.OpenFile(“filename.wcp”)	Method	Opens a pre-existing data file with the supplied name
.RecordDuration	R/W Property	Reads/sets duration of recording (s)
.StartRecording	Method	Starts recording to disk.
.StopRecording	Method	Stops recording to disk.
.HoldingVoltage	R/W Property	Reads/sets the selected DAC channel holding voltage (V) applied to the cell. E.g. W.HoldingVoltage = -0.06
.DAChannel	R/W Property	Reads/sets the selected D/A channel to which .HoldingVoltage is applied.
.TriggerMode	R/W Property	Read/sets the recording sweep trigger mode. “F”=Free run, “E”= External trigger.
.NumTriggerSweeps	R/W Property	Read/set number of triggered sweeps to be acquired when recording with .TriggerMode=”E”
.StimulusProtocol	R/W Property	Read/sets the selected stimulus pulse protocol. e.g. W.StimulusProtocol = “prot01”
.StartStimulus	Method	Start stimulus selected by .StimulusProtocol
.Status	Read Only Property	Reads the current operational status of WinEDR. (0= idle, 1=seal test running, 2=recording to disk)

Seal test functions

WinEDR’s seal test function can be initiated via the command interface and used to apply test pulses to cells and calculate the cell membrane conductance, capacity, access conductance and pipette seal resistance. These measurements can be read via the command interface while the seal test is running.

The seal test commands are listed below:

Seal Test Methods and Properties
.StartSealTest	Method	Displays the seal test window and applies the seal test pulse.
.SealTestPulseAmplitude	R/W Property	Reads/sets the amplitude (Volts) of the seal test pulse (e.g. W.SealTestPulseAmplitude= 0.01)
.SealTestPulseDuration	R/W Property	Reads/sets the duration amplitude (S) of the seal test pulse (e.g. W.SealTestPulseDuration= 0.01)
.SealTestSmoothingFactor	R/W Property	Set cell parameters smoothing factor (0.1 - 1.0) ' 1 = no smoothing, ' 0.1 = maximum smoothing (equivalent to averaging over 10 pulses
.Vm	Read Only Property	Reads the most recent cell holding potential (V) measurement, computed by the seal test.
.Im	Read Only Property	Returns the most recent cell holding current (A) measurement, computed by the seal test.
.Ga	Read Only Property	Reads the most recent cell access conductance (S) measurement.
.Gm	Read Only Property	Reads the most recent cell membrane conductance (S) measurement.
.Cm	Read Only Property	Reads the most recent cell capacity (F) measurement.
.Rseal	Read Only Property	Reads the most recent pipette seal resistance () measurement.

A file (WinEDR VBSCRIPT Example.vbs)containing VBSCRIPT example code can be found in the c:\winedr folder.

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