ParallelEnable
Sets or Retrieves the status of the ParallelEnable property. Enables or Disables Comport Parallel IO.
Available at DesignTime and Runtime. ReadOnly when the port is open.
Only available using the Comm32 ocx. Not supported by MSComm32
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Syntax |
object.ParallelEnable = value |
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object |
Name of the communications control. |
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value |
A boolean expression. True or False Enable or Disable Parallel IO (Default True) |
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Examples |
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object.ParallelEnable = True |
'// Set the value |
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If object.ParallelEnable = True Then
MsgBox ("Parallel IO is enabled")
Else
MsgBox ("Parallel IO is disabled")
End If |
'// Retrieves the value |
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Remarks:
When using Microsoft's MSComm32 control with some USB adapters or virtual com ports you may encounter Run-time error '8020' Error reading comm device. The cause of this error appears to be related to an unexpected hardware device driver error ERROR_IO_PENDING lower down in the windows com driver.
In such case MSComm32 would correctly send data but never be able to receive any data. Calling the .Input method triggers a runtime error 8020
Using the same hardware our Comm32 control might also be affected.
Disabling Parallel IO (set .ParallelEnable=False before opening the port) will often fix this problem. |
