Parallel Port Detect TTL Voltages

[saykhoon]

Hello,

I'm trying to use LPT1, my printer port to detect incoming voltages. The voltages are 5V and 0V, high and low. I know that parallel ports are capable of detecting the voltage changes.

As I'm new to Labview programming, can anyone be kind enough to guide me along?

Thanks

From
Don

[tbob]

Look in the Labview directory examples\portaccess\parallel port examples.llb for examples on how to use the parallel port.

[Ray.R]

As tbob says...

If you have LV7, there may be more examples by doing a seach using the example finder for the parallel port. There were a few last time I checked. There are a couple of very useful ones which allow to write/read any lines of the port.

Read the instructions as well, because you may need to set your port within the BIOS (CPP / EPP / Standard) modes.

JLV