Hi,
I am interested to know if PLCs have a parallel port implemented in them. The PLC is an allen bradley and has 8 digital input lines, a strobe, ready and acknowledge lines. The levels are all +24 VDC
I am curious to know if there is a standard implementation for this type of port. I have been asked to develop an interface for this, it will be very helpful if there are documentations available for the parallel port, I heard it being referred to as LPT port (printer port).
I can implement a parallel port interface easily in my design if documentation were available, but my problem how do I test this apart from using on the target PLC.
More specifically I am interested in knowing how can 16 bit data be strobed in using just 8 bits.
thanks
a
I am interested to know if PLCs have a parallel port implemented in them. The PLC is an allen bradley and has 8 digital input lines, a strobe, ready and acknowledge lines. The levels are all +24 VDC
I am curious to know if there is a standard implementation for this type of port. I have been asked to develop an interface for this, it will be very helpful if there are documentations available for the parallel port, I heard it being referred to as LPT port (printer port).
I can implement a parallel port interface easily in my design if documentation were available, but my problem how do I test this apart from using on the target PLC.
More specifically I am interested in knowing how can 16 bit data be strobed in using just 8 bits.
thanks
a