On Tue, 07 Mar 2006 09:28:18 -0000, Jasen Betts
wrote:

On 2006-03-07, Jeff Caspari wrote:
Hi Group,

Does anyone know of a device that allows you to tap into a parallel printer
line and receive the same data into a serial port, while letting it still
print to the parallel printer?

B&B Electronics does have printer taps and parallel to serial converters but
the setup would be extremely clumsy.

I'm guessing there must be a "box" out there that just fits into the line
and then "tees" off to a serial port.

There isn't. Parallel is potentially much faster than serial, you can't
reliably intercept and pass parallel traffic by merely listening.

---
That's not what he's trying to do. He's already found a parallel
port-to-serial port converter, but what he wants is one with two
parallel port connectors wired straight-through, and the parallel-to
serial converter wired to their junctions and its output going to a
serial port connector, all in the same box.

--
John Fields
Professional Circuit Designer