Driving an IBM POS 2X20 Pole Display

[Robert Wells]

I have a few IBM POS pole displays. They are 2x20 and are fluorescent and
the part number is 61P5766. They have a four pin jack that is labeled 4
which I assume means it plugs into port 4 on the pos computer.I believe this
display is used on the IBM 4694 POS system. I don't know if it uses RS-232
or RS-485. I would like to be able to drive these displays from a PIC
microcontroller but I have no idea what is required to communicate with it.
I have a few LTC485 tranceivers if they are indeed RS-485. I would greatly
appreciate anyone having information on how this can be done.

Thank You,
Bob

 

[Clint Sharp]

I have a few IBM POS pole displays. They are 2x20 and are fluorescent and
the part number is 61P5766. They have a four pin jack that is labeled 4
which I assume means it plugs into port 4 on the pos computer.I believe this
display is used on the IBM 4694 POS system. I don't know if it uses RS-232
or RS-485.

Why don't you strip down the display and see if you can track down
datasheets for the chips on board, you should be able to at least make a
guess at how to drive them from that.

 

[T]

I have a few IBM POS pole displays. They are 2x20 and are fluorescent and
the part number is 61P5766. They have a four pin jack that is labeled 4
which I assume means it plugs into port 4 on the pos computer.I believe this
display is used on the IBM 4694 POS system. I don't know if it uses RS-232
or RS-485. I would like to be able to drive these displays from a PIC
microcontroller but I have no idea what is required to communicate with it.
I have a few LTC485 tranceivers if they are indeed RS-485. I would greatly
appreciate anyone having information on how this can be done.

Thank You,
Bob

More than likely it's a standard RS-232 serial connection. All the pole
displays I've ever encountred have been that way.