I am a student at Utah State University and am working on a project that involves a PLC-5. I am hoping some of you won't mind offering some advice! A group of us Electrical Engineering students are trying to interface a barcode scanner with a 1771-DA ASCII card. In RSLogix 5, I used the setup dialog to "insert ladder rungs" to initialize the card. It seems the BTW/BTR blocks are functioning, but i cannot figure out how to send or receive data via RS232. I have a computer connected to test the communication, but sending ASCII codes to the card from the computer does nothing (at least from what i can tell). I was thinking by sending the ASCII codes as described, the ASCII codes would get stored in the storage blocks in a sort of buffer (there are 64 blocks for both send and receive).
I have been frantically searching for info about how to initialize this card, but only find info for the PLC2 and PLC3 systems. Any advice or suggestion would be greatly appreciated.
Thanks in advance,
-Ben
I have been frantically searching for info about how to initialize this card, but only find info for the PLC2 and PLC3 systems. Any advice or suggestion would be greatly appreciated.
Thanks in advance,
-Ben