RS-485 communication with delphi 5

Posted on 2001-06-18
Medium Priority
Last Modified: 2010-04-06
My project is to print to 3 ink jet printers, which are connected to RS-485 network. Do you know any suitable components to use with delphi 5. I would also be grateful for any example code.
Question by:sahkofinne
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions

Expert Comment

ID: 6205435
Are the printers installed in Windows (sorry but networks aren't my thing)? If they are then you should be able to simply send the document to each of the printers installed by using the PrinterIndex property of TPrinter

FOR iCount := 0 TO (Printers.Count -1)
  PrinterIndex := iCount;
  //Print the document

The Neil =:)

Author Comment

ID: 6205526
The printers are not istalled in windows.
They are special ink jet printers which prints article number to products, which are made in production line.
Each printer prints different article id.
I shoud send new data to all printers about every second.

I have done this before with RS-232 (one printer) interface but I don't know how to use RS-485 interface?


Accepted Solution

TOndrej earned 200 total points
ID: 6207348
Go to http://www.rs-485.com/software.htm and download RS-485 driver and source code example in C. You can also find RS-485 specs on that site.

Expert Comment

ID: 6223687
I find the easiest thing to do with RS-485 to PC connections is to buy a cheap 485/232 adapter, and access them via RS232.  This is an easy way to go, especially if you don't need multipoint or long distances.

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A lot of questions regard threads in Delphi.   One of the more specific questions is how to show progress of the thread.   Updating a progressbar from inside a thread is a mistake. A solution to this would be to send a synchronized message to the…
Introduction I have seen many questions in this Delphi topic area where queries in threads are needed or suggested. I know bumped into a similar need. This article will address some of the concepts when dealing with a multithreaded delphi database…
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …
In this video, Percona Solution Engineer Dimitri Vanoverbeke discusses why you want to use at least three nodes in a database cluster. To discuss how Percona Consulting can help with your design and architecture needs for your database and infras…
Suggested Courses

766 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question