You are not registered yet. Please click here to register!

plc storereviewsdownloads
This board is for PLC Related Q&A ONLY. Please DON'T use it for advertising, etc.
Try our online PLC Simulator- FREE.  Click here now to try it.

New Here? Please read this important info!!!

Go Back - Interactive Q & A > - Interactive Q & A > LIVE PLC Questions And Answers

Thread Tools Display Modes
Old June 18th, 2021, 01:36 PM   #1
James Mcquade
United States

James Mcquade is offline
Join Date: Oct 2007
Location: Tennessee
Posts: 3,089
Help with Beckoff PLC

Hi all,
i'm now working full time for a company that has a few Beckoff plc's.
i have links to training material, but i have a question.
Allen Bradley has a format scheme for their systems: B3,T4,C5, and so on.

My question is, where can i find this information for Beckoff and what is the address ranges?
any help and links to information is much appreciated.
thanks in advance,
  Reply With Quote
Old June 18th, 2021, 05:17 PM   #2
Lifetime Supporting Member + Moderator
United States

kolyur is offline
kolyur's Avatar
Join Date: Oct 2004
Location: Wooster, Ohio
Posts: 1,538
Tag addressing in Beckhoff works more similar to RSLogix 5000 than the older SLC/Micro formats you mentioned. When you create variables, it generally isn't necessary to specify an address... the compiler does it automatically and it is invisible to the user. The one main exception with Beckhoff is that if you want a variable to be linked with I/O, you have to put it in the correct address space, which means typing either %I* or %Q* in the address spot. You do have to assign a datatype to every variable, like BOOL, INT, DINT, etc.

Here's a good series of TwinCAT 3 tutorials that explains a lot of this:

Last edited by kolyur; June 18th, 2021 at 05:27 PM.
  Reply With Quote
Old June 19th, 2021, 08:50 AM   #3
James Mcquade
United States

James Mcquade is offline
Join Date: Oct 2007
Location: Tennessee
Posts: 3,089
thank you for your reply,

we also have twincat2 programs also.
so there is no mapping scheme for beckoff plc's?
i am looking at one of our programs and i see the variable declarations
variable name AT %IX201.0 and then the comment of the input.
if i am correct, we get the %IX201.0 from the electrical print.
is that true?
thanks in advance,
  Reply With Quote
Jump to Live PLC Question and Answer Forum


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Topics
Thread Thread Starter Forum Replies Last Post
More questions about RSemulator, PLC network, and career path... timcph2008 LIVE PLC Questions And Answers 0 March 8th, 2018 12:04 PM
PLC Update - Back Issues Collection Now Available! Phil Melore LIVE PLC Questions And Answers 11 October 22nd, 2015 03:17 AM
Siemens PLC won't auto-run after power-up Lamboom LIVE PLC Questions And Answers 5 August 19th, 2014 05:32 PM
PC to PLC Protocol TheRixta LIVE PLC Questions And Answers 13 December 17th, 2008 01:56 PM

All times are GMT -4. The time now is 12:13 PM.