Member Login
member
passwd
remember me on this computer.

- join now -

Search

Neat Stuff

Visit our shop for nerds in control lifestyle products.

Cool stuff
Select a topic of interest:
...and press:
Fortune
QOTD:
"I only touch base with reality on an as-needed basis!"
RSS Feed
RSS feed Use this link to get an RSS feed of the Control.com article flow, for private, non-commercial use only:
www.control.com/rss
Select a Page Style
Select one of the following styles:
- BluFu
- Classic
(cookies required)
from the Automation List department...
Twido to ethernet OTB
Software in Automation topic
advertisement
Posted by RT on 20 April, 2008 - 4:56 pm
I'm trying to establish communication between a Twido 40 I/O with embedded ethernet and Advantys OTB Remote ethernet I/O. I have used the comm macro to implement this and have found it to be quite simple. I have encountered a problem though. I can only read my inputs and not send my outputs if I have the two read and write functions in the same routine. If I seperate out the read and write on to seperate scans then both the inputs are written and outputs are set.

I am pretty sure it should work in the same ladder as I have seen working programs with exactly the same program structure and hardware as I cannot get to work.

Can anyone please comment on why this may be does firmware affect it I'm on V4.02, if you could send an example it would be very much appreciated.

From Control Engineering magazine...
Related articles from Control Engineering magazine
Above articles copyright 2008 Reed Business Information. Subject to its Terms of Use.

Your use of this site is subject to the terms and conditions set forth under Legal Notices and the Privacy Policy. Please read those terms and conditions carefully. Subject to the rights expressly reserved to others under Legal Notices, the content of this site and the compilation thereof is © 1999-2008 Control Technology Corporation. All rights reserved.

Users of this site are benefiting from open source technologies, including PHP, PostgreSQL and Apache. Be happy.

Advertisement
Our Advertisers
Help keep our servers running...
Patronize our advertisers!