Slow communication between Citect SCADA and Quantum

Member Login

Past & Future Posts

<	August '08					>
27	28	29	30	31	1	2
3	4	5	6	7	8	9
10	11	12	13	14	15	16
17	18	19	20	21	22	23
24	25	26	27	28	29	30
31	1	2	3	4	5	6
Click on a date

Sponsored Communities

Modbus Community Users Forum

Modbus Community Developers Forum

Neat Stuff

Visit our shop for nerds in control lifestyle products.

Cool stuff

Thermal Overload

The threads that wouldn't die...
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?

Fortune

Money may buy friendship but money cannot buy love.

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...

Slow communication between Citect SCADA and Quantum

Posted by Chris on 27 June, 2008 - 12:23 am

Slow communication between Citect SCADA and Quantum 140 CPU 671 60 with NOE Ethernet module results in long time SCADA's screens opening.

Any body can help with this problem? Thank you in advance!

Chris

Reply to this post...

Posted by Nathan Slider on 23 July, 2008 - 10:18 pm

Upgrade your Modnet driver to the latest released driver v2.06.09.002 and use the Modnet20 protocol in your project. Grouping data in the PLC of similar datatypes is desired as it makes it possible for Citect to block read all the data it needs in less requests, which allows for the desired performance you request for your Quantum. Also suggest sort your Variable.dbf by Units/Types/Address using the Save_DBF.xls macro. While your at it, might as well Upgrade to v7.0 of CitectSCADA.

Cheers,
Nathan Slider

Reply to this post...

From Control Engineering magazine...

- Wireless: Free software enhances remote keyless entry security

- Radioland: Wireless spread spectrum, frequency hopping, data radio devices

- NEMA publishes code for electrical metering; ZigBee for wireless smart metering

- Free webinar on Zigbee for embedded systems

- WirelessHART compliance verification receiver available

- PTO reports high growth, cross-industry collaboration

- Wireless helps Hexion with smoke detection, control room reporting

- Wireless networks for water and wastewater plant: easy, timely info access

- Chemical company processes critical data via wireless Ethernet

- Enclosures: Improve NEMA designs, enclose wireless equipment, keep cabinets cool

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.

Our Advertisers

Help keep our servers running...
Patronize our advertisers!

Control.com - Nerds in Control