AdvancedHMI Software

General Category => Open Discussion => Topic started by: Darrell on September 07, 2015, 10:03:05 PM

Title: Compact Logix message instructions
Post by: Darrell on September 07, 2015, 10:03:05 PM

I see this in a  compact logix program , several MSG instructions , 12 msg isnt. all programed the same way, communicating with 4 Micro Logix 1400's . I suspect that this maybe sometimes causing slow comms over this Ethernet network. There is 1 compact Logix and 4 Micrologix 1400 and panelview plus Whats you opinion on this , I really don't think a msg have to fire this fast.

Title: Re: Compact Logix message instructions
Post by: Archie on September 08, 2015, 12:08:32 AM

That will definitely add to the network traffic and slow communications. A better route may be to write from the other controller instead of use a read. That way you can program it to only write when the data changes.