S7 Graph Problem

cdavis

Member
Join Date
Jan 2009
Location
Athens, AL
Posts
14
OK. I have a very puzzling problem. I have a transition whose conditions are met and yet it does not proceed to the next step. The sequencer is active and is in auto (not manual or inching).

The first bitmap shows the logic how it should be. The last branch has the bit "AlwOn" which is obviously always on. This bit is true, but the graph is showing it to be false. I thought that maybe there was a limit to the number of branches in a transition so I moved it up a branch.

The second bitmap shows after I moved the "AlwOn" bit. The logic evaluates to true, but the transition does not allow the sequencer to move to the next step.

The third bitmap shows all logic removed from the transition. The sequencer will still not move to the next step.

I deleted the transition and put it back in and it started working. Has anyone seen this before and what could I do to avoid it happening again?

graph error 1.jpg graph error 2.jpg
 

Attachments

  • graph error 3.bmp
    293.9 KB · Views: 7
Maybe a long shot,
Have you used Halt or zero operand in the calling FB

Edit:
Dont think that this is the problem,, sorry.

graph001.JPG
 
Last edited:

Similar Topics

A customer of ours is running FactoryTalk View SE 6.10 and has been having a problem with the data graph. Customer states that the graph going...
Replies
7
Views
4,220
I had an issue with one of the 8 active X graphs for our oven temps. It stopped showing the lines on the graph but if I click on the graph to put...
Replies
0
Views
1,736
I have a problem in S7-Graph: I use supervisions that are generating messages for my HMI. But the interlocks do the same whil I don't want any...
Replies
7
Views
4,438
I had this problem a few months ago when I first started playing around with S7-GRAPH, but I eventually got rid of, without really knowing how...
Replies
4
Views
6,370
Hello Folks! I have an issue and its very often but in this case i applied all the tricks and tips that i always do in similiar issues but in this...
Replies
2
Views
782
Back
Top Bottom