James Fillmore
Lifetime Supporting Member
On older Panelviews and on TCP QuickPanels when using a SLC5/XX, a message box or indicator that is controlled by an integer is updated at the end of the PLC scan (or so it appeared).
Now with the PanelView Plus connected to a CompactLogix (via ethernet), the message box or indicator will display the status based on the last number put into the controlling integer but will ocassionally flash a message or status based on a number that was put in the integer earlier in the scan.
The real application is I have a message box that is controlled by an integer.
1 will display MANUAL MODE
2 will display AUTO MODE
3 will display AUTO CYCLE
So when in auto cycle I put a 3 into the controlling integer and the AUTO CYCLE message is displayed but occassionally, for a fraction of a second every second or two, the AUTO MODE message will be displayed because I am putting a 2 in the controlling integer earlier in the scan because the machine is in auto mode while in auto cycle.
I know I could interlock ALL the lines of code so only one line is putting a number in the integer at a time but I am displaying 50+ messages. What I would LIKE is that JUST the last integer in the scan does the control (I can prioritize the ladder logic for example, #3 AUTO CYCLE is after #2 AUTO MODE and so on).
I also know I can slow down the update rate of the display but I need a fast update for other indicators and numeric displays.
Any ideas? I've been programming for 20+ years but fairly new to CompactLogix.
Now with the PanelView Plus connected to a CompactLogix (via ethernet), the message box or indicator will display the status based on the last number put into the controlling integer but will ocassionally flash a message or status based on a number that was put in the integer earlier in the scan.
The real application is I have a message box that is controlled by an integer.
1 will display MANUAL MODE
2 will display AUTO MODE
3 will display AUTO CYCLE
So when in auto cycle I put a 3 into the controlling integer and the AUTO CYCLE message is displayed but occassionally, for a fraction of a second every second or two, the AUTO MODE message will be displayed because I am putting a 2 in the controlling integer earlier in the scan because the machine is in auto mode while in auto cycle.
I know I could interlock ALL the lines of code so only one line is putting a number in the integer at a time but I am displaying 50+ messages. What I would LIKE is that JUST the last integer in the scan does the control (I can prioritize the ladder logic for example, #3 AUTO CYCLE is after #2 AUTO MODE and so on).
I also know I can slow down the update rate of the display but I need a fast update for other indicators and numeric displays.
Any ideas? I've been programming for 20+ years but fairly new to CompactLogix.
