adccommunitymod (AutomationDirect) asked a question.
Created Date: November 28,2005
Created By: rrdoyle
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I’m using an EZ Touch HMI panel and have several Recipe Buttons. I’m having problems retaining discrete information in a recipe after the PLC is powered down. Is there a way to retain discrete data type in a Recipe even after a PLC power is cycled on/off? Can a discrete data type be somehow tied to “V� memory? I want to use a Recipe Button to load information and set the state of a discrete Indicator Button. Once I write the recipe I’m able to do this. The problem is if the PLC is powered down I loose the discrete Indicator Button state that was set in the recipe. Any suggestions?
Created Date: November 28,2005
Created by: marksji
Make sure the bit your using in the PLC for the indicator button is set in the PLC's retentative range.
Created Date: November 28,2005
Created by: rrdoyle
Thanks! That was one "bit " of information I did not "remember ".
Created Date: November 29,2005
Created by: derquock
Hi,
Can someone provide more detail on what/where is the "retentative " memory in the PLC CPU? I searched the DL205 online manual and did not come up with anything.
Thanks!
Created Date: November 29,2005
Created by: Steven
I only use the DL05/6 so I don't know about the DL205 PLC, but the retentive ranges should be the portions of memory that you tell the PLC to remember across powerups. You can pick which ranges are retentive through DirectSoft via:
PLC Menu -> Setup -> Retentive Ranges
Created Date: November 29,2005
Created by: marksji
In the 205 series I know the 240, 250, 250-1, and 260 CPUs have retentative memory.
Created Date: December 01,2005
Created by: rrdoyle
Is there a way to have a Recipe Button act like an Indicator Button? The Beeper has been disabled in the EZ Touch program and is being used to indicate a PLC action via the PLC program. All buttons on the touch panel are indicator type and the operator can view the actuation since the Beeper is disabled. The only button on this panel without a visual response is the Recipe Button. Can I somehow tie the Recipe button to an Indicator Light?
Created Date: December 02,2005
Created by: clasentech
Can't you have a word within your recipe that sets a bit in the PLC and then that bit turns on an indicator light?
Created Date: December 02,2005
Created by: rrdoyle
I'm using all twenty tags in the recipe.
Created Date: December 02,2005
Created by: clasentech
I do not see any selectable options. I think of several jerry-riggings though:
(1)
Move the recipes to the PLC and use the MOV feature using a button (with indicator) to activate the rung.
(2)
"Truncate " one of your tags to have the 16th bit be an indicator. Use it to set a bit (for the indicator) then zero the 16th bit after and use it as you would. You could use a timer or what not to reset the indicator.
I can probably fanagle some other ideas...
Created Date: December 02,2005
Created by: rrdoyle
Do the Recipe Buttons in the C-More Panel/Software have some kind of indicating feature other than the Beeper?