adccommunitymod (AutomationDirect) asked a question.
D2-CTRINT preset sorting
Created Date: October 03,2003
Created By: Eric Rousculp
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I have an application that requires high speed operation and continuously variable presets (will get out of assending order). Has anyone written a routine to sort preset values and come up with a system to use them?
Created Date: October 03,2003
Created by: Eric Rousculp
I have an application that requires high speed operation and continuously variable presets (will get out of assending order). Has anyone written a routine to sort preset values and come up with a system to use them?
Created Date: January 01,2004
Created by: elevmike
We built a positioning system that uses an encoder/up-down counter. The presets are not programmed in but set on the jobsite by placing the controller in a "setup mode ". The setup mode allows the operator move the positioning system to the position to be recorded, then presses a button to Move the current up/down counter value into Vmem. The presets are loaded into FlashRom with the MOVE instruction. The DL240 has a Non-Volitale memory area that will retain the values on a power cycle.
The presets are kept in order by using indirect addressing, once the value in V4000 is loaded from the up/down counter, the INC steps the next preset to V4001 etc..I think there 240 Vmem locations in the DL240 Cpu.
When the program is in the "run " mode, (not the plc mode) we jump to a sub that has conditional contacts that compare the up/down counter value to the preset value and produces a output to control the drive.
Your in for some serious brain work.
I hope this helps some.