Host Engineering Forum
General Category => DirectSOFT => Topic started by: Dionis on June 25, 2011, 11:51:03 AM
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Is it possible to program the keys: Up arrow, Down arrow, Left arrow, Right arrow?
I want to indicate a number from the PLC memory by the LCD Display and also modify it by the keys.
Up arrow +10
Down arrow -10
Right arrow +1
Left arrow -1
Is it possible to program by DirectSOFT?
Thanks in advance.
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Denis
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I don't believe that the status of the keys is available to the ladder program. A CMore Micro may inexpensively provide the operations you need. The software is free.
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Is it possible to program the keys: Up arrow, Down arrow, Left arrow, Right arrow?
I want to indicate a number from the PLC memory by the LCD Display and also modify it by the keys.
Up arrow +10
Down arrow -10
Right arrow +1
Left arrow -1
Is it possible to program by DirectSOFT?
Thanks in advance.
--
Denis
I don't think you can do exactly that method of adjustment, but there is a method built into the LCD for setting registers. Why not just use that? If it's a setting that needs constant adjustment and you want to make it faster and more convenient than the official method, you'll have to hardwire some buttons or the micro C-More's are really inexpensive and the software is free.
One thing I've done in the past both with physical buttons and with MMI buttons is dual-speed incrementing. Let's say you have only one button for incrementing and one for decrementing. Increment based on an internal flasher bit (SP4 is one second and SP5 is 100ms, for example). Use a timer when the operator holds down the button and after a couple seconds switch your choice of flasher bit from the slow one to a faster one.