Created Date: May 03,2008

Created by: bcarlton

Though you didn't specify the HMI most work when a CHANGE happens to the screen register. Make sure that a register is set up where the HMI indicates its current screen number. Then place a rung which which compares the requested screen with the current screen. When they are the same then change the requested screen register to the manufacturer suggested value. This is usually a number which doesn't correspond to any screen.

Created Date: May 04,2008

Created by: a agnone

bcarlton why the random number? In his example I would load lets say K2 into V1401 (request). Then when K2 came back to V1400 (actually screen displayed) I would jump to or do something else. Why the random number? I dont see why he is loading a Kx in V1400, that is the v-memory the HMI is sending back with the screen value. Don't you load Kx into V1401 and watch it come back on V1400?

Created Date: May 04,2008

Created by: bcarlton

I can't figure out what he was doing in his first code post even after the explanation. I don't know why you would send a number to the reported screen number location. Presumably a code post would be more understandable now that it works.

I didn't use the term 'random number ', he did. I mentioned that some (he hadn't revealed that it was a C-More at that point) work if, after the returned screen number was the same as the requested screen, a number should be entered which wasn't the same as any exiting screen (which I presume he interpreted as 'any old number ' or 'random number '). Though I have worked with one that required that such a method required that you enter zero. A non-existing screen number triggered an error.

Created Date: May 04,2008

Created by: Carrie

Here is the updated logic that works now. What I want the button to do on my touchscreen is load the preset number into my two counters, reset the accumulated counters to 0, and then change to the screen that i have my counters displayed on. For some reason if you load a screen number once you can't do it again so right after you change screens you need to load a "random # " (a screen number that is not being used) so that the next time a button wants to switch to screen 5 the 5 won't already be in the memory address. Here is a link from the sites help page that told me about it, I just couldn't figure out how to make it work. I am not sure this is the best way to do it but after 20 different attempts it is the way that finally worked. Here is the link and the logic, oh yeah, and I'm not a he.

http://support.automationdirect.com/faq/showfaq.phtml?id=866

// Rung 7

// Address 27

STR C105

LD K66

OUT V2000

LD K0

OUT CTA0

LD K0

OUT CTA1

OUT V1400

LD K5

OUT V1401

// Rung 46

// Address 290

STRE V1400 V1401

LD K200

OUT V1400

LD K201

OUT V1401

Created Date: May 02,2008

Created by: Carrie

I was wondering if I could get some advice, I am first time user and I cannot seem to figure this out. I have a pushbutton on my touchscreen that loads a preset into my counter memories (see rung 6) which works fine, I would also like it to switch screens when pressed. The logic I have below (see rung 5) made it switch screens once but won't work anymore after that. I have tried 20 different variations but I can't find anything that will repeat after the first time pushed. Also I have about 35 different pushbuttons which I made a separate rung for each one to load the presets into the counters, is there an easier way to do this, like have it pull from a spreadsheet or something?

// Rung 5

// Address 16

STR C104

LD K6

OUT V1400

LD K5

OUT V1401

LD K200

OUT V1400

// Rung 6

// Address 23

STR C104

LD K69

OUT V2000

LD K0

OUT CTA0

LD K0

OUT CTA1

Any help is greatly appreciated.

Thanks

Carrie