Internet PLC Forum

Did you set a breakpoint at the location you indicated in the comment? Or do you mean that you have encountered a runtime error that point to this location?

If you have intentionally set a breakpoint at your statement DM[12]=6399 then what are you trying to examine? You can view the value in the variable DM[11] executed in the prior statement to ensure that it has been assigned the correct value. I see that you wanted to assign it 32808, however, since all DM[] are 16-bit signed integers the numbers that it can contain range from -32768 to 32767. It won't be able to contain the value 32808.  It will instead overflow and becomes number -32728.

You can examine the value in DM[11] by hovering your mouse over it and it will display its value as shown in the picture below. Or you can use "On-line Monitoring" -> View Variable screen and scroll to the second screen where all the DMs are displayed to examine the value of DM[11].

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If you have unintentionally set a break point there (it will be highlighted by a blue box around the statement) then you can remove the break point by clicking on the "Set Brk Pt" button to toggle it off as shown in the picture below. If you have uploaded the breakpoint to the PLC while doing online monitoring the PLC will stop execution at this statement and pause for your further action.

Alternatively you can also remove all break points from the "Edit-> Clear All Breakpoints" menu.

How do you count distance with a photo eye?  Photo eye typically is triggered when a part comes into front of it and block the light path into the photo eye (either transmissive or reflective). 

Once you get the reading to output the measured data to a display is very easy, especially with a PLC that has built-in display such as the Wx100 or FMD or FX PLC with a LCD420 display.

To monitor the micro-switch for changes from on to off using an interrupt (INTRDEF) and Custom Function, set up a second interrupt routine for this specific condition. This way, you can respond to both state changes of the micro-switch in real-time.
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I recommend checking online marketplaces, forums, or classified ads related to industrial automation and PLC equipment. These platforms often have listings from individuals who might have the items you're looking for available for testing. Make sure to specify your requirements and budget when posting your inquiry, and you might just find the right fit for your needs.
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