BBarnhart1
Member
I need help with what most of you find probably simple, but it has me perplexed, I'm very, very new at this.... I have the basics down but I'm confused about how to do this...
1. Output
2. Two Inputs
Input #1 sends signal and says RUN (demanding)
Input #2 sends signal and says STOP (staging)
Input #1 sends signal and says RUN (however, it now OVERRIDES, Input #2 LONG ENOUGH that it clears itself) and the very next piece of paper coming down the line is STOPPED by Input #2.
Input #1 sends a signal when it is triggered, wanting a piece of paper
Input #2 sends a signal when it SEES a piece of paper under its eye
both Inputs are Photoelectric eyes.
I ALWAYS need the paper to STOP at Input #2, getting it STAGED and ready to enter the machine. As long as that photoeye is reading the paper, it is sending a 24v signal, which in essence has OPENED the contact on the PLC to STOP the motor. BUT... when Input #2 says, "I'm ready for it, send it NOW, the PLC needs to IGNORE that Input #2 is still sending its signal, OPENING its contact. BUT..... as soon as the eye is CLEARED..... it needs to make sure to catch the very next piece of paper coming.
The Input #1 that says FEED NOW, it may only be activated for a split second, so do not assume that it will be active the same amount of time as Input #2 is still sending its signal CLOSING the contact.
Also.... understand that there may be only 1/8" piece of clearance between sheets of paper, so it could be a quick BLIP between the eye Freeing itself up and CLOSING its respective contact, and then OPENING back up again.
In case this matters, after Input #1 says FEED NOW, and it releases the paper out from under OPEN PLC contact and Input #2 the machine needs to continue to feed paper until Input #2 reads the next sheet and STOPS IT.
So we are always feeding paper until Input #2 opens up and stops the sheet with sending its 24v signal, then Input #1 says, FEED NOW, and its 24v signal may only be for a split moment, but once it says FEED, the motor needs to run until Input #2 CLEARS itself, and keeps running until Input #2 says STOP, seeing the next sheet... THUS, staging it.
1. Output
2. Two Inputs
Input #1 sends signal and says RUN (demanding)
Input #2 sends signal and says STOP (staging)
Input #1 sends signal and says RUN (however, it now OVERRIDES, Input #2 LONG ENOUGH that it clears itself) and the very next piece of paper coming down the line is STOPPED by Input #2.
Input #1 sends a signal when it is triggered, wanting a piece of paper
Input #2 sends a signal when it SEES a piece of paper under its eye
both Inputs are Photoelectric eyes.
I ALWAYS need the paper to STOP at Input #2, getting it STAGED and ready to enter the machine. As long as that photoeye is reading the paper, it is sending a 24v signal, which in essence has OPENED the contact on the PLC to STOP the motor. BUT... when Input #2 says, "I'm ready for it, send it NOW, the PLC needs to IGNORE that Input #2 is still sending its signal, OPENING its contact. BUT..... as soon as the eye is CLEARED..... it needs to make sure to catch the very next piece of paper coming.
The Input #1 that says FEED NOW, it may only be activated for a split second, so do not assume that it will be active the same amount of time as Input #2 is still sending its signal CLOSING the contact.
Also.... understand that there may be only 1/8" piece of clearance between sheets of paper, so it could be a quick BLIP between the eye Freeing itself up and CLOSING its respective contact, and then OPENING back up again.
In case this matters, after Input #1 says FEED NOW, and it releases the paper out from under OPEN PLC contact and Input #2 the machine needs to continue to feed paper until Input #2 reads the next sheet and STOPS IT.
So we are always feeding paper until Input #2 opens up and stops the sheet with sending its 24v signal, then Input #1 says, FEED NOW, and its 24v signal may only be for a split moment, but once it says FEED, the motor needs to run until Input #2 CLEARS itself, and keeps running until Input #2 says STOP, seeing the next sheet... THUS, staging it.