fvtc_ams

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About fvtc_ams

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  1. Hi there, my lab partner and i are currently finishing up a school project and have run across a little snag in our programming. We are using five inputs. these five inputs will altogether trigger three/four outputs in various combination. We have set up in basic ladder/logic input bits that will trigger corresponding outputs and light indicators. example. input1=1, output1=1, light1=1 so if input1 is true, it turns on output1 and light indicator 1, and so on for the next four sets as well. our problems come in with our next output sets. the inputs (inputs 1- 5) also trigger two dual acting pneumatic cylinders. these two are set up opposite each other and move opposite one another. example cylinder 1 cylinder2 ----------> <----------- when any of the input signal is true, one of the cylinders will move cylinder1 cylinder2 -----------><------------ then on the next cycle for the inputs, the next cylinder will move cylinder1 cylinder2 ----------><---------- hope this makes sense. the goal is to have the cylinders only fire on momentarily, but if the input signal is true, what ends up happening is the cylinders will stay on, so the other cant move until the input signal that was on is false. we are using a JSR to jump to a structured text logic for the cylinders. if input1 or input 2 or input 3 or input 4 or input5 then cylinder1=1 else cylinder1=0 <transition> if input1 or input 2 or input 3 or input 4 or input5 then cylinder2=1 else cylinder2=0 <transition> after the 2nd transition, we just loop the instruction back to the first cylinder logic. sorry if the post is kind of long. any help would be appreciated. we have thought about using timers to control the output but are having problems setting that up in structured text. again, what we are trying to do is have inputs 1-5 trigger the two cylinders in sequence momentarily. thanks.
  2. Hi, my lab partner and i (currently students at fox valley tech college in appleton, wi) are working on a school project. We have come across a problem that we can't seem to find a solution to. We are using an Allen Bradley plc that communicates between all our devices (omron vision system, panel view touch panel, and SMC EX250-SEN1 valve bank and air sensors). Our problem is with the touch panel programming using Factory Talk View Studio. We have set up our touch screens with no problem, but can't seem to get a popup window to dispaly on a condition. On our application, there is an E-Stop switch. When this button is pressed, we wanted a screen to pop up with a countdown until the system is reset (15 secs, this is tied to a timer in our PLC program from RS Logix 5000, it takes the valve back 15 secs to recover from a emergency condition). but we cant figure out how to make an conditional popup window that will display on top of the current screen. This is what we are currently using: Allen Bradley PLC: Compact Logix 5323E-QB1 Touch Panel:Panel View Plus 700 RS Logix: RS Logix 5000 V17.00.00 (CPR 9 SR 1) Factory Talk View Studio: Release 5 build 55 thanks for reading, and we hope someone out there has an idea