Ad Infinitum

You probably have a remote device writing to that address. Fairly common occurence.

Alaric, I ended up using a LFU/LFL instruction, and just moved the word out to basically a junk address. Worked great, and thanks for the help.

Alright, logic is basically done, and HMI is good to go. Last question, and I searched the manuals I have ; What method would I use to kick out or basically un-do the newest value added to a FIFO, incase the cycle wasn't accepted by the operator ? Again, this entire process is done with nothing more than an operator controlling 1 single valve, capturing peak values and counting the total number of accepted peak cycles, along with an average of those peak pressures. Any help is appreciated fellas.

Alaric, one more question. I have modified your code , works perfect, and added it to what I already have. At the end of the 'cycle' I've created a button that accepts that cycles values, but the peak value is retained in N7:4. From a best practices standard, what would be the best way to, I'll call it 'flush' the last cycles peak, and immediately jump to the current or new cycle value ? Would just adding a CLR instruction to the already defined rung be best, or would yet another move intruction ? Thanks

Alaric, thank you for the forum welcome, and thank you for the file. I'll give it a look. I sincerely appreciate your help.

That is correct. I want to read the pressure values, shuttle them to a register that the HMI will continously display. If the pressure readings are increasing, the value is to be held. If it drops below last scan value, then the last high pressure scan reading will become the final reading for that 'cycle'. At that point, I'll need to move it again, count how many pops I've done and then keep the average PSIG of the 'pops' until a reset is hit on the HMI, and everything starts over. The problem with this process is that it is manually actuated with a filling valve. The only instrumentation to be used is the PT. Hope that helps ?

Hello Folks - I am preparing a ML1100 for what is a simple enough application, but for the life of me I can't figure out how to overcome one issue I'm having. I have a 0-5vdc Pressure Xdcr attached to the Voltage input of the PLC. I am using the SCP command to scale the input. Here is a basic layout of my application ; I'll be reading the PT, and I need to capture the highest pressure the xdcr reads, and hold that high pressure reading, then move it to an averaging block and a counting block. I was considering a compare instruction to compare the current scan pressure indication with the last scan pressure, and if the reading is GRT, then update the N7. If it is less, then use the last 'higher' reading, move it to an average and counter. Does this sound right ? If it does, how do I do such a thing ? Anyone have any ideas ? If you need a specific app question answered, feel free to pm me also. I appreciate any ideas you all may have. AI.