BadgerGuy

The castings really don't burst. they have a small leak and fizzle a bit. the pressure would drop and the pressure difference sensor would post a higher resistance thus fail the casting. I am going to run each test for twenty seconds through a TON and monitor the process by writing to integer files. once the timer times out and no values outside the parameters have been detected the meter will pass. Is there a way to export some of the data from the integer files to an excel spreadsheet? Thanks

Hello, I was asked if it was possible to monitor an analog signal using a slc 5/04. the project would consist of me pressure testing a casting with air. I would load one onto a station, fill it with 300psi wait 30 sec and then fill it with 15 psi. I have a reference volume and a casting that I test. I also have a sensor that will monitor both of the pressures by having two cavities separated by a thin aluminum wall which will produce a resistance equal to the difference in pressure. I was thinking about trying to use an analog input module, and the "scale with Limits" function, create a range the resistance could be in and bring a rung high if a leak was detected from the signal going out of the parameters. I have absolutly no idea it this will work, seeing as I have not yet worked with analog inputs Is this a good method to use in this situation? thanks

I thought of The OSR but the problem is that I need to reset that every minute or so. This is for a test. i am simulating an inductive sensor that triggers a test and I can't have the output high all the time I just need it to send a signal for about a second or so.

When a TON finishes the timing and the DN bit goes true does it stay on until the timer is reset? I need a way to turn a flip switch (toggle) into a momentary. Thanks

What is a Bus? or more importantly what is the difference between Modbus and Fieldbus? I seethat devices boast either one of these capabilites and I really need to know what they are talking about. Thanks Bill

Thanks for the reply. I actually had a solution. I am exactly looking for the conditions of all the inputs when a particular output is true. I have about ten inputs for this particular rung. I was going to create about ten rungs underneath the culprit rung and put one Input on a run causing an integer address to go to 1 when true. Then on the last rung have a "one shot" that will copy that integer file to a different rung when the output file becomes true. I will then have a snapshot of what was true and what was not when that input came on. In your example, I don't really understand how that works. Could you explain a little bit more? Thanks. Bill

How does one write debug code to get a list of energized I/O at a certain point or state of a program?

That sounds like a great idea.. How would I go about doing that? any examples out there? Thanks Bill

Here is a brand new problem dumped on me. We have a large gantry crane that freezes up under certain conditions in a program run off a slc 5/04 with about thirty I/o modules. I have the proble pegged down to three different outputs on card #25. I even have a snapshot of what is true and not true when the fault occurs. Is there a way to get the same snapshot of the logic when it is running in a normal mode at a certain instant in the code. Saving takes a few seconds and by that time the conditions would change. I guess I am looking for some sort of debug mode where I could tell it to save after a certain rung is energized or a certain condition comes true. Is this possible? Thanks.

I understant the rung is infact true in start up. Could I make the counters value -1 at first? thanks

I added a reset to four of my counters but when I press reset, the counter resets to 1 and not 0 how can I get the counter to reset to zero? Thanks

I am trying to communicate to a SLC 5/04 via the PCMK DH+ the Settings I tried Device PCMK Network DH+ Station Name: RSLinx Station #1 Baud Rate 57.6K The Settings they gave me PLC 1747-L42B Driver it was written on AB-PIC-1 (this makes no sense the PIC is and RS232 driver and none is available to use on the SLC 5/04) Chan 0 DH485 Chan 1 DH+ It kept giving me an error that the node was duplicated in the system. Please help I Thanks

It was a mirco logix 1200 I tried right clicking the ladders and no "new" option was available.

What exactly is Compact Logix? I have a controls guy who wants to use it on a new project. While he's selling the idea what are the actual benifits of using that instead of a slc504? Thanks

How can I creat and move certain rungs to different ladders? I would like to break up the code into operations and put each operation on a different ladder. Should I do this for clairity or is there a better way? Thanks.