Micrologix 1200

[paradise1082 0]

I have a 1762-L24BWA and need to know what add-on module to buy to connect an encoder to create a simple cut to length program. This is the first time doing this type of application.

[TimWilborne 108]

It has a built in high speed input for that purpose. Look at the HSC function file.

[paradise1082 0]

Can I still use in 2 and 3 as normal inputs since it is common to 0 and 1 or do I need to jump to 4.

[TimWilborne 108]

Yes, make sure you set your mode to 6 so it is a quadrature counter without external hold and reset. If you were to choose 7, the hold and reset would be on inputs 2 and 3. Just out of curiosity, is this a new application? If so consider the Micrologix 1100 or 1400. Also I hidden setting that often eludes those using the HSC for the first time is the input filters. Go to I/O Configuration on the left pane, double click your base, then go the the embedded I/O configuration tab. These must be lowered on inputs 0 and 1 for must encoder applications.

[paradise1082 0]

This is going to replace a Pro-face application very simple just cut to length. I have a 1200 on the self. What would be the benefits of a 1100 1500.

[TimWilborne 108]

Not the 1500, the 1100 or 1400. They are the more modern controllers of the series that you see installed on new equipment today. The main advantages are online editing and Ethernet connectivity.

[paradise1082 0]

This is a print of the Pro-Face program. I don't have the software to connect and watch. The part I'm not sure about is the multiplier "A" Do you think this is the count of the encoder or a fixed interger. I'm trying to convert to micrologix. I've tried to set this up exactly but then realized I was not looking at the HSC0.ACC so nothing changed.Upload.pdf

[TimWilborne 108]

That is the pulses per revolution of the encoder, of which 1000 is a very common count. The only real "variable" in these numbers is B in the multiply, it is the length entered by the operator

[paradise1082 0]

Yes at B(MUL). Where is it looking at the actual count of the encoder. I had it set up with A(Mul) was the .ACC of the encoder on the micrologix and it did the math. But looking at this I did not think it was right. I want to set up the Micro with the same math so when I swap it will be the same. If A(MUL) is a fixed number then the only time it C(DIV) changes is when the lenght is changed. Unless A(GE) is the .ACC of the Encoder, which does make sense. I'm going to try that.

[paradise1082 0]

Tried and I believe that is it. Thanks for the help.

[TimWilborne 108]

No problem, glad to help.

[paradise1082 0]

Is there a way to connect pc and panelview through the micrologix 1200 channel 0

[TimWilborne 108]

What is the full part number of the Panelview?

[paradise1082 0]

Automation Direct C-more EA7-T6CL-R

[TimWilborne 108]

Yes, you'll need a EA-MLOGIX-CBL to connect them

[paradise1082 0]

I mean at the same time. I have the cable. I want to monitor while connected to C-more. Didn't know If they made a device for it.

[TimWilborne 108]

No

[Michael Lloyd 85]

Which is why we like the 1100 so much :)

[paradise1082 0]

OK I'm using 1100 now it works great but i would like to get the math a little closer. From the PLC that was already there this is what they were doing. Taking the pulse count(2000) multiply by inches typed in by operator then dividing that number buy 4.979. I do not know where they got the 4.979 or if this is even the best way. But I would think there would be some kind of formula. The metal goes between two powered rollers before going to the cutoff and the encoder is on the shaft of the top roller. Can someone give me some guidence on the right math. Here is an example of how it works now. The blank needs to be 33" long so the number inserted by the operator is 32.975. I know this is close but I would like to know where he got the 4.979 for the division.

[Ken Roach 194]

The ratio between the circumference of the roll and the diameter of the roll is "pi", or about 3.14159. Is the top roller about 1.58 inches in diameter ?