I am using the MD3 with a XA2 and a pair of XS2 modules.

I updated to 4.03 to read a 500 baud vehicle J1939.

Half of the COUTs are disabled with out of range errors. swapping to an MD3 with the old 2.63 program, and its all good (save for I can't read the vehicle's J1939)

One other question; how do I un-update the MD3?

I could not reinstall a 2.63 program on a 4.03 MD3.

I would try uploading a 3.whatever Design program, but I am out of MD3s (have 1@ 2.63, 1@ 4.01 and 1@ 4.03)

Not sure when this started. But I thought that the function group output order on the display was predicted based upon the calculation order. It does not appear that it is the case anymore (Was it ever?). It seems that the Last appears first then the other follow the calculation order. Am I correct?

Here is an example:

This is how the parent group appear:

Thanks.

JMarc

I can not find a way to reset PCC PIN channel back to default. It looks like a bug. Could someone advise if it reset-able?

WHEN SELECTING WHAT TO SHOW IN THE VALUE CONTROL IT WOULD BE NICE TO SHOW THE STATE THAT THE MATH CHANNEL IS IN. THE REASON FOR THIS IS THE SAME AS THE REASON TO HAVE A MODE SELECTOR FOR THE VIN CHANNELS. THIS WOULD ALLOW YOU TO RUN A VIN INTO A MATH CHANNEL THAT HAS A MODE SELECTOR FOR UNITS IN THIS CASE. WHEN THE STATE IS SELECTED AND THE MATH HAS CHANGED THEN THE MODE/STATE IT IS IN CAN BE DISPLAYED AS THE UNIT NEXT TO THE VALUE.

In my fan system we have a gear pump feeding our fan valve which feeds a gear motor. The initial programmer had it set as "Bidirectional: YES" and the positive direction values were as follows:

Min Current: 605 mA

Max Current: 0 mA

Start slope/Stop slope: 250 ms

(The negative direction is just opposite of that, Min: 0, Max: 650)

The valve is programmed to open (allow the fan to go full on, therefore max oil flow) at 0 mA, and otherwise programmed to run according to the cooling demands. But there is no actual negative direction, it is a proportional valve, it's either (somewhat) open or closed so it's 0 to 650.

Sometimes when it's hot outside, the hydraulic oil gets hot and the coil (probably) heats up we get a "FAN SPEED COUT SATURATION" error a few seconds after starting up the machine again. I did some testing and found that if I eliminated the Bidirectional component and made it unidirectional that this problem goes away. It makes sense in my mind as the valve is proportional so why should the program ever look for a negative direction.

Does my logic make sense? Would you ever need a bidirectional Cout for a proportional valve?

Sorry for the long rambling post.

Hi this is my firs time and i have problem with sending.

in order to upgrade the md4-5 to version 4.00 and later the module must first be upgraded to at least version 3.17?

How i do this

My connektion is ethernet cable

I am very unhappy with the inability to import function groups from working IQAN2 code into IQAN4. Atlas Copco has spent multiple man year developing and testing their IQAN2 control applications. I want to be able to take advantage of this as we work towards updating their next gen rig to work under IQAN4. I know I could do this if I was coding in MatLab/SimuLink, C, or C++. I have tried exporting the function groups with references, and without, and all I ever get when I try to import them is the following:

I am aware that the connections to the function group are going to be broken, and will need to be connected appropriately. I should not have to track these down and re-specify/reconnect these, in IQAN2 though, especially when I'm importing the function group from one type of module (MC2) to another (MC3).

By taking this approach IQAN makes code re-use almost impossible. I'm very disappointed

Please fix it.

Some Ideas I have had,

1) It would be nice to justify a comment box to the right. It comes in handy when you want the text to be right next to that function.

2) Error Value for a 2 bit value. It defaults to False, but it would be nice to be able to put (-1). That way in the program I an tell there is an error and do some other code with it.

3) TSC1 SA - Integer Parameter. I saw a post a year ago about adding this to IQAN 4, but it has not been done yet. I was wondering if you knew when I could expect that.

With the new Iqan 4.03.27, the qcode window now re-formats all my code if I try to add some code in it. I never had this issue with 4.02.

Example, I had a functional code, and went to add a variable at the top of the qcode, and it did this.

Has anyone had the need to communicate with Industrial PLC's? The Ethernet port would be the best way to do it if the MD4 could support Ethernet communications with the PLC. It is expensive to incorporate a CAN to Ethernet converter and also it adds another piece of hardware in teh system that you need to mount and support. Is there any plans to add Ethernet communication protocol to the MD4 (other than camera and PC communications?)

Along the same line, has anyone created an EDS document for the IQAN MD3 or MD4 that can be used to set up communications with the Alan Bradley PLC over CAN?