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brute force.....0000 to 9999 hope you are being paid by the hour

a lot better

no it was word 2007....I shan't be using that in the future to translate..but anyway Vi ses I shall be starting a thread on how the recession is affecting engineering...mayby you like to pass some comments?

sorry it's spoused to say see you around....

ok...thanks for the welcome...I'm sure we'll meet again in the halls of the forums Se dig omkring

Yes …all I was trying to say and possibly not very clearly is that the 4mA should be reflected as zero in the software ….so no flow would be anything less than 4mA…. but yes you have given me some food for though...thanks

I’m sure your language skills are much better than mine…at the end of the day we are just trying to help each other

Yes it’s nice to see a reference.....I have worked on equipment that is particularly noisy and signals that sit near the 0 mark I find very noisy and unreliable …especially when it comes to inverters and cable runs of several meters…also know as ground noise… I would suggest people give the...

yes just had a look at the 0-4mA ...there is some non linear region in the transistor

well there is an interesting point of view....4mA to supply the electronics...and never any noise problems at 0 mA...I suggest you do a google on the merits of the 4 to 20 mA signal not that i'm suggesting that you are wrong...you might well be measuring something that is course in nature....but...

yes it would ...but then you would have to know the current to thermal characteristcs of the motor..which is also related to time......and that relationship is most likely not linear.....so to get a true relationship you would use a look up table to plot the thermal characteristcs or you would...

4mA ....should be scaled to 0 20mA.....should be scaled to full scale signals below 4mA have electrical noise and is unreliable....this is an industry standard hence 4 to 20 mA.....?????

you should try and find root cause ...seperate the problem into two groups software and hardware.....you could measure the encoder with a scope ....or view it in the plc... or you could raise an invoice and I'll come over and sort it out for you?

to detect directional rotation you need a minimum of two sensing devices. They should both produce a square wave You want the square wave to overlap..say by 90 degrees In the software you want to detect the falling and rising edges Call it sensor A and B If sensor A has a rising edge and then...