Micrologix 1400 Data File Question....

JoseM · May 9, 2012

I will like to ask a question to anyone who has experience with Micrologix 1400. I'm working on the PLC code and I added the unit to the I/O configuration but here is where I'm confuse.

The processor I have is the 1766-L32AWA which comes with 20 AC inputs and 12 relay outputs. When I looked under the "Data File" for the inputs it shows I:0.0/0 .... 15 on the first line and there are various lines from I:0.1 .... I:0/7

I'm confuse because I don't understand how that relates to the 20 physical inputs on the 1400

bernie_carlton · May 9, 2012

On some Micologix 1400 units analog Inputs and Outputs are available.

Input words I:0.4,5,6 and 7 reflect the 4 analog input points.

Output words O:0.4 and 5 reflect the 2 analog outputs

Ignore the other points in the lower word which don't corespond to the inputs and outputs you know.

kolyur · May 9, 2012

I:0.0/0 through /15 are the first 16 digital inputs. I:0.1/16 through /19 are the remaining four. As Bernie mentioned, the data files are set up to accommodate all variations of the 1400 and not all words will be used in your case.

JoseM · May 9, 2012

Thank you for the reply. The 1766-L32AWA doesn't contain any analog input or outputs. Could you explain to me how the 20 physical inputs are going to be represented in the Data File.

Eric Nelson · May 9, 2012

Also keep in mind that you can use two types of addressing, bit or word.

As an example, here are your inputs with their equivalent 'bit' and 'word' addresses. It's up to you which method you prefer to use.

           Bit     Word

          -----   -------

Input 0   I:0/0   I:0.0/0

Input 1   I:0/1   I:0.0/1

Input 2   I:0/2   I:0.0/2

Input 3   I:0/3   I:0.0/3

Input 4   I:0/4   I:0.0/4

Input 5   I:0/5   I:0.0/5

Input 6   I:0/6   I:0.0/6

Input 7   I:0/7   I:0.0/7

Input 8   I:0/8   I:0.0/8

Input 9   I:0/9   I:0.0/9

Input 10  I:0/10  I:0.0/10

Input 11  I:0/11  I:0.0/11

Input 12  I:0/12  I:0.0/12

Input 13  I:0/13  I:0.0/13

Input 14  I:0/14  I:0.0/14

Input 15  I:0/15  I:0.0/15

Input 16  I:0/16  I:0.1/0

Input 17  I:0/17  I:0.1/1

Input 18  I:0/18  I:0.1/2

Input 19  I:0/19  I:0.1/3

Your local I/O are considered 'slot 0', so the input addresses will all start with I:0/... If you added additional I/O, those would get assigned as slot 1, slot 2, etc. and would be I:1/..., I:2/... etc.

-Eric

JoseM · May 9, 2012

Thank you for the clarification. So, the data files are set to a standard configuration in order to work for the entire Micrologix family.

Eric Nelson · May 9, 2012

When you have a data file open, hover your mouse over each register. It should show you the equivalent 'bit' version of the address.

-ERic

Micrologix 1400 Data File Question....

JoseM

Member

bernie_carlton

Lifetime Supporting Member + Moderator

kolyur

Lifetime Supporting Member + Moderator

JoseM

Member

Eric Nelson

Lifetime Supporting Member + Moderator

JoseM

Member

Eric Nelson

Lifetime Supporting Member + Moderator

Similar Topics