building a text file in rs logix 5000

[plcjunior]

I have an application where i need to create a text file to send to a servo drive. I am using a control logix plc to do this application and i am using rs logix 5000 program software as well. Is there a way of creating a text file inside of rs logix 5000. to give an example:

using ladder logic, to move data to this to text file i want to create and then be able to send this text file through my ascii port to the servo drive.

any help would be appreciated!!
thanks

 

[jonesy29847]

I had an application where I had to create strings in the RLL. I used Structured Text to create contants, my tag names were the letter preceeded by an underscore.

_A := 65;
_B := 66;
_C := 67;
etc

Some specials I needed were.
STX := 2;
ETX := 3;
CR := 13;

I wrote an ST routine that would concatenete strings together.

I also set up several strings that I needed specifically for the device, the example below requests status from the device <STX>S010<ETX>.

The tag structure for those would be like this;

sGetStatus.Data[0] := STX;
sGetStatus.Data[1] := _S;
sGetStatus.Data[2] := _0;
sGetStatus.Data[3] := _1;
sGetStatus.Data[4] := _0;
sGetStatus.Data[5] := ETX;
sGetStatus.LEN := 6;

Everything I did could have been done in ladder, but ST programming made it easier to read, and keeps the code protected from thos who shouldn't change it.