SLC5/05 error fault

[gromit 4]

Experienced a processor error/fault on SLC5/05.

Major Error S:6=20h

Error Description: A minor error bit is set at the end of the scan.

Narrowed it down to program, but can't find the culprit.

I added  OTU S:5/0 to end of program, which allowed the error to clear and the processor to begin running/executing again.

What are the boundaries, or min & max values for integers and floats???

Thanks!

[mikey431 3]

it seems you have math overflow trap in your program and sometimes it is not easy to troubleshooting . For me, going online and  test to eliminate  suspiciously logic  one by one  work best.  

I think you also need to reset the S:1/13 also so the program can continue run ,I would reset S:5/0  and S:1/13 if you just simply  want the program to run and ignore the error . However, this does not fix the issue that you have overflow in the program.

the signed integers are 16 bit so it  has range  -32,768 or 32,767

for the floating points, there are more to it .The discussion is  here you can check it out

 http://forums.mrplc.com/index.php?/topic/16332-slc-500-floating-point-limit/

 

Hope this helps!

Edited 12 Jan 2016 by mikey431

[gromit 4]

Much appreciated Mikey.

I believe also that it is a math overflow error, but am unable to find the culprit.

The program is running after adding the S:5/0 OTU to the end of the program.

I saved the program and data table values, and am looking through it now.

Thanks for the equivalent ranges which I will use up against all values in the subroutine that is causing the error.

Much appreciated!!!

[gromit 4]

Mikey,

I looked through the entire LAD52 routine, and didn't see anything obvious.

I attached the PDF of the subroutine/program to see if maybe you could spot something.

Thanks.

CAL86246_LAD52_160112.pdf