REAL tag weird problem

Hi All,

KRC2
KSS v5.5

I have been using REAL variables defined as an array of 2 in $config.dat.

DECL REAL A_ANG_OFST_A[2]
A_ANG_OFST_A[1]=-44.4099998
A_ANG_OFST_A[2]=0.0

DECL REAL A_ANG_OFST_B[2]
A_ANG_OFST_B[1]=44.4099998
A_ANG_OFST_B[2]=0.0

I am using these variables as an offset to manually input some values to offset the angle of the robot during a calculated motion. These variables are not set anywhere in the program. In order to value them, either I have to use teach pendant variable screen or to change it manually in config and copy the file in the robot. Initially the values set were 0 in these variables.

Yesterday, the customer had reported that there was a collision on the robot because of the value as can be seen in the above parameters. I triple checked robot code and found that whatever I stated is true and there is no way the values can be changed in the robot program. I asked customer if anybody changed these parameters and got reply that they do not know about these parameters and never altered them.

I also asked the customer to check these parameters on the robot this morning and the value got changed to 0.15 and -0.15 automatically (Please see attached screenshots).

I am failed to understand how come these values are getting changed by themselves without any intervention (human or program).

I request you all experts to throw some light on this issue.

Thanks

Sirs,

I checked the logs and couldn't find anything getting written on these variables. I am more than 100% sure of this that the values are not getting changed at program level. However, I cannot say the same for human intervention as I am not on site and the issue is reported by the customer who already denied of any claim of changing these values.

I like the idea of changing these tags to constants but I am unable to understand why these tags have values other than zero if they were defined in $config with value 0 and not being changed anywhere.

Can KSS behave in a weird way with REAL variables?

Thanks

Quote from panic mode

You are the programmer..
You chose to declare them as - variables.
By definition variable is something that can change value...
Variables declared I $Config.dat are global and can be accessed and changed by anything and anyone.

I understand this. I consider to change these variables to constants at next available opportunity.

Quote from panic mode

Someone denies involvement in something that went wrong... What a shocker....

What can we do....Customers are like this many a times...