User Manual

Siemens Building Technologies VISONIK DCS Functions and System Messages VVS18 CM2U8567E / 04.1999
Landis & Staefa Division System Messages --- DCS Messages 3-41
Diag xx = yy [at line zz]
TSKx 00:00:00
Diag xx = yy [at line zz]
->MSGDEV (M.CBDG)
[at line zz]
does not always appear.
An active COLBAS task has made an illegal process image access (e.g., due to
incorrect programming).
Illegal process image accesses could be:
–
Access to unknown (e.g., not generated) points
–
Access to an unknown parameter.
If the system variable SYSDIAG=1, a diagnostic message is output where TSLx is the
COLBAS task no., xx is the error number and yy is the associated clear text. If
SYSDIAG=0 then the message is suppressed.
The running task is not stopped if it attempts an illegal process image access. The
program simply continues to the next COLBAS statement.
The task skips over illegal write accesses to the process image.
Illegal write accesses to the process image generate the value 0. For example, an
attempt to read an unknown parameter and then assign it to a variable generates a
variable value of 0.
Correct the relevant COLBAS task.
Explanation
Action