PC Control / Profi Control 645-12M Instruction Manual pdf - Kuhnke

4.10.5. Hierarchy error (failure #9)
PC Control 645-12M used as PLC
Program calls and other module calls must not exceed certain
hierarchy limits (see chapter "3. Software modules" of
programming manual E 417 GB).
During programming, the controller reports a hierarchy error
when it receives a program. At this stage, this is only a
warning that there could be an error. Only at start-up does
the controller check whether there really is a hierarchy error.
If there is not, the error indication disappears again.
Cause
Reaction
Indication
Remedy
When switching the controller on or after the KUBES start
command, the monitor program checks whether there is a
hierarchy error (a module calls up the module by which itself
was called up or the nesting depth exceeds 5 levels)
-- the controller will not start
-- "failure" LED flashes (if exists)
-- error byte "ERR00.00" will be set to 9
-- find and remove the cause of the error
-- use the Transmit command of the KUBES PLC menu to
tansmit the project again to the controller
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