11 – 116 HEIDENHAIN Service Manual iTNC 530 HSCI
PLC main page
On this page you can see, e.g.:
Which PLC main program is running.
Which PLC error table is used.
The size of vacant memory on the PLC partition.
The range of non-volatile PLC markers and words (or bytes)
The PLC utilization
The processing time of the PLC (time for one PLC cycle) is given as a percentage:
100% is the equivalent of a run time of 1 ms at a cycle time of 21 ms.
Depending on the currently running machine functions and the PLC program used, values
considerably above 100% may be displayed for the PLC utilization. You do not have to take
any action!
Only when the permissible PLC utilization is exceeded, is the error message PLC: time out
displayed. --> Contact your machine tool builder!
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