HEIDENHAIN iTNC 530 Service Manual page 116

PLC main page
On this page you see, e.g.:
11 – 116
Which PLC main program is running
Which PLC error table is used
Availability of memory on the PLC partition
The PLC utilization
Note
The processing time of the PLC (time for one PLC scan) 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, also
values considerably higher than 100% may be displayed for the PLC utilization. You do not
have to take any measures!
Only when the permissible PLC utilization is superseded, the error message
PLC: time out --> Contact your machine manufacturer!
The range of non-volatile PLC markers and words (or bytes)
HEIDENHAIN Service Manual iTNC 530