HEIDENHAIN TNC 335 Technical Manual - Manual (Page 501)

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TNC 360 5 Compatibility with TNC 355 8/95
5.1 PLC Program conversion
PLC programs created for the TNC 355 can also be used on the TNC 360.
When these PLC programs are downloaded to the TNC 360 the following command codes are
automatically modified:
U
→
A
UN
→
AN
E
→
I
A
→
O
Z
→
C
An EM block is automatically appended at the end of the PLC program.
The programmer must ensure that the PLC program starts with a logic sequence.