HEIDENHAIN TNC 335 Technical Manual - Manual (Page 546)

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TNC 360 4 Data transfer with BCC 8-39
4.1.5 Reading in all programs
In this case the TNC sends a header without a program name, and the peripheral unit sends the first
file. The TNC again outputs a header without a program name, the next program is sent and so on.
Peripheral unit
.
.
.
BCC
Transmission path TNC
.
.
.
1st line PGM1 BCC
Last line of last file
BCC
BCC
.
.
.
Last line PGM1 BCC
.
.
.
BCC
If the control is set to ISO programming, the central tool file (if activated via machine parameters)
will also be read in.