8 – 22 HEIDENHAIN Technical Manual TNC 426, TNC 430
Output selected file The EXT1 operating mode is set with software handshake.
The TNC outputs all of the program lines in order.
The peripheral unit can:
n Stop transmission with <DC3>
n Resume transmission with <DC1>
Read-in selected file The EXT1 operating mode is set with software handshake.
To read-in a file from a peripheral unit:
7
77
7 Enter the file name in the TNC.
The TNC can:
n Stop transmission with <DC3>
n Resume transmission with <DC1>
If the file name in the first line and the name indicated in the TNC are not
identical, the TNC reads each block in and searches for the correct file name.
If the END PGM block has been read in, and the selected name is not known,
the TNC remains static without an error message:
7
77
7 In this case, terminate transfer with the END key.
TNC to peripheral Peripheral to TNC
<NUL> <NUL> <NUL>...
1st line of file <CR> <LF>...
5th line of file <CR> <LF> Transmission stop: <DC3>
Resume transmission: <DC1>
6th line of file <CR> <LF>...
Last line of file <CR> <LF>
...
TNC to peripheral Peripheral to TNC
100.H “START”
<DC1> <NUL><NUL>
1st line PGM100<CR><LF>
...
Last line PGM 100 <CR><LF><ETX>
<EOT>
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