HEIDENHAIN MANUALplus 620 Technical Manual page 1784

Output selected file
Load selected file
1784
The serial interface uses software handshake.
The control outputs all of the program lines in sequence.
The peripheral device can:
Stop transmission with <DC3>
Resume transmission with <DC1>
Control to peripheral device
<NUL> <NUL> <NUL>...
1st line of file <CR> <LF>...
5th line of file <CR> <LF>...
6th line of file <CR> <LF>...
Last line of file <CR> <LF>
The serial interface uses software handshake.
To transfer a file from a peripheral device:
 Enter the file name in the control.
The control can:
Stop transmission with <DC3>
Resume transmission with <DC1>
Control to peripheral device
100.H "START"
<DC1>
<EOT>
If the file name in the first line and the name indicated in the control are not
identical, the control downloads each block and searches for the correct file
name. If the END PGM block has been downloaded, and the selected name
has not been found, the control stops transfer without an error message:

In this case, terminate transfer with the END key.
Peripheral device to control
Transmission stop: <DC3>
Resume transmission: <DC1>
...
Peripheral device to control
<NUL><NUL>
1st line PGM100<CR><LF>
...
Last line PGM 100 <CR><LF><ETX>
HEIDENHAIN Technical Manual MANUALplus 620