HEIDENHAIN TNC 306 Technical Manual - Manual (Page 447)

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TNC 406/TNC 306 4 Data transfer with BCC 3/97
4 Data transfer with BCC
4.1 General
HEIDENHAIN TNCs, as well as allowing data transfer with the standard data transmission protocol,
also allow data transfer with a Block Check Character (BCC).
This protocol is only set in FE1 mode:
In the following, the transmission protocols are listed for the various file input and output
possibilities. In FE1 mode, a command sequence which requests the directory from the peripheral
device is automatically output at the start if the function "Download selected program" was selected.
If an error occurs at a peripheral device, the following block must be sent to the TNC.
"Error text"BCC
Peripheral unit
"Error" BCC
Transmission path TNC
The received error message is displayed in the TNC, but can be acknowledged and erased with the
CE key.