HEIDENHAIN TNC 306 Technical Manual - Manual (Page 428)

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TNC 406/TNC 306 2 TNC data interfaces 8-15
2.3.2 Output to external devices
Any external device, e.g. computers, printers, readers and punches, can be addressed via the
interface. For this purpose the TNC has a freely configurable interface mode (EXT) which, within
certain limits, permits any setting of the data format and control characters of the required data
transmission protocol.
The setting selected at the external devices must of course match the TNC. On printers, this is done
by setting the DIP-switches or adjusting the transmission parameters.
Data transfer to a computer requires appropriate data transfer software. HEIDENHAIN offer their
TNC.EXE data transfer software for this purpose, which permits transfer between TNC and a PC
using a fixed transmission protocol.
2.3.3 Communication between TNCs
For certain applications, it is necessary for TNCs to be able to exchange data or to communicate
with each other. The RS-232-C interface enables this type of communication.
The simplest form of data exchange is the transfer of files (e.g. NC programs) from one TNC to
another. To do this, the same transmission format (ME mode) must be set at both control units and
transfer started. Be sure that the control receiving the data is started first.