HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 667)

8-20
TNC 407/TNC 415/TNC 425 2 TNC data interfaces 01.98
MP7228 Storage requirement in drip feed mode
Entry range: 0 to 1024 KBytes
MP7228.0 Minimum storage
MP7228.1 Maximum storage
2.4.4 Communication between TNCs
For certain applications, it is necessary for TNCs to be able to exchange data or to communicate
with each other. This is made possible by both RS-232-C/V.24 and RS-422/V.11 interfaces.
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 must be set at both control units and transfer
started. It must be ensured that the reading-in control unit is the first to start.
For the application "Positioning module", i.e. further NC axes are required, the positioning values
have to be transmitted from the master logic unit to the slave logic unit. On this basis, data can be
transferred to another TNC via the data interface, using PLC modules at the PLC level (see Section 5
"Data transfer via PLC").