HEIDENHAIN TNC 128 (77184x-01) - Manual (Page 346)

346 MOD functions
14.4 Set
ting the data int
e
rf
aces
14.4 Setting the data interfaces
Serial interfaces on the TNC 128
The TNC 128 automatically uses the LSV2 transmission protocol for
serial data transfer. The LSV2 protocol is permanent and cannot be
changed except for setting the baud rate (machine parameter
baudRateLsv2
). You can also specify another type of transmission
(interface). The settings described below are therefore effective only
for the respective newly defined interface.
Application
To set up a data interface, select the file management (PGM MGT) and
press the MOD key. Press the MOD key again and enter the code
number 123. The TNC shows the user parameter
GfgSerialInterface
, in which you can enter the following settings:
Setting the RS-232 interface
Open the RS232 folder. The TNC then displays the following settings:
Setting the baud rate (baudRate)
You can set the BAUD RATE (data transfer speed) from 110 to 115 200
baud.
Setting the protocol (protocol)
The data transfer protocol controls the data flow of a serial
transmission (comparable to MP5030 of the iTNC 530).
Here, the BLOCKWISE setting designates a form of data
transfer where data is transmitted in blocks. This is not to
be confused with the blockwise reception and processing
of data by older TNC contouring controls. Blockwise
reception of an NC program and simultaneous machining
of the program is not possible!
Communications protocol Selection
Standard data transfer STANDARD
Packet-based data transfer BLOCKWISE
Transmission without protocol RAW_DATA