HEIDENHAIN TNC 620 User Manual page 604

17
MOD Functions
17.10 Setting up data interfaces
Set protocol
(protocol no. 106702)
The data transfer protocol controls the data flow of a serial
transmission (comparable to MP5030 of the iTNC 530).
The BLOCKWISE setting here designates a method
of data transfer in which data is transferred grouped
in blocks. This should not be confused with the
block-wise data reception and simultaneous block-
wise running of older TNC contouring controls. The
block-wise reception and simultaneous running
of the same NC program is not supported by the
control.
Data transmission protocol
Standard data transmission (transmission
line-by-line)
Packet-based data transfer
Transmission without protocol (only
character-by-character)
Set data bits
(dataBits no. 106703)
By setting the data bits you define whether a character is
transmitted with 7 or 8 data bits.
Check parity
(parity no. 106704)
The parity bit helps the receiver to detect transmission errors. The
parity bit can be formed in three different ways:
No parity (NONE): There is no error detection
Even parity (EVEN): Here there is an error if the receiver finds
that it has received an odd number of set bits
Odd parity (ODD): Here there is an error if the receiver finds that
it has received an even number of set bits
Set stop bits
(stopBits no. 106705)
The start bit and one or two stop bits enable the receiver
to synchronize each transmitted character during serial data
transmission.
604
Selection
STANDARD
BLOCKWISE
RAW_DATA
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016