HEIDENHAIN TNC 306 Service Manual User Manual
Page 62

SERVICE MANUAL TNC 306/360
Page 55
HEIDENHAIN Service
14.4 Machine Parameters for the RS-232-C-/
V.24-Interface
The detailed functions of the machine parameters are explained in the TNC-Manual for
Machine Tool Manufacturers and in the information on the data interface RS-232-C-/V.24
In the operating modes ME and FE the interface parameters are fixed. In the EXT
operating mode, the machine parameter values for the data interface that are preset by the
control can be altered.
14.4.1 Machine Parameters for "Standard Interface"
(e.g. for ME 101,
Printer)
MP
Function
Entry Values
Control character for end of program
7 data bits, transfer stop by DC 3
parity bit (even parity), 1 stop bit
Standard data interface
3 = ETX
168
0
14.4.2 Machine Parameters for "Transfer Blockwise"
MP
Bit
Function
Entry Values
0...7
8...15
ETX or any ASCII character. Character for end of
program
STX or any ASCII character. Character for
program start
ETX and STX:
515
0...7
8...15
H or any ASCII character. Is transferred in the
command block for data input before the
program number.
E or any ASCII character. Is transferred in the
command block for data input after the program
number.
H and E:
17736
0...7
8...15
H or any ASCII character. Is transferred in the
command block for data input before the
program number.
E or any ASCII character. Is transferred in the
command block for data input after the program
number.
H and A:
16712
0...7
8...15
ETB or substitute character. Is sent at the end of
the command block.
SOH or substitute character. Is sent at the
beginning of the command block.
ETB and SOH:
279
0...7
8...15
ACK or substitute character for pos.
acknowledgement. Is transferred, after the data
block was received correctly.
NAK or substitute character for neg.
acknowledgement. Is transferred , if the data
block was received defectively.
ACK and NAK:
5382