HEIDENHAIN TNC 335 Technical Manual - Manual (Page 533)

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TNC 360 2 TNC data interfaces 8/95
For the control characters for the data transmission protocols (<SOH> <ETB>, <STX>, <ETX>,
<EOT>, <ACK> <NAK>), any other ASCII characters can be chosen using the following machine
parameters (for table of ASCII characters, see Appendix). If these machine parameters are loaded
with a zero, the standard settings given in brackets are active (as for FE operation).
Two control characters are encoded in one machine parameter.
The input is as follows:
Input value Decimal code (1st control character) + 256 * Decimal code (2nd control character)
MP5010
MP5010.0
Control characters for data transmission protocol
1st control character for End of Text (ETX)
2nd control character for Start of Text (STX)
Input range: 0 to 32 382
MP5010.3 1st control character for End of Transmission Block (ETB)
2nd control character for Start of Heading (SOH)
Input range: 0 to 32 382
MP5010.4 1st control character for "Acknowledgment of reception" (ACK)
2nd control character for Start of Heading (SOH)
Input range: 0 to 32 382
MP5010.5 Control character for "End of Transmission" (EOT)
Input range: 0 to 32 382
Example: The following ASCII characters are to be transmitted for start and end of text:
End of text:
? = 63 dec
Start of text: ! = 33 dec
Input:
MP5010.0 = 63 + 256 * 33 = 8511
When selecting ASCII characters, it must be ensured that the control characters are not arbitrarily
mixed and that no figures or letters which occur in the transferred text are used.
For the file type, when transferring with Block Check Characters (see Section 2.3.1 "Saving/reading
files"), an ASCII character must be entered for the file which is being output or input. With an input
value of zero, the TNC automatically enters the correct type of file in the file header.