Black Box 232 Monitor Plus, Инструкция по установке и эксплуатации, Страница: 38 / 45

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APPENDIX B: Nonprinting ASCII Codes
Key Abrv. Name Description
16 P DLE Data Link Escape Shifts into a different set of control
codes.
17 Q DC1 Device Control 1 A variable.
18 R DC2 Device Control 2 A variable.
19 S DC3 Device Control 3 A variable.
20 T DC4 Device Control 4 A variable.
21 U NAK Negative ACK Used by remote to answer Negative to
host. Opposite of ACK.
22 V SYN Synchronous Idle Used as a “pad” in certain types of
synchronous serial transmissions.
23 W ETB End Trans. Block Signals end of block sent by host.
24 X CAN Cancel Disregard last line of data and return to
mutually agreed restart point.
25 Y EM End of Medium Signals last character on this medium.
26 Z SUB Substitute Sometimes used as a fill character in
fixed-length fields; also used to indicate
garbled data.
27 [ ESC Escape Often used to break a transmission or
to introduce special sequences of
control characters.
28 \ FS File Separator Allows files to be sorted by character
lower than “space” in collating
sequence.
29 ] GS Group Separator Similar to FS.
30 = RS Record Separator Similar to FS.
31 - US Unit Separator Similar to FS. Lowest order of
separators, not counting SP.