6 parentheses with logical gating, 1 and [ ] (a[ ]), 2 and not [ ] (an[ ]) – HEIDENHAIN TNC 407 (243 020) Technical Manual User Manual
Page 541: 3 or [ ] (o[ ]), 4 or not [ ] (on[ ])

3.6 Parentheses with logical gating
Execution time and code length are summarised respectively for the "open-parentheses" and
corresponding "close-parentheses" commands.
3.6.1 AND [ ] (A[ ])
Abbreviation for PLC Editor:
A[ ] (AND [ ])
Logic
Byte/Word/Double
Execution time [µs]
0.6 to 1.2
0.7 to 1.3
Number of bytes
6
6
Operands: none
3.6.2 AND NOT [ ] (AN[ ])
Abbreviation for PLC Editor:
AN[ ] (AND NOT [ ])
Logic
Byte/Word/Double
Execution time [µs]
0.5 to 1.2
0.7 to 1.5
Number of bytes
6
6
Operands: none
3.6.3 OR [ ] (O[ ])
Abbreviation for PLC Editor:
O[ ] (OR [ ])
Logic
Byte/Word/Double
Execution time [µs]
0.6 to 1.2
0.7 to 1.3
Number of bytes
6
6
Operands: none
3.6.4 OR NOT [ ] (ON[ ])
Abbreviation for PLC Editor:
ON[ ] (OR NOT [ ])
Logic
Byte/Word/Double
Execution time [µs]
0.5 to 1.2
0.7 to 1.5
Number of bytes
6
6
Operands: none