HEIDENHAIN TNC 155 W - Output of T-Functions

3.4.2.1 Output of T-functions (tool numbers and tool store numbers)
The T-Code is provided as a static signal. The impulse duration of the T-gating signal is determined by
machine parameters 120 and 121 (compare 3.4.1 Output of M--functions). After duration of the time period
programmed with 122, the control input is interrogated for the feedback signal: “Auxiliary function completed”.
When this input is at + 24 V the T-code signals are cut-out and the program resLlmed. If the input is inactive
(at 0 V) the T-signals are output and program run is interrupted until the input is re-activated (at + 24 V).
The TNC 1 tSl/TNC 155 permits programming of tool numbers from 1 to 254. The tool numbers 1 - 99 in
8-4-2-BCD-code are only output in the programmed tool call blocks; for tool numbers and tool store numbers
greater than 99, all 8 output relays pick-up. In addition to the tool number, the tool call block contains the
data for the spindle speed S.
17