HEIDENHAIN TNC 155 F - M-, S-, and T-Functions, Strobe Signals and Feedback Signal

3.3 Feed rate release
Input PLC-Allocation
TNC 151 B/TNC 155 B TNC 151 Q/TNC 155 Q
Multipoint connector Multipoint connector
PLC-Power board
“Feed rate release”
El8 J 516
J 515
By opening the input “feed rate release”,
the speed can be ramped down to zero at (any time, by means of the
“machine acceleration” which is entered as a machine parameter during initial dialogue entry.
If the input “feed rate release” has been opened, this is indicated in the status display by the letter F (inverted).
3.4 M-, S- and ‘T-functions, Strobe signals and feedback signal:
“Auxiliary function completed”
In/Output
Coded outputs
M, S and T
Bit 1 . . . 20
2 . . . 2’
3 . . . 22
Decade 1
4 . . . 23
5 . . . 20
6 . . . 2’
7 . . . 22
8 . . . 23
Decade 2
Decoded outputs
M 03 Spindle cw
M 04 Spindle ccw
M 05 Spindle stop
M 08 Coolant ON
M 09 Coolant OFF
Gating signals
S-Strobe
M-Strobe
T-Strobe
Input: “Auxiliary function
completed”
PLC-Allocation
A7
A8
A9
Al0
All
Al2
Al3
Al4
Al5
Al6
Al7
Al8
Al9
A20
A21
A22
El7
TNC 151 B/TNC
155 B
Multipoint connector
J 212
J 213
J 214
J 215
J 216
J 217
J 218
J 219
J 2llO
J2ll-l
J 2112
J 3/l
J 312
J 313
J 314
J 315
J 5l7
TNC 151 Q/TNC 155 Q
Multipoint connector
PLC-Power board
-
J II8
J II9
J Ill0
J Ill1
-
J 2/l
J 212
J 213
J 214
-_
J 2l5
J 216
J 217
J 218
J 219
-
J 2110
J 2/l 1
J3ll
-
J 516
-
M-, S- and T-functions are provided statically via the same relay outputs of the control. To differentiate
whether an M-, S- or T-function is at the output, pulsed strobe signals “M-Strobe”, ‘S-Strobe” and “T-Strobe”
are used.
Via machine parameter MP 214 it can be determined as to whether a brief axis standstill occurs with a
change of spindle speed during a constant positioning procedure.