Assignment Of Switch Positions To Plc Inputs - HEIDENHAIN TNC 426 PB/M Technical Manual

Assignment of
switch positions to
PLC inputs
6 – 386
The tables below list the assignments of switch positions of S1 and S2 to the
PLC inputs I160 to I175.
The two switches work with a 0 V logic circuit.
Example: If switch S1 is in position 3, input I162 is logically 0, and the inputs
I160, I161, I163 to I167 are logically 1.
Step switch 1: Step switch for choosing the interpolation factor
Switch position
1 (at the left stop)
2
3
4
5
6
7
8 (at the right stop)
Step switch 2: Axis selection switch
Switch position
1 (at the left stop)
2
3
4
5
6
7
8 (at the right stop)
PLC input
I160
I161
I162
I163
I164
I165
I166
I167
PLC input
I168
I169
I170
I171
I172
I173
I174
I175
HEIDENHAIN Technical Manual TNC 426, TNC 430