HEIDENHAIN iTNC 530 Service Manual page 411

The function of the selection switches can be checked with the respective PLC inputs. Use the
Checking the
PLC diagnosis functions TABLE:
switches
The tables below list the assignments of switch positions of S1 and S2 to the PLC inputs I160
Assignment of the
to I175.
switch positions to
the PLC inputs
The two switches work with a 0 V logic circuit.
Example:
If switch S1 is set to position 3, input I162 is logically 0; all other inputs
are logically 1.
Step switch 1: Step switch for choosing the subdivision 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)
July 2010
Switch on the machine.
Press the EMERGENCY STOP key.
Call the table with the PLC inputs. --> See "The TABLE function" on page 11 – 119.
Turn the selection switches.
Check whether the corresponding inputs change to 0.
(Assignments --> See tables below)
PLC input
I160
I161
I162
I163
I164
I165
I166
I167
PLC input
I168
I169
I170
I171
I172
I173
I174
I175
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