July 2010 24 – 411
Checking the
switches
The function of the selection switches can be checked with the respective PLC inputs. Use the
PLC diagnosis functions TABLE:
8 Switch on the machine.
8 Press the EMERGENCY STOP key.
8 Call the table with the PLC inputs. --> See “The TABLE function” on page 11 – 119.
8 Turn the selection switches.
8 Check whether the corresponding inputs change to 0.
(Assignments --> See tables below)
Assignment of the
switch positions to
the PLC inputs
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 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
Step switch 2: Axis selection switch
Switch position PLC input
1 (at the left stop) I160
2 I161
3 I162
4 I163
5 I164
6 I165
7 I166
8 (at the right stop) I167
Switch position PLC input
1 (at the left stop) I168
2 I169
3 I170
4 I171
5 I172
6 I173
7 I174
8 (at the right stop) I175
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