HEIDENHAIN iTNC 530 Service Manual page 255

PLC outputs When checking the PLC outputs, proceed as follows:
 Switch off the main switch of the machine.
 Connect the universal measuring adapter to connector X41 or X46 between the MC and the
connecting cable.
 Press the following key combination:
The displayed logic states must be in agreement with the voltage levels for each output.
If you find a difference between them:
Check that there is no short circuit in the connecting cable and measure the output current for
this output.See section "Specifications" on page 251 If the output current is not exceeded and
the cable is Ok, then the output board of the MC or the PL 405B/410B I/O unit is defective.
July 2002
Note
The voltage levels for the PLC inputs or the output current for the PLC outputs on the
PL 405B/410B must be measured directly at the corresponding terminal.

Select the Programming and Editing mode.
 Prepare iTNC for entry of code number.
 Confirm.
 Call TABLE function.
 Display table for outputs.

Press the END key twice to end the TABLE function and exit the Programming
and Editing mode.
 Enter the code number.
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