5. Programming on the device5.4 Working with contacts and coils5.4.2 Changing an N/O contact to an N/C contactDANGERPersons, systems and machines may be put at risk if an N/C contactis misinterpreted. When using N/C contacts in the program alwaysevaluate the PRSNT and DIAG diagnostic bits of this module.You can define each contact in the circuit diagram as a N/O or N/C.Switch to Entry mode and move the cursor over the contact name.Press the ALT button. The N/O contact will change to a N/C contact.Press the OK button 2 × to confirm the change.Figure 79: Change contact I 03 from N/O to N/CBear in mind that the active state of an N/C contact is 0. The 0 state of a contact may,however, be present if the station is missing or is operating incorrectly. The use of anN/C contact in the circuit diagram without evaluating the diagnostics bit may causeincorrect interpretations.easyE4 11/18 MN050009 EN www.eaton.com 135
