GE PAC8000 series User Manual

Contents

GE PAC8000 series User Manual Manual pdf 42 page image

Contents42 PAC8000* IO PROFINET Scanner User’s Manual–September 2017 GFK-2839B4.2.2 PROFINET DiagnosticsThe PNS reports its own non-fatal errors and errors on modules using PROFINET Diagnosisor PROFINET Pull/Plug alarms.4.2.2.1 PROFINET Diagnosis AlarmsDiagnosis Alarms indicate any fault conditions other than a module add, loss, or mismatchthat a PAC8000 PROFINET Scanner needs to communicate to the PROFINET IO-Controller.Most faults generate Diagnosis alarms. Situations that do not send a PROFINET Diagnosisare covered in a later section.When the PAC8000 PROFINET Scanner detects a fault condition, it sends a Diagnosis alarmto the IO-Controller. If there is an Application Relationship (AR) currently active, the PAC8000PNS sends the Diagnosis alarm over that AR. Otherwise, the alarm is placed in diagnosismemory in the PNS to be read later, and no alarm is sent. The Scanner’s FAULT LED is ONand the FAULT status bit (see bit definitions of PNS status register mentioned earlier in thischapter) is set to 1. An alarm is not generated on subsequent connections.The PNS automatically clears (and sends Diagnosis Disappears alarms for) these diagnosisfaults after the fault condition has been corrected. If no additional conditions exist in memory,the FAULT LED is turned OFF and the FAULT status bit is set to 0.The table on the next page lists the faults reported to the IO-Controller. The PAC8000 PNSgenerates all of its application faults as channel diagnosis faults. The AlarmType is DiagnosisAppears or Diagnosis Disappears. The left column lists the Channel Error Type inPROFINET.