2. Commissioning Parametrisation of the diagnostic memory A maximum of 40 diagnostic messages can be saved in the diagnostic memory. Using the handheld (CPX−MMI) or the Festo Maintenance Tool (CPX−FMT), you can parametrise, among other things, which messages are saved and how the messages are saved. Choose, for example, the memory duration or the diagnostic memory mode (Entries remanent at Power ON") or the memory procedure (Run/Stop" setting). A short explanation of the major settings can be found in the following sections. You can obtain further information in the description for the CPX−MMI or −FMT. Memory duration or diagnostic memory mode (Trace parameters" > Entries remanent at Power ON" or Diag.Buffer Mode"): Active" or remanent": The diagnostic messages remain saved when the operating voltage is switched off or after a power failure. Inactive" or not remanent": The diagnostic messages are lost after the operating voltage is switched off or after a power failure. Memory procedure (Trace parameters" > Run/Stop 1" or Diag.Buffer Mode"): Save first 40 entries" or Stop after 40 records..." (Stop after 40 entries...): The bus node saves the first forty diagnostic messages. Additional, subsequent messages are not saved. 2−58 Festo P.BE−CPX−PN IO−EN en 1008b 2. Commissioning Save last 40 entries" or Record continually...": Continuous saving of the diagnostic messages. After the 40th message, the oldest message will be overwritten. Fault end filter (Trace parameters" > Fault end filter" or Diag.Buffer Error end") Select whether a rectified fault (Outgoing fault") is to be recorded in the diagnostic memory: Record outgoing faults" or Record coming/going" (Record incoming/outgoing faults): When a fault occurs and is eliminated, the error number and the time of the event are recorded. Do not record outgoing faults" or Record coming only" (Only record coming faults): Only when a fault occurs are the error number and the time of the event recorded. If the fault is eliminated, the time of the event will not be recorded. Festo P.BE−CPX−PN IO−EN en 1008b 2−59