User´s Manual - I+ME ACTIA GmbH

Launch Service Diagnostic Online
Choose menu item Commands | Diagnostics to open the Online Diagnostic Launch dialog as shown
below. As an Online Control window there is no need to close the window to work on. Just shift it aside
to have a free view on the main application and shift it back when it is needed again.
This dialog allows launching a diagnostic service in accordance to the settings that have been done
offline before. See Diagnostics for details about the setup of the Main Diagnostic Launch Table and so
the Online Diagnostic Launch dialog.
Click on the launch button to transmit the displayed service. If periodic transmission of the service is
adjusted the Launch button turns into a Stop button.
Press the Stop button to stop the transmission. The Stop button turns back into a Launch button.
Note: All diagnostic services are sent out as USDT (Unacknowledged Segmented Data Transfer)
requests.
Note: The filter has no influence on the transmission of frames by CAT including the launch of
diagnostic services.
Note: When going diagnostic online the Online Diagnostic Launch window is opened automatically.
According to GMLAN the following services require a tester present service. For these services the box
under "Tester Present" on the left side of the dialog should be marked if not otherwise required for
testing purposes.
- ($AA) Read Data by Packet Identifier,
- ($AE) Device Control.
- ($27) Security Access,
- ($10) Initiate Diagnostic Operation,
- ($28) Disable Normal Communication,
CAT sends out the tester present service automatically just before the wished service and then every 2
seconds (may vary, depending on the bus traffic) when Tester Present box has been marked before in
Offline or Diagnostic Offline mode.
The tester present service is sent until either the Service Return to Normal Mode is sent or when
changing into Offline respectively Diagnostic Offline Mode.
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