I'm working on a Perkins Tier IV Final engine installation. We're using J1939 to drive a PV450.
I need to drive an image widget for a malfunction indicator. I believe it's a DM1 parameter. Reference the attached file; we turn on the Warning Lamp when DM1.LampStatus variable is 1. We turn on the Stop Lamp when DM1.LampStatus variable is 2. How do I know what to set DM1.LampStatus to for the Malfunction Indicator Lamp to be displayed?

Hello hhhenke,

It depends on what your configuration does with the lamp status bytes, in particular the SPN 1213 bits/Malfunction Indicator.

If you are using an unmodified Murphy Standard from 2.7, it looks to me that when the display receives 01b in the SPN 1213, it will show the yellow overlay and icon.

If you have a custom configuration, then you still might not need to do anything if you just want the yellow/warning overlay to popup. In your config, go to the Applications tab, Diagnostic Messages application. If the DM Lamp Setup does not have the Standard DM Lamps checked, this is the same behavior as the Murphy Standard lamp.

If your config is using the Standard DM Lamps, you will need to find the state machinge/script that is parsing the lamp status bits and add the SPN 1213 bits to the process.