SCP Malfunctions

SCP includes the capability to malfunction Fieldbus Modules (FBMs). In a process plant, FBMs connect the wires from field devices to the control system. An FBM may contain up to 32 wires. An FBM failure can occur on a point basis (one of the 32 wires fails) or on a module basis (all 32 signals fail).

Note: Before loading the simulation, set the SCPEngine configuration option "Disable automatic malfunction generation (1=yes)" to 0 to enable FBM failure modes.

The next example demonstrates a point failure.

1. On the main window, click the Tools menu, and then select Engine Malfunction Tool.

   

2. Select SCPEngine.

   

3. In the SCPEngine Malfunction Editor, expand ECBs and select ECB 900001.MALF.

   

4. Select Activate.

5. Click the Save button and choose the Tank Level Control system.

   

6. On the AW, through FoxSelect, double click DEMO:DISCH_DMD.

   

7. FoxView should open to the Detail Display for this block. Notice FBM and the output are both colored cyan. This color signifies that the block is out of service.

   

8. Click the Deactivate button to deactivate the malfunctioning object. Close the SCP Engine Malfunction Editor.

   

9. Open the Malfunction Summary . The three malfunctions generated in the previous steps should appear. We will use these malfunctions in an upcoming section.