The Inspect block has no processing algorithm. All processing is performed in the Inspect server, which reports its results to the Inspect block.
The Inspect block has two external input parameters, ENABLED and PROCESS_IN. ENABLED can be set to 0 or 1 to disable or enable Inspect processing on the portion of the plant defined by the AREA parameter. You can configure the module that contains the Inspect block to have the discrete output of another block wired to the ENABLED parameter of the Inspect block. In this way, you can programmatically turn Inspect processing of the block on or off. Inspect processing calculates utilization values for a specific Area, time frame, and time window.
PROCESS_IN is the input value the Inspect block averages to produce the PROCESS value. PROCESS_IN can be tied to a CALC block, a process value, or an OPC value. It is possible to have more than one Inspect block in the control system (for example, if you want information for both Current Hour and Current Shift to be available). However, do not define PROCESS_IN in more than one block in the same part of the control system (Area, Process Cell, Unit Module). If more than one Inspect block has PROCESS_IN defined the application displays only one PROCESS value and there is no way to determine which is displayed.