Conditional Manual Data Entry (CMDE)

Conditional Manual Data Entry (CMDE) provides a set of functions to determine if a PI point should be collected based on conditions during a tour run. These conditions can include current values of other points, previous values of points, the time a point was collected, as well as many other options.

CMDE can be defined for an individual point or for a group of points. CMDE for individual points takes precedence over any group CMDE. The Conditional Specification field can be accessed from the Tag Configuration window in the following ways.

• For individual conditional specification, you select the Tag Entry Options tab.

• For group conditional specification, you select a group from the Tree View and then select the Tag Group Configuration tab.

After the conditional specification is entered, you verify your formula by clicking . Note that if you use an invalid function, the function is displayed in red font.

An invalid formula elicits an error or warning. For example, if you use a PI point that does not exist within the tour, you receive a warning. A warning is displayed because you can add the point to the tour at a later time (prior to running the tour) and revalidate the conditional specification.

To activate the editor's IntelliSense feature, use these key combinations:

• CTRL + SHIFT. Prompts with a list of CMDE functions along with their descriptions.

• CTRL + T. Prompts with a list of tags in the tour.

• CTRL + O. Prompts with a list of CMDE operators.

Limitations

To save database space, the total number of characters (including spaces) of a CMDE formula cannot exceed 1000. If a formula has more than 1000 characters, PI Manual Logger displays a validation error message, automatically truncates extra characters, and validates against only the first 1000 characters of the formula.

CMDE is not case-sensitive and spaces are optional.