The algorithm options parameter (ALGO_OPTS) allows you to specify abort or no-abort on read errors. The ALGO_OPTS parameter is supported in the Action, Calculation/Logic, and Condition function blocks.
AbortOnReadErrors — When selected, the expression algorithm aborts after encountering a read error on any parameter. A read error occurs, for example when a parameter in another controller cannot be read because the controllers are not communicating.
When the expression aborts, the following occurs:
Condition block — PRE_OUT_D retains its value from the previous scan
Action block — None of the assignment statements are executed
Calc/Logic block — None of the assignment statements are executed