This module is designed to generate the appropriate alarm state for a device. The module monitors the command and flow status of two devices and determines whether the current state should be Normal or Alarm. This module is implemented as a control activity. The following state diagram shows how each fan status is determined. The results of these determinations is then ORed and ANDed to produce the outputs of the module.
Figure 1. Dual Fan Status Alarm Determination
You can view and modify the modules in this group's logic.