OPERATION 3.4 ELECTRONIC MONITORING AND CONTROL SYSTEM ECS Graphical Diagram see illustration Z21737 This illustration shows the components and the signal flow of a typical ECS-System for Shovels powered by two Diesel engines. Overall View of Menu Control All items of the Menu Control are listed up on page 138 in sequence of their Menu Levels. Overall View of Fault Messages and Information Messages All fault messages and information messages are listed up on page 158 in sequence of their message page Numbers. 137