Multiple groups within a system

For a multiple groups system, it just needs to duplicate the engineering of a one group system. However, it is necessary to call TECT_SYSTEM Function Block and define a system data structure, which contains the status of its groups as well as the control commands for the whole system, e.g. enable/disable process, enable/disable auto tune etc.

In this configuration, a TECT_HMI_MUX Function Block can be used as the direct communication interface to a HMI. It has the multiplexer principle and passes only one group of zone data from AC500 PLC to HMI to reduce the communication load. The usage of TECT_HMI_MUX will only make sense if more than 2 groups are defined.