Chapter 3 PLC System Configuration & Settings Reset Button & Clear Button The parameters are used to setup and enable the function concerning Reset (RST) and Clear (CLR) button on CPU panels. For descriptions regarding button function and operation, please refer to user manuals for related PLC types. AH5x0 and AH5x1 AH500 Redundancy Series Front Panel System Front Panel Enable Redundancy When enabled, two redundant main backplanes will appear in System Configuration area (see below) containing a left redundant main backplane and a right redundant main backplane which mirrors the left and cannot execute functions including add, delete or replace modules.
To perform these functions, users need to use the left redundant main backplane. When Redundancy function is enabled, the expansion backplane in System Configuration area will automatically change to redundant expansion backplane; For redundant main backplane configuration module and functions, please refer to AH560 redundant system related manuals . (Currently, only AH560 redundant system series support Redundancy Enable function.) 3-163