F8628X | HIMA Communication Module

Faults of the modules are signaled by front LEDs (interface LED or ERR LED). The corresponding function block informs the user program via system variables. In order to maintainthe redundancy of the H41q and H51q systems faulty coprocessor or communication modules have to be changed immediately. To change faulty modules in a redundant system (twocentral modules) during operation of the system the following procedure must be observed:1. Remove fixing screw of the central module.2. The related central module has to be removed.3. Remove fixing screw of the module to be changed.4. The defective coprocessor module or communication module has to be removed.5. All interface cables including cable for redundancy have to be unplugged.6. On the module in exchange for the defective module all switches have to be set exactly tothe same positions.7. All interface cables including cable for redundancy have to be plugged in.8. The coprocessor or communication module in exchange has to be plugged in.9. Fix the mounting screw of the changed module.10.The related central module has to be plugged in.11.Fix the mounting screw of the central module.