F8650X 984865065 HIMA Redundant multiplexer

These essential functions are
– two clock-synchronised micro processors
– each mikroprocessor with an own memory, one processor operates
with real data and program and the other one with inverted data and
program
– testable hardware comparer for all the external accesses of both micro
processors, in case of a fault the watch dog will be set to the safe status and the status of the processor is announced
– Flash-EPROMs of the program memory for the operating system and
the user’s program usable for min. 100.000 writing cycles
– Data memory in sRAM
– Multiplexer to connect I/O bus, DPR and redundant CU
– Battery backup of the sRAMs via batteries on the central module with
monitoring
– 2 interfaces RS 485 with galvanic isolation. Transm. rate: max. 57600 bps. Set to 9600 bps and to 57600 bps by switch, or setting also of
other transm. rates by software (the software values have priority)
– Diagnostic display and 2 LEDs for information out of the system, I/O
level and user’s program
– Dual Port RAM for fast memory access to the second central module
– hardware clock, battery backed
– I/O bus logic and connection to the input-/output modules
– Fail-safe watchdog
– power supply monitoring, testable (5 V system voltage)
– Battery monitoring
Central module: F 8650, F 8651, F 8652, F 8653:
Battery: CR 2477N, HIMA-part no. 440000018
The module may be pulled out under voltage. With single channel systems
this results in a shut down of the plant, in redundant systems the system
reaction if a central module is pulled out depends on the configuration.

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