X-CPU 01
3 Product Description
HI 801 009 E Rev. 4.00
Page 13 of 52
3.4.2
Safety-Related Processor System
The safety-related processor module is a 1oo2 processor system. Continuous self-tests
ensure safety-related operation.
Characteristics:
Two
synchronous
microprocessors
Specific
DDRAM
memory
for each microprocessor
Testable hardware comparator for data buses
Watchdog
(WD)
Gold capacitor for buffering date/time
LEDs for indicating the system statuses
Mode switch for configuring the module behavior when voltage is switched on
The processor module compares the data on both processors and triggers an interrupt if a
fault occurs.
A watchdog monitors both processors. Self-tests of the module also check the watchdog.
3.4.3 System
Controller
The system controller handles the entire data transfer between the various components of
the module:
Safety-related
processor
system
System busses A and B
Ethernet switch with connected interfaces
3.4.4 Memory
The module has a RAM and a non-volatile memory. The non-volatile memory is protected
by a CRC.
The non-volatile memory contains the following programs and information:
Operating
System
User
project
Enable switch, watchdog time, safety time
Online
modifications
Variable with the RETAIN attribute
Production data and, if necessary, trimming data
Fault status history
Events
While booting, the system transfers the program code from the non-volatile memory to the
redundant program and data memory.
3.4.5
Alarms and Events
The processor module records alarms and other events in its non-volatile memory.
Events are state changes of a variable that are performed by the plant or controllers and
are provided with a timestamp.
Alarms are events that signalize an increasing risk potential.
The HIMax system records the state changes as events specifying the time point when they
occurred. The X-OPC server transfers the events to other systems such as control
systems, that display or evaluate the events.
HIMax differentiate between Boolean and scalar events.
Summary of Contents for HIMax X-CPU 01
Page 1: ...X CPU 01 HIMax Manual...
