Rockwell Automation T8310 Trusted Expander Processor - Manual (Page 17)

Trusted
TM
Module T8310
Issue 12 Dec 06 PD-T8310 17
3.4. IMB Power Generation
The TMR Expander Processor Modules (both active and standby) generate three independent IMB
power supplies. These supplies are provided via a diode to the IMB/backplane. These supplies are
used to power the triplicated IMB interfaces within the interface modules within the Expander Chassis.
These supplies have a common return, commoned with the module’s internal 0V. Failure of any of
these supplies will not affect the remaining supplies. Similarly, overload conditions on a supply will not
affect the continued operation of the other supplies.
3.5. IMB Clock Generation
The active TMR Expander Processor Module provides synchronised IMB clock signals at the standard
IMB rate of 12.5M symbols/second. To minimise clock loading, the IMB connection provides
independent signals for odd and even module positions and for the other TMR Expander Processor
Module. All of these signals are driven synchronously.
3.6. 24V Supply Monitoring
The TMR Expander Processor Modules monitor each of the 24V supplies and generates status
information accessible by the TMR Processor.
3.7. Module Information
The following information is recorded by the TMR Expander Processor Module and made available to
the TMR Processor.
• Expander Bus link quality, including receive error counts for each communications link and link
status.
• Received message error, on a per link/FCR basis, including frame error, checksum error and
discrepancy.
• HIFT Clock, master and slave clock status, and master/slave switching.
• FCR watchdog status.
• Current active/standby status.
• IMB status information.
• 24V supply levels
• Module type code and serial number.
• Module removed flap status