10 RX3i Ethernet NIU
GFK-2419M
Subject Description
Must Have Logic if
Powering-Up From Flash
If no user logic exists in the CPU RAM when a write to flash is performed, the CPU
may not properly load from flash after a power cycle. In order to guarantee proper
power up from flash, insure that both hardware configuration and logic have been
stored to RAM before writing to flash.
ENIU may not detect low-
battery condition
PACSystems ENIUs may not detect a low-battery condition early enough to
provide a meaningful warning to replace the battery. A battery with very low
capacity may still have a terminal voltage high enough to report that it is a good
battery. When the battery starts supplying the memory power (battery backup), the
battery voltage quickly drops to unacceptable levels, and it may fail.
Recommendation: replace batteries in accordance with the guidelines provided in
the CPU Reference Manual, GFK-2222.
Two loss of module faults
for Universal Analog Module
Occasionally, the hot removal of the Universal Analog Input Module
(IC695ALG600) results in two “Loss of I/O Module” faults instead of one.
Power up of Series 90-30
HSC module may take up to
20 seconds
As power is applied to a 90-30 High-Speed Counter, the "module ready" bit in the
status bits returned each sweep from the module may not be set for as long as 20
seconds after the first ENIU sweep, even though there is no "loss of module"
indication. I/O data exchanged with the module is not meaningful until the module
has set this bit.
Informational fault at power
up
Intermittently during power-up, an Informational non-critical ENIU software fault
may be generated with fault extra data of 01 91 01 D6. This fault has no effect on
the normal operation of the ENIU. But if the hardware watchdog timer expires after
this fault and before power has been cycled again, the outputs of I/O modules may
hold their last state, rather than defaulting to zero.
Extended Memory Types for
I/O Triggers
%R, %W and %M cannot be used as I/O triggers.
Possible Machine Edition
inability to connect
Infrequently, an attempt to connect a programmer to an ENIU via Ethernet is
unsuccessful. The normal connection retry dialog is not displayed.
Recommendation: Reboot the computer that is running the programmer.
SNP Update Datagram
message
If an Update Datagram message requests 6 or fewer bits or bytes of data, the
ENIU returns a Completion Ack without Text Buffer. The protocol specifies that
the returned data should be in the Completion Ack message, but it may not be.
GBC30 may not resume
operation after power cycle
In rare instances, a GBC30 in an expansion backplane may not resume normal
operation after a power cycle of either the expansion backplane or the main
backplane.
To restore GBC operation, power cycle the rack again.
Configuration of third-party
modules
Do not specify a length of 0 in the configuration of a third-party module. The
module will not work properly in the system.
Power supply status after
ENIU firmware update
The ENIU reports a “Loss of or missing option module” fault for the IC695PSD140
RX3i power supply following an update of ENIU firmware. The slot appears empty
in the programmer’s online status detail view. The power supply continues to
operate normally. Recommendation: Power cycle to restore normal status
reporting.
Power supply status after
power cycling
Rarely, turning a power supply on or off may not result in an add or loss fault.
Also, the slot will appear empty in the programmer’s online status detail view. The
power supply continues to operate normally. Power cycle to restore normal status
reporting.
Don’t use multiple targets
If the hardware configuration is stored from one target and logic is stored from a
different target, powering-up from flash will not work. The observed behavior is
that, following a power up from flash, Machine Edition reports hardware
configuration and logic "not equal".
Missing Loss of Terminal
slock fault
The IC695ALG600/608/616 analog input modules do not produce a “Loss of
terminal block” fault if the hardware configuration is stored or the module is hot-
inserted when the terminal block is not locked into place.
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