GE IC695CRU320-BB

Description

IC695CPU320/CRU320 Models
■ IC695CPU320: 1 GHz CPU microprocessor
■ IC695CRU320: 1 GHz CPU microprocessor with
redundancy
Serial Ports
The CPU has two independent, on-board serial ports,
accessed by connectors on the front of the module. Ports 1
and 2 provide serial interfaces to external devices. Either
port can be used for firmware upgrades. For serial port pin
assignments and details on serial communications, refer to
chapter 12.
Indicators
The eight CPU LEDs indicate the operating status of various
CPU functions.
LED State
On Blinking Off CPU Operating State
CPU OK On CPU has passed its powerup diagnostics and is functioning
properly.*
CPU OK Off CPU problem. RUN and OUTPUTS ENABLED LEDs may be
blinking in an error code pattern, which can be used by technical
support for troubleshooting. This condition and any error codes
should be reported to your technical support representative.
CPU OK, OUTPUTS ENABLED, RUN
Blinking in unison
CPU is in boot mode and is waiting for a firmware update through a
serial port.
OK Blinking
Other LEDs off.
CPU in Stop/Halt state; possible watchdog timer fault. Refer
to the fault tables. If the programmer cannot connect, cycle
power with battery attached and refer to fault tables.
RUN Off CPU is in Stop mode.
OUTPUTS ENABLED On Output scan is enabled.
OUTPUTS ENABLED Off Output scan is disabled.
I/O FORCE On Override is active on a bit reference.
BATTERY On Battery has failed or is not attached.
Note: To provide reliable backup, routine maintenance should
include scheduled battery replacement. See
“Specifications” on page 2-15.
SYSTEM FAULT On CPU is in Stop/Faulted mode because a fatal fault has occurred.
COM1 Blinking
COM2 Blinking
Signal activity on port

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