Siemens ST950 Plus+ - Page 39

ST950 Plus+ User Manual
ST950 Plus+ User Manual
Page 39 of 176
667/HE/53000/000
Issue 2
Unrestricted
Flashes in a heartbeat pattern
Primary CPU software is operating normally
Flashes slowly (once per second)
Controller self test
Flashes quickly (several times per second)
Non normal operation e.g. start-up
SE - System Error (red)
Permanently on
Fault is present, e.g. one or more entries
present in the Fault Table
Flashes slowly (with the Heartbeat LED flashing in a
heartbeat pattern)
Reserve Mode
Flashes quickly (with the Heartbeat LED flashing in a
heartbeat pattern)
Reserve Mode is latched; manual reset
required
Flashes quickly along with the Heartbeat LED (both
flashing quickly)
Fault with the Primary CPU, e.g. self test fault
found
Flashes quickly at power-up (with the Heartbeat LED
off)
RTC faulty, e.g. backup support expired
SD – Shutdown (red)
Illuminated when the controller is in the Shutdown Mode i.e. signals are not being controlled.
FF – Fail Flash (yellow) : not used for Plus
+
Flashes when hardware fail flash is active.
PRG – Program (blue)
Flashes to indicate programming of an IC4 configuration and / or new firmware is pending or in progress.
Single pulse
IC4 configuration available for programming
Double pulse
Firmware upgrade available
Heart restore pending
Wipe request pending
Fast flash
Programming in progress
Solid on
Programming complete, power cycle required
SYS – System (green)
Flashes to indicate status
Slow flash
Normal operation
Medium flash
Normal operation, Fault present
Very fast flash
Restricted mode
COM – Communications (green)
On
Under UTC control, pulses off indicate receipt of messages