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Cygnus 2 Operating Manual
will never proceed past the Source switching state. If a value other than 0 is
entered, the input chosen as the Turret Input is designated as such on the
Digital I/O display. Input lines are activated with a contact closure to ground.
TURRET DELAY . . . . . . . . . . . . . . . 2 to 180 s
The Turret Delay time sets the maximum amount of time the Process will
remain in CRUCIBLE SW(itch), waiting for rotation to complete without turret
feedback before proceeding to the pre-condition state. If a Turret Input signal
is expected (Turret Feedback = Yes) this is the time Cygnus 2 will wait to
receive the input signal. If the signal is not received within this time, Cygnus 2
will stop. If the Turret Input becomes active during the delay time, processing
continues immediately. Permissible values are 2 to 180 seconds. The default
value is 5 seconds.
Cygnus 2 will proceed to the Pre-Condition state after the
Turret Delay time expires. This could result in damage to
your equipment if the crucible is not in position after
expiration of the Turret Delay time.
4.3 DAC Output Selection Rules
The six standard DAC outputs, DAC 1 to DAC 6, located on the back of the
Cygnus 2 and the six optional DAC outputs, DAC 7 to DAC 12, may be used for
rate control or to record rate, thickness and rate deviation. Since these outputs can
be set up for different functions, certain rules apply.
No DAC output can be set up as both a recorder output and a Source output.
If this is attempted, an error message will be displayed.
A DAC output cannot be set up for more than one Source. If this is attempted
the error message DAC Used Source # will be displayed.
A DAC output can be set up for more than one recorder output including any
combination of Material or Sensor recorders Rate/Thickness or Sensor
Rate/Thickness.
If a DAC output is set up for multiple recorder outputs that are required to be
operative at the same time, the error message Recorder Conflict will appear.
This is a non-fatal error (that is, it will not cause Cygnus 2 to STOP) and the
message will remain until the conflict is resolved or a STOP takes place.
The priority of a recorder output that is in conflict is:
a. Filtered Rate/Thickness on the Material
b. Sensor Unfiltered Rate/Thickness from Sensor.
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