2.6 Command List
2 – 15
Force Global Set
/
Reset of All Shutters
FSET
i
Force all shutters to manual control and set the state according to
parameter
i
. If
i
is 0, place all shutters in the unasserted state. If 1,
place them in the asserted state. This action can be executed from
the front panel by pressing and holding the
Reset
or
Set
keys for
about 2 seconds.
Global Set
/
Reset of All Shutters
GSET
i
Set the manual state of all shutters according to parameter
i
. If
i
is 0,
the manual state is unasserted state. If it is 1, it is asserted. If a given
shutter is under manual control, its state is updated accordingly.
If it is under TTL control it will return to the given state when it
is eventually switched back to manual control. This action can be
executed from the front panel by pressing the
Reset
or
Set
keys.
Shutter Mode
MODE(?)
c
{
,i
}
Set (query) the alternate mode for shutter
c
{
to
i
}
. Valid modes
range from 0 to 3 with zero being the default mode. The set form
sends the byte ‘0’, ‘1’, ‘2’ or ‘3’ to the shutter. The e
ff
ect of di
ff
erent
modes is hardware dependent; please see the shutter head manual
for descriptions of the available modes. The query form returns bits
12 and 13 of the shutter status byte (see
SSTB
).
Since the mode setting is stored in the volatile memory of the shutter
head, not in the SR474 , the mode setting is lost whenever the SR474
or the individual shutter head is reset or re-enabled.
Shutter Model
MODL?
c
Query the model number for shutter
c
. This should return something
like ‘SR475’ if the shutter is an SR475 shutter. This command sends
‘X’ to the shutter and returns the response.
Mute Alarm
MUTE(?)
{
i
}
Set (query) the mute status on the audible alarm. If
i
is 0 alarms are
audible. If 1, alarms are muted.
Shutter Polarity
POLR?
c
Query the polarity for shutter
c
. A value of 0 indicates the shutter is
normally open. A value of 1 indicates the shutter is normally closed.
Polarity can only be changed from the rear panel (
§
1.3.7).
SR474 Four Channel Shutter Driver