2 – 10
Remote Operation
detected will be recorded in the error word.
W
Example:
64
The returned value of 64 indicates a problem with the 12 VDC shutter
power supply.
Model Number
X
Query the shutter head model. Returns the 7 character ASCII iden-
tifier, either “ SR475
LF
” or “ SR476
LF
”.
X
Example:
SR475
Serial Number
Y
Query the shutter head serial number.
Y
Example:
1234
The returned value indicates that the shutter head serial number is
1234.
Status Word
Z
Query the shutter head status word, a 15-bit value that is returned as
an unsigned integer. It can be used to verify the current modes and
settings of the shutter head.
Bit
Meaning
0
Shutter OK
1
Motor Enabled
2
Direction
3
In transit
4
Logic-level lockout
5
Serial lockout
6
Alignment mode
7,8
(Reserved)
9
Assertive mode
10
(Reserved)
11
Locked
12
Mode0 (Lo bit of mode number)
13
Mode1 (Hi bit of mode number)
14,15
(Reserved)
Bit 0,
Shutter OK
indicates that the shutter head is working properly.
Bit 1,
Motor Enabled
is 1 when the shutter motor is enabled.
SR475 and SR476 Laser Shutters