90088262 MCS130B
CORNERSTONE 130B MONOCHROMATORS
62
The fourth synchronization operation, also adopted from IEEE488, is only for synchronizing
CS130B internal operations. The *WAI command tells the CS130B to store and not process any
further commands until all currently pending operations are finished. In essence, when it follows an
overlapped command, the *WAI command makes the overlapped command sequential.
It doesn’t necessarily help with synchronizing a separate instrument with the CS130B, but it can be
used for example to set a wavelength, wait for the wavelength to settle, then open the shutter:
•
Send wavelength command (e.g. “gowave 587.1”);
•
Send *wai command;
•
Send
shutter command (e.g. “shutter o”).
The *WAI command may be more useful for instruments that can perform operations that are
dissimilar, for example, a meter that can measure current or voltage.
It should be noted that incoming commands are queued in the input buffer while the CS130B is
waiting. This buffer can store up to about 20 commands.
15.9 ERROR CODES
The Status Byte is cleared to 0 at power-up. Whenever any error is encountered it is set to the
value 32. It is cleared again when the CS130B
receives a “STB?” query.
The Error Code is set to a value that corresponds to the latest error. Query it using
the “ERROR?”
query. The CS130B sends the value of the Error Code and then resets the value to 0.
Error code
Cause
0
No error.
1
Command not understood.
2
Bad parameter used in command.
3
Destination position for wavelength motion not allowed.
6
Accessory not present (usually filter wheel).
8
Could not home wavelength drive.
9
Label too long (e.g. “filter1label chartreuse”).
10
System error.
The Error Code is included for reverse compatibility with older Cornerstone products. The
preferred error-
detect query is “system:error?”. When the CS130B encounters an error, it plac es
an error code and an error description in a queue. Up to ten errors can be stored in the queue.
Only one error is reported at a time, even though there may be several in the queue. To read all
the errors, send the “system:error?” query until the response is “0, No Error”.
The CS130B
responds to the “system:error?” query by sending a string containing two c omma -
separated fields. The first field is a decimal number representing the code for the oldest error. The
second field is a string containing a short description of the error. Here are some examples of error
responses. The full list is on the next page.
Command
Response to “system:error?” query Explanation
gowav 765
-113, Undefined Header
CS130
B doesn’t understand
“gowav” (should be “gowave”)
gowave 9999
-224, Illegal Parameter Value
Requested wavelength too high
gowave 765
0, No Error
No problem
N/A
501, Filter Wheel Missing
No filter wheel detected at power-up.
Содержание Cornerstone 130B
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Страница 32: ...90088262 MCS130B CORNERSTONE 130B MONOCHROMATORS 32 Figure 23 Model 74010 Filter Wheel...
Страница 42: ...90088262 MCS130B CORNERSTONE 130B MONOCHROMATORS 42 14 13BDIMENSIONS Figure 30 Cornerstone 130B Dimensions...
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