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Lake Shore Model 330 Autotuning Temperature Controller User's Manual
Q Q Q Q OPC?
Query Operation Complete
Input:
*OPC?
Returned: 1. Format: n[term]
Remarks: Places a "1" in the controller output queue upon completion of all pending selected device
operations. Send as the last command in a command string. Not the same as *OPC.
Q Q Q Q RST
Reset Instrument
Input:
*RST
Returned: Nothing
Remarks: Sets controller parameters to power-up settings.
Q Q Q Q SRE
Configure Status Reports in the Service Request Enable Register
Input:
*SRE <bit weighting>
Returned: Nothing
Remarks: Each bit has a bit weighting and represents the enable/disable status of the corresponding
status flag bit in the Status Byte Register. To enable a status flag bit, send the command
*SRE with the sum of the bit weighting for each desired bit. See the *STB? command for a list
of status flags.
Example: To enable status flags 0, 3, 4, and 6, send the command *SRE 89[term]. 89 is the sum of the
bit weighting for each bit.
Q Q Q Q SRE?
Query the Configuration of Status Reports in the Service Request Enable Register
Input:
*SRE?
Returned: <SRE bit weighting>. Format: nnn[term]
Remarks: The integer returned represents the sum of the bit weighting of the enabled bits in the Service
Request Enable Register. See the *STB? command for a list of status flags.
Q Q Q Q STB?
Query Status Byte
Input:
*STB?
Returned: <STB bit weighting>. Format: nnn[term]
Remarks: Acts like a serial poll, but does not reset the register to all zeros. The integer returned
represents the sum of the bit weighting of the status flag bits that are set in the Status Byte
Register.
Q Q Q Q TST?
Query Self-Test
Input:
*TST?
Returned: 0 or 1. Format: n[term]
Remarks: The Model 330 performs a self-test at power-up. 0 = no errors found, 1 = errors found.
Q Q Q Q WAI
Wait-to-Continue
Input:
*WAI
Returned: Nothing
Remarks: Prevents execution of any further commands or queries until completion of all previous ones.
Changing the sample sensor and reading it immediately with a device dependent query may
result in a reading error because the sensor needs time to stabilize. Place a *WAI between
the sensor change and query for a correct reading. Achieve the same results with repeated
queries or using a Service Request, but *WAI is easier. Send *WAI as the last command in a
command string followed by appropriate termination. It cannot be embedded between other
commands.
4-12
Bit
Bit Weighting
0
1
3
8
4
16
6
64
89
Event Name
New A&B
Alarm
Error
SRQ
Remote Operation
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