Lake Shore Model 218 Temperature Monitor User’s Manual
Remote Operation
6-19
Q
OPC?
Query Operation Complete
Input:
Q
OPC?
Returned: 1
. Format:
n[term]
Remarks:
Places a “1” in the controller output queue upon completion of all pending selected device
operations. Send this as the last command in a command string. This is
not
the same
function as the
Q
OPC
command.
Q
RST
Reset
Instrument
Input:
Q
RST
Returned:
Nothing
Remarks:
Sets controller parameters to power-up settings.
Q
SRE
Configure Status Reports in the Service Request Enable Register
Input:
Q
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
Q
SRE
with the sum of the bit weighting for each desired bit. See the
Q
STB?
command for a
list of status flags.
Example:
To enable status flags 0, 3, 4, and 6, send
*SRE 89[term]
. 89 is the bit weighting sum for each bit.
Bit
Bit Weighting
Event Name
0 1
New
Reading
3 8
Alarm
4 16
Error
6 64
SRQ
89
Q
SRE?
Query the Configuration of Status Reports in the Service Request Enable Register
Input:
Q
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
Q
STB?
command for a list of status flags.
Q
STB?
Query
Status
Byte
Input:
Q
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.
Bit
Bit Weighting
Event Name
Bit
Bit Weighting
Event Name
0 1
New
Reading
4 16
Error
1 2
Unused
5 32
ESB
2 4
Overload
6 64
SRQ
3 8
Alarm
7 128
Datalog
Done
Q
TST?
Query
Self-Test
Input:
Q
TST?
Returned: 0
or
1
. Format:
n[term]
Remarks:
The Model 218 performs a self-test at power-up.
0
= no errors found,
1
= errors found.
Q
WAI
Wait-to-Continue
Input:
Q
WAI
Returned:
Nothing
Remarks:
This command is not supported in the Model 218.