Lake Shore Model 340 Temperature Controller User’s Manual
Remote Operation
9-23
IEEE-488/SERIAL INTERFACE COMMANDS (Alphabetical Listing)
?
Process Last Query Received
Input: ?
Returned:
The response of the last query received by the instrument.
Remarks:
Used for the serial interface and is not necessary for IEEE. Reprocesses the last query
received by the instrument and sends a new response. This command cannot be chained
with other commands and must be sent by itself.
Q
CLS
Clear Interface Command
Input: *CLS
Returned:
Nothing
Remarks:
Clears the bits in the Status Byte Register and Standard Event Status Register and
terminates all pending operations. Clears the interface, but
not
the controller. The controller
related command is
*RST
.
Q
ESE
Configure Status Reports in the Standard Event Status Register
Input: *ESE
<bit
weighting>
Returned:
Nothing
Remarks:
Each bit is assigned a bit weighting and represents the enable/disable status of the
corresponding event flag bit in the Standard Event Status Register. To enable an event flag
bit, send the command
*ESE
with the sum of the bit weighting for each desired bit. See the
*ESR?
command for a list of event flags.
Example:
To enable event flags 0, 3, 4, and 7, send the command
*ESE 143[term]
. 143 is the sum of
the bit weighting for each bit.
Bit Bit
Weighting Event
Name
0 1 OPC
3 8 DDE
4 16
EXE
7 128 PON
143
Q
ESE?
Query the Configuration of Status Reports in the Standard Event Status Register
Input: *ESE?
Returned: <ESE bit weighting>
. Format:
nnn[term]
Remarks:
The integer returned represents the sum of the bit weighting of the enable bits in the
Standard Event Status Enable Register. See the
*ESR?
command for a list of event flags.
Q
ESR?
Query Standard Event Status Register
Input: *ESR?
Returned: <ESR bit weighting>
. Format:
nnn[term]
Remarks:
Queries for various Model 340 error conditions and status. The integer returned represents
the sum of the bit weighting of the event flag bits in the Standard Event Status Register.
Bit Bit
Weighting Event
Name
0 1
OPC
2 4
QYE
3 8
DDE
4 16 EXE
5 32 CME
7 128 PON
Q
IDN?
Query
Identification
Input: *IDN?
Returned: <manufacturer>, <model number>, <serial number>, <firmware date>
Format:
LSCI,MODEL340,aaaaaa,nnnnnn[term]
Remarks:
Identifies the instrument model and software level.