Lake Shore Model 480 Fluxmeter User’s Manual
Computer Interface Operation
6-21
6.3.1 Command List Structure
6.3.2 IEEE-488/Serial Interface Commands (Alphabetical Listing)
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 instrument. The
instrument related command is
*RST
.
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. Refer to
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
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. Refer to the
*ESR?
command for a list of event
flags.
ESR?
Query Standard Event Status Register
Input:
*ESR?
Returned: <ESR bit weighting>
. Format:
nnn[term]
.
Remarks:
Queries for various Model 480 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
Bit
Bit Weighting
Event Name
0
1
OPC
4
16
EXE
2
4
QYE
5
32
CME
3
8
DDE
7
128
PON