Lakeshore 642 User Manual page 87

OPST?
Operational Status Query
Input: OPST? [term]
Returned: <bit weighting> [term]
nnn
Format:
The integer returned represents the sum of the bit weighting of the operational status bits. Refer to
Remarks:
Paragraph 5.1.4.2.2 for a list of operational status bits.
OPSTE
Operational Status Enable Command
Input: OPSTE <bit weighting> [term]
nnn
Format:
Each bit has a bit weighting and represents the enable/disable mask of the corresponding operational
Remarks:
status bit in the Operational Status Register. This determines which status bits can set the
corresponding summary bit in the Status Byte Register. To enable a status bit, send the command
OPSTE with the sum of the bit weighting for each desired bit. Refer to Paragraph 5.1.4.2.2 for a list
of operational status bits.
OPSTE?
Operational Status Enable Query
Input: OPSTE?[term]
Returned: <bit weighting> [term]
nnn
Format:
OPSTR?
Operational Status Register Query
Input: OPSTR? [term]
Returned: <bit weighting> [term]
nnn
Format:
The integers returned represent the sum of the bit weighting of the operational status bits. These status
Remarks:
bits are latched when the condition is detected. This register is cleared when it is read. Refer to
Paragraph 5.1.4.2.2 for a list of operational status bits.
RATE
Output Current Ramp Rate Setting Command
Input: RATE <rate> [term]
+n.nnnn
Format:
<rate>
Sets the output current ramp rate. This value will be used in both the positive and negative directions.
Remarks:
Setting value is limited by LIMIT.
RATE?
Output Current Ramp Rate Setting Query
Input: RATE? [term]
Returned: <rate> [term]
+n.nnnn (Refer to command for description)
Format:
RDGI?
Current Output Reading Query
Input: RDGI? [term]
Returned: <current> [term]
Format: ±nn.nnnn
<current>
Computer Interface Operation
Lake Shore Model 642 Electromagnet Power Supply User's Manual
Refer to Paragraph 5.1.4.2.2 for a list of operational status bits.
Specifies the rate at which the current will ramp at when a new output current setting is
entered: 0.0001 – 99.999 A/s.
Actual measured output current.
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