Lakeshore Learning Materials 642 - Manual (Page 87)

Lake Shore Model 642 Electromagnet Power Supply User’s Manual
Computer Interface Operation 5-35
OPST? Operational Status Query
Input: OPST? [term]
Returned: <bit weighting> [term]
Format: nnn
Remarks: The integer returned represents the sum of the bit weighting of the operational status bits. Refer to
Paragraph 5.1.4.2.2 for a list of operational status bits.
OPSTE Operational Status Enable Command
Input: OPSTE <bit weighting> [term]
Format: nnn
Remarks:
Each bit has a bit weighting and represents the enable/disable mask of the corresponding operational
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]
Format:
nnn Refer to Paragraph 5.1.4.2.2 for a list of operational status bits.
OPSTR? Operational Status Register Query
Input: OPSTR? [term]
Returned: <bit weighting> [term]
Format: nnn
Remarks: The integers returned represent the sum of the bit weighting of the operational status bits. These status
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]
Format: +n.nnnn
<rate> Specifies the rate at which the current will ramp at when a new output current setting is
entered: 0.0001 – 99.999 A/s.
Remarks: Sets the output current ramp rate. This value will be used in both the positive and negative directions.
Setting value is limited by LIMIT.
RATE? Output Current Ramp Rate Setting Query
Input: RATE? [term]
Returned: <rate> [term]
Format: +n.nnnn (Refer to command for description)
RDGI? Current Output Reading Query
Input: RDGI? [term]
Returned: <current> [term]
Format: ±nn.nnnn
<current> Actual measured output current.