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*SAV
This command stores the present state of the electronic load to a specified location in memory. Up to
101 states can be stored.
If a particular state is desired at power-on, it should be stored in location 0. It will then be recalled at
power-on if the power-on state is set to RCL0. Use *RCL to retrieve instrument states.
*SRE
This command sets the condition of the Service Request Enable register. This register determines
which bits from the Status Byte Register (see *STB for its bit configuration) are allowed to set the
Master Status Summary (MSS) bit and the Request for Service (RQS) summary bit. A 1 in any Service
Request Enable register bit position enables the corresponding Status Byte register bit and all such
enabled bits are then logically ORed to cause Bit 6 of the Status Byte Register to be set.
When the controller conducts a serial poll in response to SRQ, the RQS bit is cleared, but the MSS bit is
not. When *SRE is cleared (by programming it with 0), the electronic load cannot generate an SRQ to
the controller. The query returns the current state of *SRE.
<NR1> (register binary value)
*STB?
This query reads the Status Byte register, which contains the status summary bits and the Output
Queue MAV bit. Reading the Status Byte register does not clear it. The input summary bits are cleared
when the appropriate event registers are read (see Section 1.4 Programming the Status Registers for
more information). A serial poll also returns the value of the Status Byte register, except that bit 6
returns Request for Service (RQS) instead of Master Status Summary (MSS). A serial poll clears RQS, but
not MSS. When MSS is set, it indicates that the electronic load has one or more reasons for requesting
service.
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