Service Request Enable (Sre) - Stanford Research Systems SIM984 Operation And Service Manual

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2.5.2 Service Request Enable (SRE)

new status-generating condition.
Weight Bit Flag
1 0 OVLD
2 1 undef (0)
4 2 undef (0)
8 3 undef (0)
16 4 IDLE
32 5 ESB
64 6 MSS
128 7 CESB
OVLD : Overload Bit. Indicates whether an amplifier overload has
occurred.
IDLE : Indicates that the Input Buffer is empty and the command
parser is idle. Can be used to help synchronize SIM984 query
responses.
ESB : Event Status Bit. Indicates whether one or more of the enabled
events in the Standard Event Status Register is true.
MSS : Master Summary Status. Indicates whether one or more of
the enabled status messages in the Status Byte register is true.
Note that while −STATUS is released by the *STB? query, MSS
is only cleared when the underlying enabled bit message(s) are
cleared.
CESB : Communication Error Summary Bit. Indicates whether one or
more of the enabled flags in the Communication Error Status
Register has become true.
Most bits in the Status Byte are not cleared by the *STB? query. These
bits are only cleared by reading the underlying event registers, or by
clearing the corresponding enable registers. The one exception is the
OVLD bit, which itself is an event bit, and so is cleared by the *STB?
query.
Each bit in the SRE corresponds one-to-one with a bit in the SB
register, and acts as a bitwise AND of the SB flags to generate the
MSS bit in the SB and the −STATUS signal. Bit 6 of the SRE is
undefined—setting it has no effect, and reading it always returns 0.
This register is set and queried with the *SRE(?) command.
This register is cleared at power-on.
Remote Operation
SIM984 Isolation Amplifier