Standard Event Status (Esr); Standard Event Status Enable (Ese); Communication Error Status (Cesr) - Stanford Research Systems SIM918 Operating And Service Manual

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3.5.3 Standard Event Status (ESR)

3.5.4 Standard Event Status Enable (ESE)

3.5.5 Communication Error Status (CESR)

The Standard Event Status Register consists of 8 event flags. These
event flags are all "sticky bits" that are set by the corresponding
events, and cleared only by reading or with the *CLS command.
Reading a single bit (with the *ESR? i query) clears only Bit i.
Weight Bit Flag
1 0 OPC
2 1 INP
4 2 QYE
8 3 DDE
16 4 EXE
32 5 CME
64 6 URQ
128 7 PON
OPC : Operation Complete. Set by the *OPC command.
INP : Input bu er error. Indicates data has been discarded from the
input bu er.
QYE : Query Error. Indicates data in the output queue has been lost.
DDE : Device-Dependent Error. Indicates a failed autocalibration or
a reference clock conflict.
EXE : Execution Error. Indicates the error in a command that was
successfully parsed. Out-of-range parameters are an example.
CME : Command Error. Indicates a command parser-detected error.
URQ : User Request. Indicates that a front-panel button was pressed.
PON : Power On. Indicates that an o -to-on transition has occurred.
The ESE acts as a bitwise AND with the ESR register to produce the
single-bit ESB message in the Status Byte Register (SB). The register
can be set and queried with the *ESE(?) command.
At power-on, this register is cleared.
The Communication Error Status Register consists of 8 event flags;
each of the flags is set by the corresponding event, and cleared only
by reading the register or with the *CLS command. Reading a single
bit (with the CESR? i query) clears only Bit i.
Remote Operation
SIM918 Precision Current Preamplifier