GW Instek GOM-802 Programming Manual User Manual
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DC MILLI-OHM METER
PROGRAMMER MANUAL
⎯ 44 ⎯
SYSTem:ERRor? returns 0, “No error”
SYSTem:VERSion?
(query only)
Function:
Return the SCPI version of the device.
Syntax:
SYSTem:VERSion?
Returns:
1994.0
DC MILLI-OHM METER
PROGRAMMER MANUAL
⎯ 45 ⎯
7. STATUS AND ERROR REPORTING
A set of status registers allows the user to quickly determine the
Meter’s internal processing status. The status register, as well as the
status and event reporting system, adhere to SCPI recommendations.
Structure of System
The sketch of the status and event reporting system is showed as
figure 7. Each component of the sketch represents a set of registers and
queues that can read, report, or enable the occurrence of certain events
within the system.
If a specific event in the Meter sets a bit in a status register, reading
which can tell you what types of events have occurred.
Each bit in the status register corresponds to a bit in an enable register;
the enable bit must be high for the event to be reported to the Status Byte
Register.
A Service Request (SRQ) is the last event to occur. The SRQ requests an
interrupt on the GPIB to report events to the system controller.
Status Registers
There are two kinds of status registers are included to the Meter.
z
OPERation Status Registers ( CONDition, EVENt, and ENABle)
z
QUEStionable Status Registers (CONDition, EVENt, and ENABle)
The lower level nodes: QUEStionable and OPERation each have three 16
bits registers: CONDition, EVENt, and ENABle. Figure 8 shows the
sequential relationship between these three types of registers and the
commands that relate to each register.