Gw-instek GOM-802 Programming Manual Manual de usuario descargar pdf (Pagina 25)

DC MILLI-OHM METER

PROGRAMMER MANUAL

⎯ 48 ⎯

Table 4: QUEStionable Status Register

Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8

∗

NU NU Limit Test

Fail HI

Limit Test

Fail LO

NU Ohm

Overload

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

NU NU

Temperature

Overload

NU NU NU NU NU

The command STATus:QUEStionable:CONDition? Reads the

QUEStionable CONDition register but dose not clear it.

The command STATus:QUEStionable:EVENt? Reads the QUEStionable

EVENt Status register and clears it.

OPERation Status Registers

Table 5 shows the bit designations of the 16 bit OPERation Status

Table 5: OPERation Status Register

Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8

NU NU NU NU NU NU NU

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

NU NU NU NU NU NU NU NU

∗

NU: not used

DC MILLI-OHM METER

PROGRAMMER MANUAL

⎯ 49 ⎯

Status Registers

There are two status registers are included to the Meter defined by IEEE-

488.1 and IEEE-488.2 standards.

z Status Byte Register (SBR)

z Standard Event Status Register (SESR)

Status Byte Register (SBR): The SBR (Table 6) summarizes the status of

all other registers and queues.

Table 6: Status Byte Register (SBR)

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

OPER RQS/MSS ESB MAV QUES E/E NU NU

The bit 0 and 1 are not used, so these bits are always zero. The bit 2

(Error and Event) indicates an error code is waiting to be read in the

Error Event Queue. The bit 3 (QUES, QUEStionable) is the summary bit

for the QESR (QUEStionable Event Status Register). When the bit is

high it indicates that status is enabled and present in the QUES. The bit 4

(MAV, Message Available) indicates that output is available in the

output queue. The bit 5 (ESB, Event Status Bit) is the summary bit for

the Standard Event Status Register (SESR). When the bit is high it

indicates that status is enabled and present in the SESR. The bit 6 (RQS,

Request Service) is obtained from a serial poll and shows that the

METER requests service from the GPIB controller. The bit 7 (OPER,

OPERation) is the summary bit for the OESR (OPERation EVENt

STATus Register).

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Gw-instek GOM-802 Programming Manual Manual de usuario Pagina 25

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