Kikusui TOS3200 - IEEE488.2 Register Model; Status Byte Register

152 TOS3200
IEEE488.2 Register Model
Status Byte Register
The status byte register stores STB and RQS (MSS) messages as defined by the IEEE488.1
standard. The status byte register can be read using IEEE488.1 serial polling or IEEE488.2
common command *STB?.
When serial polling is carried out, bit 6 responds with the request service (RQS). The status
byte value is not changed by serial polling.
*STB? makes the device transmit the contents of the status byte register and the master sta-
tus summary (MSS) message.
*STB? does not change the status byte, MSS, and RQS.
Bit
Decimal
value
Bit name Description
0 1 Reserved Reserved for future use by the IEEE488.
The bit value is notified as zero.
12Reserved
2 4 Error/Event Queue
If data exists in the error or event queue,
this bit will be set to true.
38
Questionable Status Regis-
ter (QUES)
This bit is set to true when a bit is set in the
QUEStionable event status register and the
corresponding bit in the QUEStionable sta-
tus enable register is true.
4 16 Message Available (MAV)
This bit is set to true when a request is
received from the digital programming inter-
face and the TOS3200 is ready to output
the data byte.
532
Standard Event Status Bit
Summary (ESB)
This bit is set to true when a bit is set in the
event status register.
664
Request Service (RQS)
This bit is set to true when a bit is set in the
service request enable register, and the
corresponding bit exists in the status byte.
The SRQ line of the GPIB is set.
Master Status Summary
(MSS)
This bit is set to true when any of the bits in
the status byte register is set to 1 and the
corresponding bit in the service request
enable register is set to 1.
7 128
Operation Status Register
(OPER)
This bit is set to true when a bit is set in the
OPERation event status register and the
corresponding bit in the OPERation status
enable register is set.
8-15
−
NOT USED –