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
.
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
status summary (MSS) message.
*STB? does not change the status byte, MSS, and RQS.
Bit Bit
Weight
Bit Name
Description
0
1
Reserved
Reserved for future use by the IEEE488. The bit value is
notified as zero.
1
2
Reserved
2
4
Error/Event
Queue
If data exists in the error or event queue, this bit is set to true.
3
8
Questionable
Status Register
(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 status enable register is true.
4
16
Message
Available (MAV)
This bit is set to true when a request is received from the
digital programming interface and the PAT-T is ready to output
the data byte.
5
32
Standard Event
Status Bit
Summary (ESB)
This bit is set to true when a bit is set in the event status
register.
6
64
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
--
Overview
Setup
Overview of Messages
Command
(function search)
Protection and Clear the Alarm
Setting Changes using triggers
Command
(ABC search)
Command
(Sub-system search)
Appendix
Tutorial
PAT-T series Communication Interface Manual
KIKUSUI ELECTRONICS CORP.
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