IEEE-488 Command Reference
Copyright © Itech Electronic Co., Ltd. 32
Related Commands
*ESE
*ESR
*PSC
*STB?
This query reads the Status Byte register, which contains the status summary
bits and the Output Queue MAV bit. Reading the Status Byte register does not
clear it. The input summary bits are cleared when the appropriate event
registers are read (see chapter “Programming the Status Registers” for more
information). A serial poll also returns the value of the Status Byte register,
except that bit 6 returns Request for Service (RQS) instead of Master Status
Summary (MSS). A serial poll clears RQS, but not MSS. When MSS is set, it
indicates that the electronic load has one or more reasons for requesting
service.
Query Syntax
*STB?
Parameters
None
Returned Parameters
<NR1> (register value)
Related Commands
*SRE
*ESR
*ESE
*TRG
This command generates a trigger to any system that has BUS selected as its
source (for example, TRIG:SOUR BUS). The command has the same affect as
the Group Execute Trigger (<GET>) command.
Command Syntax
*TRG
Parameters
None
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