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Status and Events
PS2520G and PS2521G Programmer Manual
49
IEEE-488.1 and IEEE-488.2 Status Registers
The power supplies also include two status registers defined by
IEEE-488.1 and IEEE-488.2 standards:
H Status Byte Register (SBR)
H Standard Event Status Register (SESR)
Status Byte Register (SBR). The SBR (Figure 10) summarizes the
status of all other registers and queues.
OPER
RQS
ESB MAV E/E
ĊĊ
MSS
7
6
543210
6
QUES
Figure 10: Status Byte Register (SBR)
Use a serial poll or the *STB? query to read the contents of the SBR.
The bits in the SBR are set and cleared depending on the contents of
the Standard Event Status Register (SESR), the Event Status Enable
Register (ESER), and the Output Queue. When you use a serial poll
to obtain the SBR, bit 6 is the MSS bit. Reading the SBR does not
clear the bits.
Table 9 explains the function of each bit in the SBR.