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:
HStatus Byte Register (SBR)
HStandard 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
MSS
76543210
6QUES
Figure 10: Status Byte Register (SBR)
Use a serial poll or the 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.