MXS-9100 Optical Switch Rackmount Operation Manual
91592 Rev. A2
June 21, 2019
27
IEEE488.2 Status Registers
The MXS-9100 supports four status registers.
Table 4. IEEE488.2 Status Registers
Acronym
Name
Description
ESE
Event Status Enable Register
Event flags that trigger ESB in the Status Byte
Register. This register is user-set.
ESR
Event Status Register
Event flags that have occurred.
This register is set by the module.
SRE
Service Request Enable Register
Status Byte flags that trigger RQS.
This registers is user-set.
STB
Status Byte Register
Status flags that have occurred.
This register is set by the module.
Each bit in these registers is a flag that represents a condition or event.
In pseudo code, the following rules apply.
1. IF (ESE & ESR) THEN STB |= ESB
2. IF (SRE & STB) THEN STB |= RQS
Note: The above rules use bit-wise AND.
Note: The values of the ESB and RQS bits are defined with the
*STB?
command.