User`s guide

Use the <enable_value> parameter to specify which bits will be enabled.
The decimal value specified corresponds to the binary-weighted sum of the
bits you wish to enable in the register. For example, to enable bit 3
(decimal value = 8) and bit 5 (decimal value = 32), the corresponding
decimal value would be 40 (8 + 32).
The *CLS (clear status) command will not clear the enable register but it
does clear all bits in the event register.
The *PSC (power-on status clear) command determines whether or not the
Status Byte enable register is cleared at power on, or not cleared.
A STATus:PRESet, SYSTem:PRESet, *CLS, or *RST command does not
clear the bits in the Status Byte enable register.