User`s guide

Use the <enable_value> parameter to specify which bits will be reported
to the Status Byte. 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 5 (decimal value = 32) and bit 9 (decimal value = 512), the
corresponding decimal value would be 544 (32 + 512).
The *CLS (clear status) command will not clear the enable register but it
does clear all bits in the event register.
The STATus:PRESet command will clear all bits in the enable register.
The *RST and SYSTem:PRESet commands have no effect on this register.
The *PSC command affects whether this register is cleared at power on.