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 2
(decimal value = 4), bit 3 (decimal value = 8), and bit 7 (decimal value =
128), the corresponding decimal value would be 140 (4 + 8 + 128).
You can use the *PSC command to control whether the Standard Event
enable register is cleared at power on.
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 does not clear the bits in the Status Byte
enable register.