SM020 is ON when plus/minus operation result is 0
SM021 is ON when minus operation overflows
SM022 is ON when plus operation overflows
When SM032 is ON, ON/OFF mapping memory of HM、HS
and current values of HT、HC、HD will be reset.
When SM033 is ON, all PLC user’s program will be cleared.
When SM034 is ON, all PLC external contacts will be set
OFF.
Forbid input interruption 0
After executing EI instruction,
the input interruption couldn’t act
independently when M acts, even
if the interruption is allowed.
E.g. ： when SM050 is ON,
I0000/I0001 is forbidden.
Forbid input interruption 1
Forbid input interruption 2
Forbid input interruption 3
Forbid input interruption 4
Forbid input interruption 19
Forbid timing interruption 0
After executing EI instruction,
the timing interruption couldn’t
act independently when M acts,
even if the interruption is
allowed.
Forbid timing interruption 1
Forbid timing interruption 2
Forbid timing interruption 3
Forbid timing interruption 4
Forbid timing interruption 19
Interruption（SM50-SM80）
（M）
To Next Page
Loading...