Mitsubishi Electric MELFA CR800 Series Instruction Manual page 101

M_DSO
[Function]
Regarding DSO for functional safety, this refers to the current value.
DSO Output enabled: 1
DSO Output disabled: 0
[Format]
Example) <Numerical variable> = M_DSO( <DSO number> )
[Terminology]
<Numerical variable> This specifies where to store the DSO state.
<DSO number> This specifies a number for DSO whose state to be obtained.
Setting range: 1 to 4
[Reference Program]
M1 = M_DSO(1) 'The state of DSO1 is stored in M1.
[Explanation]
(1) Regarding DSO for functional safety, this refers to the current state.
(2) Assigning a value other than 1 to 4 to <DSO number> causes the L.3880 error on execution.
5 STATE VARIABLE
State Variables 5-91