Mitsubishi MELSEC-L series Programming Manual page 329

[ST]
IF(LDF(TRUE, SD1282.0))THEN
PLS(TRUE, Var_Flag);
END_IF;
IF((LDP(TRUE, Var_Flag_Inst)) &(SD1282.0=TRUE)
OR((Var_Flag=TRUE)&(Var_Flag_Exe=FALSE)))THEN
SP_SOCCLOSE(TRUE, "U0", 1, Var_ControlData, Var_Result);
SET(TRUE, Var_Flag_Exe);
END_IF;
IF(Var_Result[0]=TRUE)THEN
IF(Var_Result[1]=FALSE)THEN
SET(TRUE, Var_Flag_Normal); (* Turns normal completion flag ON *)
ELSE
SET(TRUE, Var_Flag_Error);
END_IF;
RST(TRUE, Var_Flag_Exe);
END_IF;
(* When open completion signal turns OFF *)
(* Turns flag ON *)
(* Shuts off the connection number 1 *)
(* Turns execution flag ON *)
(* Execution finished *)
(* Normal completion *)
(* Error completion *)
(* Turns error completion flag ON *)
(* Turns execution flag OFF *)
7.2 SOCCLOSE Instruction
SP_SOCCLOSE
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