quote:以下是引用HITIAR在2012-12-09 13:44:18的发言: PROGRAM Startup VAR RetValReadIO : EnumSetAndGetSafeValue; RetValIO : BOOL; END_VAR
REPEAT //get safe value for waiting for the communication RetValReadIO := _getSafeValue( Variable := i_start_get_256, accessmode := default_value, getvalue := RetValIO);