text: <s>[INST] In Micro 850, What is a purpose of the green tags? _IO_Xx_ST_00 and _IO_Xx_CO_00 [/INST] _IO_Xx_ST_yy represents Global Variables for Analog input status. Analog input status values can be read from Global Variables IO_Xx_ST_yy. Where x represents the expansion slot number 1...4, and yy represents the status word number 00...02. Individual bits within a status word can be read by appending a .zz to the Global Variable name, where zz is the bit number 00...15. _IO_Xx_CO_00 represents Global Variables for Control bit states.  Control bit states can be written to Global Variable _IO_Xx_CO_00.zz, where x represents the expansion slot number 1…4 and zz represents the bit number 00…12.\n </s>