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Note 1: Individual bits of bytes which determines a quality byte (SIQ for ASDU 1,2,30; DIQ for ASDU 3,4,31; QDS for 5-14,20,32-36) set the attributes FLA (0.bit), FLB (1.bit) ..FLH (7.bit).Kotva poz1 poz1
Example:
for ASDU 4: FLA=DPI bit 0, FLB=DPI bit 1, FLC=0, FLD=0, FLE=BL bit, FLF=SB bit, FLG=NT bit, FLH=IV bit.
for ASDU 16: FLA..FLE Sequence number bity bits 0..4, FLF=CY bit, FLG=CA bit, FLH=IV bit
And
Moreover:
- if bit IV (Invalid) is set, the status of value will be Invalid
- if one of the NT (Not topical), SB (Substituted), BL (Blocked), OV (Overflow), CA (Counter adjusted), or CY (Counter overflow) bits are set for in their respective ASDU types, the status of value will be Weak.
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