
2–52 How Communication Takes Place and I/O Image Table Mapping
3"+)#!2).- 8 .4%,"%0
Definition
Decimal Bit
(Octal Bit)
Word
)21 %1%04%$
)21 Calibration Done bit (DN). ()1 ")2 )1 1%2 2. !&2%0 ! #!+)"0!2).- #6#+% )1 #.,/+%2%$
)2
Calibration Bad bit (BD). ()1 ")2 )1 1%2 2. )& 2(% #(!--%+ #!+)"0!2).-- #.%&&)#)%-21
#!--.2 "% 1!4%$ .0 "% 0%!$ /0./%0+6
)21 %2 2.
)21
%1%04%$
.0
)2 %2 2.
)2
Configuration mode bit (CF) ()1 ")2 )1 1%2 5(%- 2(% #!+)"0!2).- ,.$% )1
1%+%#2%$ ")2 5.0$ )- 2(% "+.#* 20!-1&%0 50)2% 1%2 2.
)2
Field Power Off bit (FP) ()1 ")2 )1 1%2 5(%- 2(% &)%+$ /.5%0 &!)+1 (%-
2()1 ")2 )1 1%2 2(% ,.$3+% 12!231 )-$)#!2.0 &+!1(%1
)2
Power Up (unconfigured state) bit (PU). ()1 ")2 )1 1%2 5(%- 2(% #.-&)'30!2).-
5.0$ )1 !++ 7%0.%1 $3% 2. ! 0%1%2 !$!/2%0 /.5%0 #6#+% .0 ,.$3+% )-1%02).- .0 !
#+%!0%$ #.-&)'30!2).- 5.0$ !++
)21
Underrange bits (U). (%1% ")21 !0% 1%2 5(%- 2(% )-/32 #(!--%+ )1 "%+.5 !
/0%1%2 +),)2 !1 $%&)-%$ "6 2(% #.-&)'30!2).- 1%+%#2%$ ")2 #.00%1/.-$1 2. )-/32
#(!--%+ !-$ ")2 #.00%1/.-$1 2. )-/32 #(!--%+
)21
WireĆOff status bits. (W). (%1% ")21 5(%- 1%2 )-$)#!2% 2(% #.00%1/.-$)-'
#300%-2 .32/32 #(!--%+ )1 ./%- ")2 #.00%1/.-$1 2. #(!--%+ !-$ ")2
#.00%1/.-$1 2. #(!--%+
.0$
)21
Overrange bits (V). (%1% ")21 !0% 1%2 5(%- 2(% )-/32 #(!--%+ )1 !".4% !
/0%1%2 +),)2 !1 $%&)-%$ "6 2(% #.-&)'30!2).- 1%+%#2%$ )2 #.00%1/.-$1 2. )-/32
#(!--%+ !-$ ")2 #.00%1/.-$1 2. )-/32 #(!--%+
)21
.2 31%$ %2 2.
)21
Hold output bits (P). (%1% ")21 !0% 1%2 )- 0%1/.-1% 2. .0 !-$ !
20!-1)2).- .& 2(% ")2 (%- .0 )1 1%2 2(%6 )-$)#!2% 2(!2 2(% .32/32 )1
(.+$)-' !2 2(% +%4%+ )- 2(% 0%!$"!#* $!2! &.0 2(% 0%1/%#2)4% #(!--%+ (%1% ")21 0%230-
2. 5(%- 2(% .32/32 $!2! ,!2#(%1 2(% 0%!$"!#* .32/32 $!2!
)21
.2 31%$ %2 2.
0)2% .0$
)21
.2 31%$
)2
Safe State Source bits (S1/S0). (%- )1 2(%1% ")21 $%1)'-!2% 2(% 1.30#% .&
2(% 1!&% 12!2% $!2!
)2")20%1%2 .32/321 2. ,
)2")2(.+$ 2(% .32/32 !2 )21 #300%-2 +%4%+
)2 Output enable bit (EN). (%- 1%2 2(% .32/321 !0% %-!"+%$ ()1 ")2 ,312 "%
1%2 )- .0$%0 &.0 2(% 0%!+ 2),% $!2! 2. !//%!0 !2 2(% .32/321 & 2()1 ")2 )1 -.2 1%2 2(%
.32/321 5)++ "% $%2%0,)-%$ "6
.0$ )21
Output Channel 0 data. %&%0 2. !"+%
.0$ )21
Output Channel 1 data. %&%0 2. !"+%
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