
2–28 How Communication Takes Place and I/O Image Table Mapping
/'%.%*) 5 *0!(!,
1794ĆIT8 Word/Bit Descriptions
Word
Decimal Bit
(Octal Bit)
Description
! *, !-!,0!
! *, $))!' )+/. .
! *, $))!' )+/. .
! *, $))!' )+/. .
! *, $))!' )+/. .
! *, $))!' )+/. .
! *, $))!' )+/. .
! *, $))!' )+/. .
! *, $))!' )+/. .
! *,
Underrange bits - .$!-! %.- ,! -!. %" .$! %)+/. -%#)' %- !'*1 .$! %)+/. $))!'- (%)%(/( ,)#!
Overrange bits - .$!-! %.- ,! -!. %" .$! %)+/. -%#)' %- *0! .$! %)+/. $))!'- (2%(/( ,)#!
*, ) *+!) !.!.*, %- !.!.!
! *,
*' /).%*) -!)-*, /) !,,)#! %. .$%- %. %- -!. %" .$! *' &/).%*) .!(+!,./,! %- !'*1
*
*' /).%*) -!)-*, *0!,,)#! %. .$%- %. %- -!. %" .$! *' &/).%*) .!(+!,./,! %- *0!
*
Bad Structure - .$%- %. %- -!. %" .$!,! %- ) %)0'% .$!,(**/+'! .3+! -!'!.!
Powerup bit - .$%- %. %- -!. /).%' *)"%#/,.%*) . %- ,!!%0! 3 .$! (* /'!
Critical Fault bits - " .$!-! %.- ,! )3.$%)# *.$!, .$) 4!,* ,!./,) .$! (* /'! .* .$! ".*,3 "*, ,!+%,
)/-! -!. .*
Calibration Range bit - -!. .* %" ,!"!,!)! -%#)' %- */. *" ,)#! /,%)# '%,.%*)
Calibration Done bit - -!. .* ".!, ) %)%.%.! '%,.%*) 3'! %- *(+'!.!
Calibration Bad bit - -!. .* %" .$! $))!' $- )*. $ 0'% '%,.%*)
)/-! -!. .*
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