XIO [Examine if Open] & XIC [Examine if Closed] Explained


XIO [Examine if Open] & XIC [Examine if Closed] Explained

XIO [Examine if Open] Explained

 Use with processors: All SLC and MicroLogix
processors

 
Example of Instruction:

Description
This
instruction (also called “examine off” or “normally
closed”) functions as an input or storage bit. If the corresponding memory
bit is a “1” (on), this instruction will not allow rung continuity
and outputs on its rung will be de-energized. (Note Other factors may affect
rung continuity.)
If
the corresponding memory bit is a “0” (off), this instruction will
assume its normal status and allow rung continuity and outputs on the rung will
be energized. (Again, other factors can influence rung continuity.)
If
used as an input bit, its status should correspond to the status of real world
input devices tied to the input image table by the identical addresses.

 Addressing Help

Sample: I:
12/03
In
the sample address, “I” indicates input image table; “12”
represents slot twelve (decimal); after the slash “/” the
“03” indicates bit three.Note Slot 0 is reserved for the processor. Input
addresses are specified to the bit level.
 

XIC [Examine if Closed] Explained

Use
with processors: All SLC and MicroLogix processors          
Example of
Instruction:    

 Description
This instruction (also called “examine on” or
“normally opened”) functions as an input or storage bit. If the
corresponding memory bit is a “1” (on), this instruction will allow
rung continuity and outputs will be energized.
Note:
Other factors may affect rung continuity.
If the corresponding memory bit is a “0” (off), this
instruction will not allow rung continuity (it assumes its normally open state)
and outputs on the rung will be de-energized (other factors can influence rung
continuity).
If used as an input bit, its status should correspond to the
status of real world input devices tied to the input image table by the
identical addresses.

 Addressing Help

Sample:
I:12/03
In
the sample address, “I” indicates input image table; “12”
represents slot twelve (decimal); after the slash “/” the
“03” indicates bit three.
Note:
Slot 0 is reserved for the processor. Input addresses are specified to the bit
level.

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