Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual page 481

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Active Nodes (Nodes 16 to 31)
(1)
Address
S:10
(1) This bit can only be accessed via ladder logic. It cannot be accessed via communications (such as a Message
instruction from another device).
This address is duplicated in the Communications Status File (CSx:0.28).
SeeActive Node Table Block on page 69 for more information.
Math Register
Address Data Format
S:13 word
(low byte)
S:14 word
(high byte)
These two words are used in conjunction with the MUL, DIV, FRD, and
TOD math instructions. The math register value is assessed upon
execution of the instruction and remains valid until the next MUL, DIV,
FRD, or TOD instruction is executed in the user program.
Node Address
(1)
Address
S:15 (low byte)
(1) This byte can only be accessed via ladder logic. It cannot be accessed via communications (such as a Message
instruction from another device).
This address is duplicated in the Communications Status File (CSx:0.5/0
through CSx:0.5/7). SeeGeneral Channel Status Block on page 58 for more
information.
Data Format Range
word 0 to FFFF
Range
-32,768 to
+32,767
-32,768 to
+32,767
Data Format Range
byte 0 to 255
System Status File
Type User Program Access
status read only
Type User Program Access
status read/write
status read/write
Type User Program Access
status read only
Publication 1763-RM001C-EN-P - October 2009
481