Rockwell Automation 1772-LS_LSP,D17726.8.6 PROG/OPER MANUAL-MINI PLC-2/05 - Manual (Page 94)

Math Instructions
Chapter 10
10Ć6
Figure 10.2
Data Address Format
X S X X M L K
X X X X J H G
X X X X F E D
X X X X C B A
M L K J H G F E D C B A
•
implied and not displayed.
Operand A is displayed in the 1770ĆT3 industrial terminal like this:
Operand A is stored in the data table like this:
Integer High Word
Integer Low Word
Decimal High Word
Decimal Low Word
17 16 15 14 10 7 4 3 0
S = Sign Bit
X = Additional Storage Bits
13
Important: Valid data addresses include the I/O image table and the data table
(except word 027). Specifically, valid addresses are from 010 to 026, from 030
to 077, and from 110 to the end of the data table. Data addresses and result
addresses must not reside in the input image table.
The most significant four bits of the integer high word of the data address
(Figure 10.2) are reserved for status bits.
bit 17 - not used
bit 16 - sign (+/-)
bit 15 - not used
bit 14 - not used
There is an implied decimal point between the integer low word and the decimal
high word. The decimal point is implied but not displayed (Figure 10.2).