Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 155)

Publication 1760-UM002B-EN-P - March 2005
Wiring with Pico GFX-70 4-45
Arithmetic Function Block Modes
Value Range
The function block operates in the integer range from
-2147483648 to +2147483647.
Behavior when value range is exceeded
• The function block sets the switching contact AR..CY to status 1.
• The function block retains the value of the last valid operation. The
value is zero when it is first called.
Displaying the Parameter Set in the PARAMETERS Menu
• + Access enabled
• - Access disabled
Contacts
AR01CY to AR32CY: CARRY overflow bit, value on function block output
greater than or less than the value range.
AR01ZE to AR32ZE: ZERO zero bit, value on function block output is equal
to zero.
Coils
The arithmetic function block does not have any coils.
Memory Requirement of the Arithmetic Function Block
The arithmetic function block requires 40 bytes of memory plus 4 bytes per
constant on the function block inputs.
Addition
42 + 1000 = 1042
2147483647 + 1 = last valid value of this arithmetic operation, due to
overflow (CARRY)
AR..CY = Status 1
Parameter Function
ADD Addition of summand value
>I1
plus summand
>I2
SUB Subtraction of minuend >I1 minus subtrahend >I2
MUL Multiplication of factor
>I1
by factor
>I2
DIV Division of dividend >I1 by divisor >I2