GE PACSystems RX7i Cpu Programmer's Reference Manual page 91

Chapter 4. Ladder Diagram (LD) Programming
Operands for Logical AND, OR, and XOR
Parameter
Length (??)
IN1
IN2 (Must be the same
data type as IN1.)
Q (Must be the same data
type as IN1.)
Example: Logical AND
When input v_I0001 is set, the 16-bit strings represented by variables WORD1 and WORD2 are
examined. The logical AND places the results in output string RESULT.
Example: Logical XOR
Whenever V_I0001 is set, the bit string represented by the variable WORD3 is cleared (set to all
zeroes).
76 PACSystems* RX7i, RX3i and RSTi-EP CPU Programmer's Reference Manual
Description
The number of words in the bit string
on which to perform the logical
operation. 1  Length  256.
The first WORD or DWORD of the
first string operate on.
The first WORD or DWORD of the
second string to operate on.
The first WORD or DWORD of the
operation's result.
Allowed Operands
Constant
All
All
All except constants and
variables located in %S memory
Optional
No
No
No
No
GFK-2950C