ABB DCS550 Series, Manual

Page: 124 / 316

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3ADW000379R0501 DCS550 Manual e e
Limit
Logical function
Illustration
Operation The value, connected to IN1 will be limited with IN2 as upper limit and IN3 as lower limit. OUT
is the limited input value. OUT stays 0, if IN3 is >= IN2.
Connections IN1: 16 bit integer (15 bits + sign); value to be limited
IN2: 16 bit integer (15 bits + sign); upper limit
IN3: 16 bit integer (15 bits + sign); lower limit
OUT: 16 bit integer (15 bits + sign); limited value
MaskSet
Logical function
Illustration
Operation The block sets or resets the bits in IN1 and IN2.
Example:
Single bit
IN3 = set IN3 = reset
IN1 IN2 IN3 OUT IN1 IN2 IN3 OUT
0 0 true 0 0 0 false 0
1 0 true 1 1 0 false 1
1 1 true 1 1 1 false 0
0 1 true 1 0 1 false 0
Example:
Whole word with IN3 = set
Whole word with IN3 = reset
Connections IN1: 16 bit integer (packed boolean); word input
IN2: 16 bit integer (packed boolean); word input
IN3: boolean; set / reset IN2 in IN1
OUT: 16 bit integer (packed boolean); result