ABB DCS550 - Page 130

130
AP
3ADW000379R0501 DCS550 Manual e e
TOFF
Logical function
Illustration
Operation
OUT is true when IN1 is true. OUT is false when IN1 has been false for a time >= IN2. OUT
remains true as long as IN1 is true plus the time defined in IN2.
Connections
IN1:
boolean, input
IN2:
16 bit integer; delay time in ms (IN3 = false) or s (IN3 = true)
IN3:
boolean; determines unit of time
OUT: 16 bit integer (packed boolean); result with values on display: True = -1, false = 0
TON
Logical function
Illustration
Operation
OUT is true when IN1 has been true for a time >= IN2.
Connections
IN1: boolean, input
IN2:
16 bit integer; delay time in ms (IN3 = false) or s (IN3 = true)
IN3:
boolean; determines unit of time
OUT: 16 bit integer (packed boolean); result with values on display: True = -1, false = 0
Trigg
Logical function
Illustration
Operation
The rising edge of IN1 sets OUT bit 0 for one program cycle.
The rising edge of IN2 sets OUT bit 1 for one program cycle.