ABB DCS550 - Page 129

129
AP
3ADW000379R0501 DCS550 Manual e e
Operation
Set/reset block. IN1 (S) sets OUT. IN2 (R) or IN3 (R) reset OUT. If IN1, IN2 and IN3 are false,
the current value remains at OUT. The SR is reset dominant. Truth
table:
IN1
IN2
IN3
OUT (binary)
OUT (value on display)
0
0
0
no change
no change
0
0
1
false (all bits 0)
0
0
1
0
false (all bits 0)
0
0
1
1
false (all bits 0)
0
1
0
0
true (all bits 1)
-1
1
0
1
false (all bits 0)
0
1
1
0
false (all bits 0)
0
1
1
1
false (all bits 0)
0
Connections
IN1, IN2 and IN3: boolean
OUT: 16 bit integer (15 bits + sign)
Switch
-B
Logical function
Illustration
Operation
OUT is equal to IN2 if IN1 is true. OUT is equal to IN3 if IN1 is false.
IN1
OUT
0
= IN3
1
= IN2
Connections
IN1: boolean
IN2 and IN3:
boolean
OUT: 16 bit integer (packed boolean)
Switch
-I
Arithmetical function
Illustration
Operation
OUT is equal to IN2 if IN1 is true. OUT is equal to IN3 if IN1 is false.
IN1
OUT
0
= IN3
1
= IN2
Connections
IN1: boolean
IN2 and IN3:
16 bit integer (15 bits + sign)
OUT: 16 bit integer (15 bits + sign)