Rtrig - ABB ACSM1 Firmware Manual

326
Operation
Inputs
Outputs

RTRIG

(10031)
Illustration
Execution time
Operation
Inputs
Outputs
Standard function blocks
The output (Q1) is 0 if the set input (S) is 1 and the reset input (R) value is 0. The output
will retain the previous output state if the set input (S) and the reset input (R) are 0. The
output is 0 if the set input is 0 and the reset input is 1.
Truth table:
S R Q1
previous
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
Q is the previous cycle output value.
previous
Set input (S): Boolean
Reset input (R): Boolean
Output (Q1): Boolean
TLA1 1 msec
>CLK
0.38 µs
The output (Q) is set to 1 when the clock input (CLK) changes from 0 to 1. The output is
set back to 0 with the next execution of the block. Otherwise the output is 0.
CLK CLK
previous
0 0
0 1
1 0
1 1
CLK is the previous cycle output value.
previous
Note: The output is 0 after cold restart and after the first execution of the RTRIG block.
Otherwise the output is 1, when the clock input is 1.
Clock input (CLK): Boolean
Output (Q): Boolean
Q1
0
1
0
0
1
1
0
0
RTRIG
47
(1)
Q
Q
0
1
0
0
Q(47)