Function Blocks
3.2.87 RSF_ - RS Flip-Flop
RSF_ function blocks perform a reset dominant flip-flop
function as detailed in the truth table. An unused S input
will be set high (1) and an unused R input will be set low
(0).
RS FLIP-FLOP TRUTH TABLE
R
S
LO
R
1
X
X
Reset
.
S
0
1
X
Set
0
0
1
0
0
0
R - RESET Input
LO - Last Output
S - SET Input
O1 - Output
X (don't care)
BLOCK DIAGRAM
3.2.88 RTG_ - Rising Edge Trigger
RTG_ function blocks provide a high (1) output for one scan
cycle each time input P transitions from a low (0) to a high
(1).
P
.
BLOCK DIAGRAM
3.2.89 RTT_ - Real Time clock Trip (V2.0)
RTT_ function blocks provide high (1) outputs when time
from the CLOCK block coincides with the TIME, DATE, &
DAYS of the Week TRIP settings. The block outputs will
remain high while the CLOCK coincides with the settings
3-94
O1
0
O1
Output 1
1
.
1
0
POWER UP - During a warm start, when PU LAST is set to
YES, the block will initialize at the input/output states at the
instant power down occurred. A cold start will initialize the
input/output states to 0.
Output 1
O1
.
Pulse Input
RS FLIP-FLOP
RSF_
ESN = 000
R
Reset
RS FLIP-FLOP
S
Set
P U
L
A
S
T
Power Up LAST
(S)
P
U
I
N
T
R
INPUT R
...........
(H)
I
N
P
U
T
S
INPUT S
...........
(H)
E
S N
Exec. Seq. No.
.................. 001 to 250
(H)
RISING EDGE TRIGGER
RTG_
ESN = 000
RISING EDGE
Pulse Input
P
TRIGGER
I
N
P
U
T
P
........
INPUT P
(H)
E S N
Exec. Seq. No.
(H)
REAL TIME TRIP
RTT_
TiMe Trip
TM
1 7
:
3 6
: 1 6
TIME
DT
DaTe Trip
DY
MNTH
1 2
DAY
3 0
YEAR
1
9
9 9
DaYs Trip
DAYS
0 1 1 1 1 1 0
S
M T
W T
F
S
T
I M
E
T R P
TIME TRiP
...... 00:00:00 - 23:59:59
(S)
D A Y
S
T R P
DAYS TRiP
..................... SMTWTFS
(S)
M N
T
H
T R P
MNTH TRiP
........................... 01 - 12
(S)
D
A
Y
T R P
.............................. 01 - 31
DAY TRiP
(S)
Y E
A
R
T R P
YEAR TRiP
.................... 1970 -3099
(S)
UM353-1
O1
Output 1
................... NO/YES (YES)
loop tag.block tag.output
(null)
loop tag.block tag.output
(null)
O1
Output 1
loop tag.block tag.output
(null)
.............. 001 to 250
TiMe Trip
DaTe Trip
DaYs Trip
(0)
(1111111)
(01)
(01)
(1999)
Rev. 2
March 2003