Manual
1 Technical Description
1.5 Functional Description
1.5.7 Basic Functions (Arithmetic blocks b)
SIPART DR24 6DR2410
C79000-G7476-C153-03
47
NOR function
A = E1
∨
E2
∨
E3 = E1
∧
E2
∧
E3
with default: A = E1 (Negation of E1)
E1
E2
E3
A
0
0
0
1
1
0
0
0
0
1
0
0
1
1
0
0
0
0
1
0
1
0
1
0
0
1
1
0
1
1
1
0
Exclusive OR function (EXOR)
A = (E1
∧
E2)
∨
(E1
∧
E2) = (E1
∨
E2)
∧
(E1
∨
E2)
E1
E2
A
0
0
0
1
0
1
0
1
1
1
1
0
T--flip--flop
Every positive edge at T = E1
∧
E2 (toggle) flips the
output to the respective other position. High at E3
(Reset) sets A to low and blocks E1 and E2.
E1 (T1) E1 (T2)
E3 (R)
A (Q)
Remarks
x
x
1
0
1
0
Qo
→
Qo
Q flips to the
1
↗
0
Qo
→
Qo
Q flips to the
other position
0
x
0
Qo
saved
x
0
0
Qo
saved
D--flip--flop
Every positive edge at E2 (C = Clock) sets A to E1 (D
= file). Hi at E3 (R = Reset) sets A to low and blocks
E2.
E1 (D)
E2 (C)
E3 (R)
A (Q)
Remarks
x
x
1
0
1
↑
0
1
0
↑
0
0
x
0/1
0
Qo
saved
If shift registers are switched with the D--flip--flop, the
positioning must be reversed due to the serial proc-
essing, i.e. the first stage is processed last.
ncon
≥
1
Lo
Lo
.A
#
b
.F
--
#
.1
#
.2
#
.3
n ---
nor
ncon
ncon
= 1
.A
#
b
.F
--
#
.1
#
.2
n ---
Eor
ncon
T
1
T
2
Q
R
T
&
Hi
Lo
.A
#
b
.F
--
#
.1
#
.2
#
.3
n ---
tFF
Restart conditions after
power failure:
Power on
Output A
bAtt = no
0
bAtt = YES
last status
(hdEF)
ncon
Lo
Hi
Q
D
C
R
.A
#
b
.F
--
#
.1
#
.2
#
.3
n---
dFF
Restart conditions after
power failure:
Power on
Output A
bAtt = no
0
bAtt = YES
last status
(hdEF)
Содержание 6DR2410
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