Delta Electronics DVP15MC11T, Руководство по эксплуатации

Страница: 86 / 601

Chapter 8 Logic Instructions
8_
8.3.5 SEMA
FB/FC Explanation
Applicable
model
FB
SEMA is used for giving priority to CLAIM. (The output will be valid in the
second period.)
DVP15MC11T

Parameters
Parameter
name
Meaning
Input/
Output
Description Valid range
CLAIM
Input
signal
Input
Set signal TRUE or FALSE
RELEASE
Input
signal
Input
Reset signal TRUE or FALSE
Q
Output
signal
Output Output signal TRUE or FALSE
B
ool
ean
Bit string Integer
Real
number
Time, date
St
rin
g
B
O
O
L
BYT
E
WO
RD
D
WO
R
D
L
W
O
R
D
U
SI
N
T
U
IN
T
U
DI
NT
U
L
INT
SI
N
T
IN
T
D
IN
T
L
IN
T
R
EAL
L
R
EAL
T
IM
E
D
AT
E
TOD D
T
ST
R
IN
G
CLAIM
●
RELEASE
●
Q
●
Note:
The symbol
●
indicates that the parameter is allowed to connect to the variable or constant of the data type.

Function Explanation
When CLAIM of SEMA is TRUE, Q is TRUE. When RELEASE is TRUE, Q is FALSE. When CLAIM and
RELEASE are both TRUE, Q is TRUE.

Precautions for Correct Use
When CLAIM is TRUE, Q will be TRUE in the second period.

Programming Example

The variable table and program
Variable name Data type Initial value
SEMA1 SEMA
SEMA1_EN BOOL FALSE
SEMA1_CLAIM BOOL FALSE
SEMA1_RELEASE BOOL FALSE
SE MA
EN E NO
CL AIM
Q
SEMA_ in sta nce
RELEA SE
8-15