Справочник Пользователя для Mitsubishi Electronics QD64D2

Скачать
Страница из 154
5
FUNCTIONS
5.2 Selecting a Counter Format
5.2.2 Selecting the ring counter
5
 - 5
1
O
V
ER
VI
E
W
2
S
YST
EM
 
CONF
IGURA
T
ION
3
S
P
E
C
IF
ICA
T
IONS
4
P
R
O
C
EDURES
 AND 
S
E
T
T
INGS
 B
E
F
O
RE
 
OP
E
R
A
T
ION
5
F
UNCT
IONS
6
UT
IL
IT
Y
 P
A
CK
A
G
E
 (
G
X
 
C
onfi
gurato
r-C
T
)
7
P
R
OGRA
M
MING
8
TR
O
U
BL
ESHO
O
T
IN
G
5.2.2
Selecting the ring counter
(1) Ring counter operation
(a) For the ring counter, the counting is executed repeatedly within the range set by 
the ring counter lower limit value (Un\G0 and 1) and the ring counter upper limit 
value (Un\G2 and 3).  
Overflow error does not occur.
Figure 5.2 Operation image of the ring counter
(b) The following functions can be used in combination.
 • Counter value comparison function (Coincidence output function, continuous 
comparison function)
 • Coincidence detection interrupt function
 • Preset function
 • Latch counter function
+2147483647
Ring counter upper limit value (Un\G2 and 3)
Ring counter lower limit value (Un\G0 and 1)
-2147483648
Present value
Addition
Subtraction
0