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5. MONITOR FUNCTIONS AND THEIR USE
MELSEC-A
5.11 Monitoring Function to Turn ON a Bit Device Between Specified Times (Auxiliary Func-
tion... Time Action)
[Function]
This function is used to keep up to eight points of bit devices ON from a
specified time to another specified time using the clock data of the PC CPU
in which the G-controller module is installed.
Using this function makes it easier to control bit devices in accordance with
the PC CPU clock data.
(1)
PC CPUs that can use this function:
A1SCPU
A 1NCPU(P21/R21)
A2NCPU(P21/R21 )(Sl)
A3NCPU(P21/R21)
A2ACPU(P21/R21)(Sl )
A3ACPU(P21/R21)
•
(2)
Bit device ON/OFF control
The G-controller turns bit devices ON and OFF in accordance with the
current PC CPU clock data.
When the G-controller module starts up, changing the clock data turns
ON the corresponding bit device, if the changed clock data is within the
range to turn ON the bit device.
Example:
Keeping Y101 turned ON between 8:00 to 19:00 from Monday
to Friday
~-----(Mon)
- - - - - - - + j + - - ( T u e ) - - _ > l ' I I - (Fri)---->i
I'
•
II
9:00
9:00
8:00
---.J
i
Starting time
10:00 18:00
19:0024:00 8:00
18:00
19:00
--+--+-----111-i11-1
-I---+I-iII-+-i1-1I---+---i I--+---+I-il
"
,
,
,
,
''----------l
'
11--------.1 :
J'
II-I
--------.Ii
L+-- H--
i1 ,
'+-
. .
,
r
r
t
Completion time
Starting time
Completion time
ON
OFF
Y101
5-164
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