Mitsubishi MELSEC-A Series Operating Manual page 148

6. HOW
T 9
USE EACH FUNCTION
I
. .
M E L S G A
6.9.6 Monitoring the clock data
of
an ACPU ( c l o c k monltoring)
This operation monitors clock data (D9025 to D9027) of an ACPU.
[Basic operation]
[Operation example]
When clock data is monitored
1 0
ISHIFTHOTHERS I
0 1 3 1
2
PLC
CBBCK
3
PLC
STSTBY
Select the OTHERS mode.
Select "3:PLC SYSTEM'.
2
ALL CLBAR
3
PC
BO.
HAII/wB
Select '1:MONITOR".
0 BUFPBR
IIBY.
MOM
3 CLOCK MOUITOR
I
1 0 . 3 5 . 4 8
I
Select '3:CLOCK MONITOR".
Clock data is displayed.
Top : Year, month, and day
are displayed.
Bottom: Hour, min, and sec are
displayed.
[Explanation]
(1) The clock data
of an ACPU is monitored by using the information
in
D9025 to D9027 of the connected station.
(2) When monitoring is started and completed, the A8PUE turns M9028 ON
and OFF automatically.
(3) Do not perform this operation for an ACPU which doesn't have a clock
function.
If
clock monitoring is executed for an ACPU without a clock function, an
operating error will not occur. However, meaningless
data (value of
D9025 to 09027) is displayed.
(4)
Pressing the [END] or [CLEAR] keys returns to the
"1
:MONITOR" menu.
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