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10. SYSTEM MENU OPERATION IN MONITOR MODE
MELSEC-A
(2)
Display contents
(a) Display contents when a screen is selected
The 16 most recent announcements are displayed along with (a)
their announcement messages, and (b) the date and time of their bit
device leading edges.
The time, however, is only displayed when a PC CPU equipped with
the G-controller module is one of the following modules: (otherwise
"00" is displayed)
A1SCPU
A1NCPU(P21/R21)
A2NCPU (P21 /R21 )(S1)
A3NCPU(P21/R21)
A2ACPU (P21 /R21) (S1)
A3ACPU(P21/R21)
(b) Announcement message display mode
An announcement message in which "Alarm" is set to ON in the Set
announcements list is highlighted when displayed;
Other announcements messages (normal messages) are displayed
as usual.
(c) Confirming that a bit device is ON
An announcement message in which "Alarm" is set to ON in the Set
announcements list is displayed along with the corresponding bit
device that is ON.
The bit device status in other announcement messages can be
confirmed by examining the actual message.
(3)
Operations after displaying the announcements screen
(a) Scroll display
Scroll the screen line by line using the
[IJ
or
Il l
keys.
(b) Screen switching
Use the [F4] key to switch the screen to the system menu screen
(see item (1)).
(c) Announcement message deletion
When the G-controller module starts up, it clears all messages.
During monitoring, announcement messages cannot be cleared by
the user.
10-6
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