Mitsubishi Electric Got 1000 Training Manual page 158

(2) Alarm collection mode
Select either of the two collection modes, historical mode or cumulative mode.
• Historical mode
In this mode, alarm contents are added to the memory built-in on GOT each
time alarms occur. (Each alarm occurrence is added to the history.)
Up to the following number of alarms can be stored depending on the units:
• For GT15: 3072 alarms
• Cumulative mode
Latest alarm status, alarm occurrence frequencies and times, are counted and
collected.
When an alarm occurs, the following information can be collected and displayed.
1) Occurrence date and time
The date/time of alarm occurrence is displayed.
2) Comment
The comment assigned to an alarm is displayed
when an alarm occurs.
3) Restoration date and time
The date/time of alarm restoration is displayed.
(3) Maximum number of device points and types of monitor devices being monitored
(a) Types of monitor devices
(b) Maximum number of monitored points
Point
Specifying monitor devices randomly to monitor bit devices
A bit device and a bit device (bit of word) cannot be mixed when specifying
monitor devices randomly.
1) 2)
• Bit device
• Bit device (bit of word)
• Word device (alarm is occurred when the device value falls in the
specified range)
GT15
• Bit device
• Word device (16-bit)
• Word device (32-bit)
GT11
• Up to 256 points regardless of the types of device being monitored
Appendix 4
• For GT11: 2048 alarms
3) 4) 5) 6)
4) Check date and time
The date/time when an alarm occurred was
checked is displayed.
5) Cumulative Time (cumulative mode only)
Total of alarm occurrence time including alarms
which occurred in the past is displayed.
6) Frequency of occurrences (cumulative mode
only)
The alarm occurrence frequency is displayed.
: 3072 points
: 1024 points
: 512 points