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7. AUXILIARY FUNCTION
7.17.3 Interface
(1) System Command/Status Bit
System command/status bits related to alarm history function are shown below.
System command
System status
Address Bit Abbreviation
Signal
name
Address
Bit
Abbreviation
Signal
name
03E1 0 SMPS Sampling
start
0451 0
SMPW Waiting
for
sampling
trigger
1
Reserved
1
SMPO
Sampling is being performed
2
2
SMPF
Sampling
is
complete
3
3
SMPE
Sampling
Error
4
4
Reserved
5
5
AHINF
Alarm history information
6
6
Reserved
7
7
System command
System status
Address Bit Abbreviation
Signal
name
Address
Bit
Abbreviation
Signal
name
03F7
0
ALHR
Alarm history read command
0467
0
ALHRF
Alarm history read complete
1
Reserved
1
ALHRE
Alarm history read error
2
ALHI
Alarm history initialization
command
command
2
ALHIF
Alarm history initialization
complete
complete
3
Reserved
3
ALHIE
Alarm history initialization
error
error
4
4
Reserved
5
5
6
6
7
7
(a) Details concerning system command bits
Abbreviation Signal
name
Function
details
ALHR
Alarm history read
command
command
[Function]
Reads the alarm history stored in the alarm history buffer area (flash ROM) to the
alarm history table on the dual port memory.
[Operation]
When the alarm history read command signal (ALHR) is turned on, the alarm history
for the page number set as the alarm history read page number is read to the alarm
history table. When reading of alarm history is complete, the alarm history read
complete signal (ALHRF) is turned on or alarm history read error signal (ALHRE) is
turned on.
Reads the alarm history stored in the alarm history buffer area (flash ROM) to the
alarm history table on the dual port memory.
[Operation]
When the alarm history read command signal (ALHR) is turned on, the alarm history
for the page number set as the alarm history read page number is read to the alarm
history table. When reading of alarm history is complete, the alarm history read
complete signal (ALHRF) is turned on or alarm history read error signal (ALHRE) is
turned on.
ALHI Alarm
history
initialization command
[Function]
Initialization of the alarm history stored in the alarm history buffer area(flash ROM)
[Operation]
When the alarm history initialization command signal (ALHI) is turned on, the alarm
history is initialized and the number of valid alarm history events are 0 cleared.
Initialization of the alarm history stored in the alarm history buffer area(flash ROM)
[Operation]
When the alarm history initialization command signal (ALHI) is turned on, the alarm
history is initialized and the number of valid alarm history events are 0 cleared.