4.4 Clear Alarm or Warning Subcommand (ALM_CLR: 06h)
4-5
4
S
ubcommand
s
4.4
Clear Alarm or Warning Subcommand (ALM_CLR: 06h)
Data Format
Command Parameters
The details of ALM_CLR_MOD are described below.
Phases in which the
Command can be Executed
2, 3
Command
Classification
Common
command
Asynchronous
command
Processing Time
Refer to the
specifications of
ALM_RD_MOD
Subcommand
Byte
ALM_CLR
Description
Command
Response
32
06h
06h
•
The ALM_CLR subcommand clears the alarm or warning
state. It changes the state of a slave station, but does
not eliminate the cause of the alarm or warning. ALM_-
CLR should be used to clear the state after the cause of
the alarm or warning has been eliminated.
•
Confirm the completion of the subcommand execution
by checking that RSUBCMD = ALM_CLR (= 06h) and
SUB_STAT.SBCMDRDY = 1.
In the following cases, an alarm will occur and the sub-
command will not be executed.
•
When the ALM_CLR_MOD data is invalid:
SUBCMD_ALM = 9h (A.94B)
•
While editing using SigmaWin or digital operator:
SUBCMD_ALM = Ah (A.95A)
33
SUB_CTRL
SUB_STAT
34
35
36
ALM_CLR_MOD
ALM_CLR_MOD
37
38
Reserved
Reserved
39
40
41
42
43
44
45
46
47
ALM_CLR_MOD
Description
Processing Time
0
Clearance of the current alarm or warning state
Within 200 ms
1
Clearance of the alarm history
Within 2 s
