B
Communication Command Guide
B-20
Alarm/warning information reading (?ALM, ?WARN)
Format
@?ALM<alarm occurrence number>[.<node number>] c/r l/f
@?WARN<warning occurrence number>[.<node number>] c/r l/f
Meaning
Reads the alarm/warning information currently occurring.
Function
Reads the alarm/warning information currently occurring.
TIP
For details regarding the alarm and warning numbers and their contents, see Chapter 6 "Troubleshooting" of the
Controller Guide.
Setting
<Alarm/warning occurrence number> : 1 to 32
<Node number>
: 1 to 16 (This setting can be omitted when the same command is sent to all the
controllers connected with the host device, as by daisy chain connection.)
n
NOTE
If multiple alarms and warnings occur, the alarm/warning occurrence numbers are sequentially assigned to 1, 2,
and so on from a smaller alarm number.
Example) If overload (86) and emergency stop (C1) occur, the alarm occurrence numbers are assigned as follows.
Alarm occurrence number 1 = 86 (overload)
Alarm occurrence number 2 = C1 (emergency stop)
Communication example
Transmission
Response
@?ALM1.1 c/r l/f
Reads the alarm information.
ALM1.1=86 c/r l/f
Receives the data. Alarm number 86: Overload error is occurring.
OK.1 c/r l/f
Normal end
@?WARN1.1 c/r l/f
Reads the warning information.
OK.1 c/r l/f
Normal end (No warning occurs.)
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