448 Rockwell Automation Publication 1444-UM001D-EN-P - June 2018
Appendix A CIP Objects
Dynamix Measurement
Alarm Object
The measurement alarm object (class code 0x396) defines configuration of
two-stage individual measurement alarms and provides access to the associated
alarm status. Defined, and enabled, measurement alarms can be used as input
for logical alarms (voted) and/or be used as non-latching intermediate virtual
alarm status.
Class attributes and services allow for alarm history information.
Unused instances exist and are accessible but have a disabled state.
Table 179 - Object Instances
Instance ID Description
0 Measurement Alarm Class Instance
1…24 Alarm Measurement object instances 1…24
Table 180 - Class Attributes
Attribute
ID
Access
Rule
NV Name Data
Type
Description of
Attribute
Semantics of Values
1 Get NV Revision UINT Current object revision. Current revision.
8 Get V Active
Instances
DWORD Defines the active
measurement alarms.
Bit coding (24 used)
9 Get V Common
Alert
BOOL Boolean status
indicating presence of at
least one alert condition.
10 Get V Common
Danger
BOOL Boolean status
indicating presence of at
least one danger
condition.
11 Get V Common TX
Fail
BOOL Boolean status
indicating presence of at
least one TX Fail
condition.
12 Get V Alarm
History
STRUCT Array of events (Time
Stamp, measurement
output, alarm status)
that represent last x
number of entries. A
change in the alarm
status triggers an entry.
Table 181 - Instance Attributes
Attribute
ID
Access
Rule
NV Name Data Type Description of
Attribute
Semantics of
Values
1 Get V Individual Alarm
Status
BYTE/WORD Bit coded individual
measurement alarm
status.
Status options
General Alarm Configuration Group of six configuration attributes.
16 Get V Alarm Enable SINT Boolean function that
indicates if the alarm is
enabled (and defined).
0: Not enabled
1: Enabled
17 Get V Alarm
Measurement
Identifier
INT Defines source of
measurement alarm.
Source selection
18 Get V Alarm Name SINT[32] A name to identify this
alarm instance.
32 characters
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