Rockwell Automation 1758-RTU202 DataSite Software User Manual FRN 1.2 - Manual (Page 172)

Publication 1758-UM002D-EN-P - October 2010
172 DataSite Flow Configuration Utility (DS FloConfig)
Understand the Alarm Record Format
An alarm record consists of the following components:
• ID: the serial number of the alarm record. The range of the ID is
0…65535. Once the number of records exceeds 65535, the ID starts
from 0 again.
• Time: the date and time that the record is created. The date is in the
format, year-month-day, and time is in the format, hour:minute:second.
• Type: See the following table, Descriptions of alarm event types .
• Variable: Three fixed variables for each meter run and 40 variables for
user defined registers.
• Value: the current value of the variable.
Alarm Event Types
This table provides a list of alarm event types and their descriptions
Descriptions of alarm event types
Event Type Variable or
Registers Conditions
Hi limit DP/PI, T, P or
30001…49999 The differential pressure (AGA3) or the pulse count
per second (AGA7) is higher than the Hi limit for meter
run 0…7
Lo limit The differential pressure (AGA3) or the pulse count
per second (AGA7) is lower than the Lo limit for meter
run 0…7.
Hi recovery The differential pressure (AGA3) or the pulse count
per second (AGA7) is lower than the Hi limit minus the
dead band for meter run 0…7.
Lo recovery The differential pressure (AGA3) or the pulse count
per second (AGA7) is higher than the Lo limit plus
dead band for meter run 0…7.