Event Log - Emerson Micro Motion 3711 Configuration And Use Manual

Administration
Table 14-2 Meter default values continued
Meter configuration parameter
Density Units
Temperature Units
Pressure Units
Communications Fault Action
Mass Flow Damping Period
14.5

Event log

The event log provides an audit history trail of past operation and changes. It contains a record for:
• All changes to Model 3711 parameters, with the the following exceptions:
- Methane adjustments may or may not be logged, depending on configuration (see
Section 6.4)
- Gas quality parameter changes may or may not be logged, depending on configuration
(see Section 6.4)
• Each power cycle
• Each warm or cold start
• Each device configuration upload or download
The event log can store up to 240 events in a "circular" log. When the log is full, each new event
overwrites the oldest event.
Each record includes:
• Point type
• Point number if applicable
• Parameter number
• Time and date stamp
• Operator ID
• Both the old and new parameter values
• Tag name of the associated point, or a 14-byte detail string in ASCII format
An FST can create an entry in the event log, but cannot read an event log entry.
The event log can be accessed by host programs. For information on accessing the event log from a
Modbus program, see Section 12.6.3.
Note: The event log is not saved in flash memory or saved with a device configuration file. The event
log must be saved or backed up separately (see Section 8.4.3).
162
Default value
3 3
lb/ft or kg/m , according to configured units
Deg F or Deg C, according to configured units
PSI or kPa
None, show process variables on communications
failure
3.2 seconds
®
Micro Motion Model 3711 Gas Flow Computers