Analog Output - General Panel; Analog Output - Advanced Panel - Emerson Micro Motion 3711 Configuration And Use Manual

Configuring I/O
3. Work through the configuration panels in the following order:
• General
• Advanced
Note: To configure the analog output to report a process variable, you can use the AO Assignment
panel (see Section 6.5), or you can use an FST to write the EU value of the process variable to the
analog output (see Section 11.8.5). To use the analog output process control via a PID control loop,
see Chapter 10.
7.5.1 Analog Output – General panel
The Analog Output – General panel is shown in Figure 7-5. Parameters on this panel are listed and
defined in Table 7-4.
Table 7-4 Analog Outputs – General parameters
Parameter Description
Point Number Module slot number and channel number for this point.
Value • If Scanning is enabled, the Model 3711 will automatically
update the EU value on which the analog signal is based, and
this parameter is ignored.
• If Scanning is disabled, the value entered here will override
the EU value in calculating the analog signal.
Units Description for the engineering unit (EU) that this AO
represents; 10 characters maximum.
Low Reading EU The EU value corresponding to an output level of 0% (4 mA).
High Reading EU The EU value corresponding to an output level of 100%
(20 mA).
Active Alarms Displays any alarms that are currently active for this point.
Scanning • Enabled: The analog signal generated by this AO will be
recalculated automatically from the current EU value, at
one-second intervals.
• Disabled: The analog signal generated by this AO is
calculated from the configured Value. The actual EU value is
ignored.
Alarming • Enabled: Alarms are generated on point failure and written to
the alarm log.
• Disabled: A Point Fail alarm may appear in the Active Alarms
field, but will not be written to the alarm log.
7.5.2 Analog Output – Advanced panel
The Analog Output – Advanced panel is shown in Figure 7-6. Parameters on this panel are listed and
defined in Table 7-5.
68
Comments
Not configurable.
Examples: PSIG, MCF, Degrees F,
Milliamps, Volts
Used in conversion of the digital
EU value to an analog signal.
Used in conversion of the digital
EU value to an analog signal.
The field at the right of the Active
Alarm field displays the alarm bit
status value (0 to 255).
To conserve alarm log space,
enable alarms only when
necessary.
®
Micro Motion Model 3711 Gas Flow Computers