Rockwell Automation 1788-FFCT NI-FBUS Configurator User Manual - Manual (Page 19)

Publication 1788-UM052B-EN-P - April 2002
Configuring a Fieldbus System 2-3
6. Configure alarms.
Using the NI-FBUS Configurator, you can configure fieldbus
devices to generate alarms. Thus, you do not need an HMI to
generate alarms. To configure alarms, identify the function
blocks that generate alarms and the hosts that receive the
alarms. You must also configure the alarm limits and priorities.
For instructions on how to configure alarms, refer to the
Configuring Alarms section on page 4-25.
7. Configure trends.
Fieldbus devices collect trend samples (value, status, and time
stamps) and broadcast them on the bus periodically. To
configure trends, identify the function block (or transducer
block) parameters that you want to trend, and configure the
sampling rates and types for each of them. You must also
identify which host or hosts receive the trend.
For instructions on how to configure trends, refer to the
Configuring Trends section on page 4-26.
8. Set static parameters.
For your control strategy to work, you must configure static
parameters, such as scaling parameters like XD_SCALE in AI/AO
blocks and PV_SCALE in PID blocks. For PID control, you must
also configure engineering units, control and I/O options, fault
state values for output blocks, and tuning parameters.
For instructions on how to set parameters, refer to the Viewing
and Editing Function Block Parameters section on page 4-19.
9. Configure input/output (I/O).
Sensor and actuator I/O is typically modeled as a transducer
block. Refer to your sensor or actuator documentation to
determine whether you can configure I/O.
For instructions on how to configure I/O, refer to the Viewing
and Editing Function Block Parameters section on page 4-19.