Foundation Fieldbus Flashcards
What type of electrical signaling is used on Foundation Fieldbus H1?
Manchester Bi-phase L
What topology is used in Foundation Fieldbus?
Multi-drop bus
What 2 networks are defined by Foundation Fieldbus?
1) HSE: High Speed Ethernet that links workstations to controllers to field devices through FFLD, Foundation Fieldbus Linking Device
2) H1: Links field devices to each other and FFLDs
What hardware does Foundation Fieldbus need?
1) Power supply and conditioner
2) 2x100 Ohm resistors on each end of the trunk
3) Cable trunk
4) Cable spur
5) Junction block
6) FF linking device
What is a home run cable?
Another name for trunk cable
T/F With Foundation Fieldbus, you
do not need a DCS or PLC module to do loop control.
True
What is the biggest disadvantage of using Foundation Fieldbus?
Although it’s possible to use PID control in every H1 device, it makes the system more complex, more maintenance, and more knowledge heavy. This results in many installations not taking a full advantage of the FF system.
What is the purpose of a trunk cable?
The trunk cable is a Type A cable and is the main cable in a FF H1 segment used for data AND power.
What is a spur cable?
Type A or Type B cable that connects field devices to the H1 trunk cable
What is the range of power supply voltage that FF devices operate on?
9-32 Volts
What is the role of the power conditioner?
1) Filters the power supply with it’s own terminator to prevent H1 signal distortion
2) Connects DC power to the H1 line.
3) Connects FFLD to H1
What does the field junction block (wiring block, or Spur Block) do?
Provides spur and trunk connections
What is the role of the terminator?
Provides electrical termination at the end of H1 trunk line so that signal does not reflect
What network access methods does FF employ?
1) Master/slave
2) Token passing
What organization maintains FF?
fieldcom.org
What is the address range of FFLDs and controller modules on a FF device system?
0-16
What is the address range of commissioned field devices on a FF device system?
17-247
What is the address range of uncommissioned field devices on a FF device system?
248-251
What is the address range of temporary devices (devices that were just powered up and are not ready for use) on a FF device system?
252-255
What is the address range of handheld communicators on a FF device system?
242-255
What is the function of the Resource Block?
All FF devices have only 1 resource block that is responsible for storing hardware information about the FF device like the manufacturer, model, serial number, and device type
What is the function of the Transducer Block?
Every device will have a few TBs associated for each primary variable or compensating sensor. TBs are responsible for sensor linearization, temperature compensation, and I/O fault detection
What is the function of an Analog Input Block?
Take linearized, compensated data from a transducer block and convert it into a useable EU data based on the variable. Things like LRV, URV and alarms can be configured.
What is the function of an analog output block?
Receives EU data from a controller or a field device and converts it into a physical quantity
Delta V ________ is the primary navigation tool for system configuration, allowing users to define system components and view the overall structure.
Explore
Delta V __________ is the modern, built-for-purpose operations experience with HTML5 graphics support.
Operate
A DeltaV _____________is an
area of the program that is used to configure the logic that will be used to control the process
Control Studio
