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Related Manuals for Sierra Foundation Fieldbus 600 Series
Summary of Contents for Sierra Foundation Fieldbus 600 Series
- Page 1 600/700 Series Foundation Fieldbus Instruction Manual Foundation Fieldbus Interface Specification for Models: 640S, 760S, 780S, and 780S UHP Thermal Mass Flow Meters Part Number: IM600/700-FF, Rev. V1.1 December 2013...
- Page 2 IMPORTANT CUSTOMER NOTICE- OXYGEN SERVICE Sierra Instruments, Inc. is not liable for any damage or personal injury, whatsoever, resulting from the use of Sierra Instruments standard mass flow meters for oxygen gas. You are responsible for determining if this mass flow meter is appropriate for your oxygen application. You are responsible for cleaning the mass flow meter to the degree required for your oxygen flow application.
- Page 3 Warnings and Cautions Warning! Agency approval for hazardous location installations varies between flow meter models. Consult the flow meter nameplate for specific flow meter approvals before any hazardous location installation. Warning! Hot tapping must be performed by a trained professional. U.S. regulations often require a hot tap permit. The manufacturer of the hot tap equipment and/or the contractor performing the hot tap is responsible for providing proof of such a permit.
- Page 4 Receipt of System Components When receiving a Sierra mass flow meter, carefully check the outside packing carton for damage incurred in shipment. If the carton is damaged, notify the local carrier and submit a report to the factory or distributor. Remove the packing slip and check that all ordered components are present.
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Page 5: Table Of Contents
configuration) Table of Contents Table of Contents ............................ 5 Chapter 1: Introduction .......................... 6 Chapter 2 – Connecting the 600/700 Series to Your FF-BUS Network ..........7 Chapter 3 - Definitions ..........................8 Chapter 4 – Foundation Fieldbus Interface Configurations ..............9 AI/AO Blocks: ............................ -
Page 6: Chapter 1: Introduction
Chapter 1: Introduction This manual will explain how to add a Sierra flow meter equipped with Foundation Fieldbus to your network. The Foundation Fieldbus interface allows access to all relevant data available in the flow meter. This manual is intended to document the configuration of the Sierra Instruments’ 600/700 Series thermal flow meters with the Foundation Fieldbus Communication Interface to your network. -
Page 7: Chapter 2 - Connecting The 600/700 Series To Your Ff-Bus Network
Chapter 2 – Connecting the 600/700 Series to Your FF-BUS Network The 600/700 Series meter uses 18-30 VDC at 625 mA. Due to the current needed, the meter cannot be powered off the H1 network. The 24 VDC power is connected to terminals 1 and 2. The Foundation Fieldbus H1 network connections are labeled as FF-1 and FF-2. -
Page 8: Chapter 3 - Definitions
AO. Modbus: Modbus is another digital communication protocol and is only relevant here because the Sierra FF-BUS interface uses Modbus as an intermediary between the meter and the FF-BUS interface. For special configuration, the user will only need a rudimentary knowledge of Modbus. -
Page 9: Chapter 4 - Foundation Fieldbus Interface Configurations
Chapter 4 – Foundation Fieldbus Interface Configurations Both 640S and 780S FF-BUS interfaces uses a Modbus to FF-BUS translator board inside the flowmeter. This allows the user to configure variables accessible to our Modbus interface. For the most part, the Modbus to FF-BUS translation is invisible to the end user unless they want to reconfigure the Transducer Block (TB) to access other Modbus variables. - Page 10 Serial number – char 1,2 Serial number – char 3,4 Serial number – char 5,6 Serial number – char 7,8 Serial number – char 9,10 Decimal Point Table 2: Factory Static MODBUS Registers...
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Page 11: Chapter 5 - Configuring The Ff-Bus Using Ni-Fbus Configurator
Chapter 5 – Configuring the FF-BUS Using NI-FBUS Configurator The National Instruments F-BUS Configurator software is widely used for testing and configuration of FF-BUS devices. Consult your NI-FBUS Configurator manual for more information on this NI software (included in NI-FBUS help on the software). Before starting the NI-FBUS Configurator, you must import the DD using the NI- FBUS Interface Configurator Utility. -
Page 12: Configuration
Configuration Most of the configuration will be in the Transducer Block (SIERRA_TB) under the “Others” tab (see the screen shots below). In order to write any changes, the Block Mode must be set to OOS (out of service). Make your changes and click “Write Changes.” Once the yellow highlights disappear, click Auto mode. - Page 13 Current Flow Rate Accumulated Total Flow Figure 4: Screen Showing PV1 and PV2 Values From Meter User Full Scale Factory Full Scale K-Factor Figure 5: Screen Showing Modbus Static Values From Meter You may also set the engineering units used by your meter in the NI-FBUS Configurator so they can be read by the FF-BUS under PV_UNIT_1,2,3,4 and FINAL_VALUE_AO_UNIT.
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Page 14: Modbus_Com_Setup
Figure 6: TB Block Engineering Unit Setup MODBUS_COM_SETUP The Modbus com settings are needed for the communication connection between the Modbus and the FF-BUS boards inside the meter. The Modbus Instrument Address must always be set to 1. The MODBUS _COM_SETUP must always set as shown below: BaudRate: 9600 Baud Stop_Bits: 1 Parity: None... -
Page 15: Chapter 6 - Available Modbus Registers
Chapter 6 – Available Modbus Registers Although most users will be satisfied using the default configuration, other Modbus registers can be configured for Foundation Fieldbus access. Below (Table 3) is a list of all available Modbus registers. These would need to be configured in the transducer block. Register Description Read... -
Page 16: Chapter 7 - Modbus Register Explained
Chapter 7 – Modbus Register Explained Each 16 bit register holds a specific type of data. Sometimes more registers are required to obtain the desired information. 0-1 : Actual Flow The actual flow as displayed on the LCD of the meter (if available). The flow is in a Float format, Byte order 1-0-3-2 (IEEE-754 encoded). - Page 17 13-14 : Totalizer Unit Each 16 bit register contains two 8 bit ASCII characters of the flow unit. The returned word is encoded in ASCII. You could read this value by using 3 of the 40 Modbus registers. However we recommend just using the FF-BUS PV_UNITS instead. 15-20 : Serial Number Each 16 bit register contains two 8 bit ASCII characters of the serial number.
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Page 18: Chapter 8 - Communication Diagnostic Leds
Chapter 8 – Communication Diagnostic LEDS When powered, one of the Meter to Modbus LEDs will be flashing Green indicating that the meter is communicating with the Modbus board. The other LED will blink Red each time the Foundation Fieldbus Board polls the Modbus board. Every time a message is passed between the Foundation Fieldbus board and the Modbus board the FF_BUS to MODBUS_COM LED will blink yellow.
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