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C-1

Scanner

2000 microEFM Appendix C

Appendix C—Scanner 2000 for Foundation™ Fieldbus

Overview

The NuFlo™ Scanner

2000 microEFM for Foundation™ Fieldbus communicates via both RTU Modbus

and H1 eldbus protocol. The device computes volumes of gas, liquid and steam using a differential pressure

or pulse output from a primary metering device and makes the data available for download via Modbus

communications. The device is CSA approved for Class I, Div. 1 installations.

When properly congured, the device converts values from predened Modbus

process variable registers to

Foundation™ eldbus signals for use in building eldbus control strategies. Additionally, other input values,

ow volumes, and calculations can be read by a eldbus host and recorded. For a complete list of parameters

supported by the device, see the Foundation™ Fieldbus Protocol Manual for Scanner 2000.

The Modbus

to Foundation

™

eldbus conversion is made possible by an integrated eldbus module. The

module is connected to the Scanner 2000 main circuitry by way of a second “interface” board which receives

the power/communications input from the eldbus network, and facilitates communications between the main

board and the eldbus module. The three boards, a switchplate with display, and a lithium battery pack are

housed inside a compact aluminum alloy enclosure.

A customer-supplied eldbus power supply is the primary power source. However, should the primary power

supply be lost, the lithium battery pack independently powers the unit to sustain data collection.

Static pressure and differential pressure inputs are supplied via an integral multi-variable transmitter. The

Scanner 2000 also supports inputs for process temperature (RTD) and turbine signals, a digital output, and an

optional external communications adapter. For a complete list of specications, see Table 1.1, page 14.

The Scanner 2000’s Modbus

parameters are congured using ModWorX Pro, a full-featured software

application supplied with every Scanner 2000 shipment, providing on-screen tools for conguring hardware

and ow calculations, calibrating inputs, and collecting and viewing ow history. Basic settings can also be

changed using the keypad on the front of the instrument. See Conguration via Keypad, page 70, for details.

Fieldbus communications are congured using a customer-supplied conguration tool. See Fieldbus

Conguration, page C-9, for instructions on conguring

Foundation™ eldbus parameters.

Note The Scanner 2000 for Foundation™ Fieldbus will be referred to as simply Scanner 2000 throughout

this appendix.

Cameron Scanner 2000 microEFM User Manual

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