Bronkhorst DeviceNet slave interface Bedienungsanleitung PDF herunterladen (Seite 5)

BRONKHORST®

Page5DeviceNetinterface   9.17.026

1 GENERALPRODUCTINFORMATION

1.1 INTRODUCTION



The DeviceNet interface offers a direct connection to

DeviceNet Networks for Bronkhorst

 digital mass‐

flow/pressure meters/controllers according to the Mass

Flow Controller Profile specified by the ODVA. This

manual is limited to the description of the interface

between the DeviceNet Mass Flow Controller with a

masterdevice.



This manual will explain how to install a Bronkhorst instrument to your DeviceNet system. It

only consists of that

informationwhichisneededmost.



ThereisnomutualcommunicationbetweenDeviceNetslaves,onlybetweenmasterandslave.Eachslaveshouldhave

its own unique MAC ID on the network, otherwise there is no communication possible. Setting MAC ID can be

performedbyeither:

 Masterconfiguration

software

 Bronkhorsttoolingsoftware:FlowFix(onMultibusdocumentation/softwaretoolCD)

ThisprogrammeisabletocommunicatewiththeinstrumentviaRS232usingaspecial

cable.Ifyoudon’thavesuchacable,askyourlocalsalesrepresentative.

 Button(+LED's)ontopoftheinstrument

 Rotaryswitches

onthesideoftheinstrument(ifpresent).



Bronkhorst: ThisincludesBronkhorstHigh‐TechB.V.,BronkhorstCori‐TechB.V.and

M+WInstrumentsGmbH.



1.2 MULTIBUSTYPES



In2000Bronkhorstdevelopedtheirfirstdigitalinstrumentsaccordingtothe“multibus”principle.Thebasicpc‐board

on the instrument contained all of the general functions needed for measurement and control, including alarm,

totalizing and diagnostic functions.Ithad analog I/O‐signals andalso anRS232 connectionas astandard

feature. In

addition to this there is the possibility of integrating an interface board with DeviceNet™, Profibus‐DP

, Modbus ,

FLOW‐BUS or EtherCAT protocol. The first generation (MBC‐I) was based on a 16 bit Fujitsu controller. It was

supersededin 2003bythe Multibustype2(MBC‐II).Thisversionwasalsobasedon

the 16 bit Fujitsu controller but it had several improvements

 to the MBC‐I. One of

them is thecurrent steering of the valve. It reduced heatproduction and improved

control characteristics. The latest version Multibus controller type 3 (MBC3)  is

introducedin2011.Itisbuildarounda 72MHz32bitNXP ARM controller. IthasAD

and

DA controllers on board which makes it possible to measure noise free and

controlvalveswithoutdelays.Theinternalcontrolloopruns6timesfastercompared

totheMBC‐IIthereforecontrolstabilityhasimprovedsignificantly.Italsohasseveral

improved functions like reverse voltage protection, inrush current limitation and

overvoltage

protection.



MBC3instrumentscanberecognisedbythe“MBC3”placedonlowerleftside

oftheinstrumentlabel(seeexample).



InformationaboutDeviceNetcanbefoundatthewebsiteofdeODVA

organisation.www.odva.org

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