Introduction To Devicenet; About This Manual; Assumptions; What You Should Already Know - Siemens SITRANS F M MAGFLO series Operating Manual

DeviceNet add-on module
1. Introduction to
DeviceNet

1.1 About this manual

1.2 Assumptions

1.3 What you should
already know
1.4 Product and
environment

1.5 Network

1.6 User profile

1.7 Interface to Device-
Net network
1.

Introduction to DeviceNet

This manual is intended to be used both as an instructional and a reference manual. It only
briefly touches on the basics of the DeviceNet protocol.
The manual is also intended to serve as a guideline when you specify and optimize your
communication system.
Even if you are an experienced DeviceNet programmer, we suggest that you read this manual
entirely before you start programming, since important information can be found in all chapters.
This manual assumes that you use a Siemens Flow Instruments MAG 6000 or MASS 6000 unit
with DeviceNet. It also assumes that you are using a PLC or PC, as a master, that is equipped
with a serial communication option supporting all the DeviceNet communication services
required by your application. Furthermore, it is assumed that all requirements stipulated in the
DeviceNet standard as well as those set up in the generic profile and those pertaining to the
MAG 6000 or MASS 6000 flowmeters are strickly observed as well as all limitations mentioned
fully respected.
The Siemens Flow Instruments DeviceNet module is designed to communicate with any master
abiding by the DeviceNet standard. It is therefore assumed that you have full knowledge of the
PC or PLC you intend to use as a master in your system. Any questions pertaining to hardware
or software produced by any other manufacturer is beyond the scope of this manual and is of no
concern to Siemens Flow Instruments.
If you have questions about how to set up master, master communication or communication to
a non Siemens Flow Instruments slave, the appropriate manuals should be consulted.
DeviceNet is a distributed control network. The DeviceNet protocol is embedded in the add-on
module (AOM) and is a communication protocol conforming to the Open DeviceNet Vendor
Association (ODVA) standard.
The add-on module allows DeviceNet compatible controllers, sensors and network management
tools to control, monitor and supervise the MAG 6000/MASS 6000 flowmeter. The add-on module
is designed to the DeviceNet system "Protocol for Vendors" as a slave device.
The MAG 6000/MASS 6000 flowmeter functions as a slave on the DeviceNet network. All
addressing and linking the nodes is done at installation time by a network manager tool. The
network installer and the network management master have significant influence on how the
nodes function on the network. A DeviceNet network can support up to 64 nodes.
The end-user is a network manager programmer or controller who sees the DeviceNet add-on
module as an invisble bridge to the flowmeter. Control and supervision of the flowmeter will be
possible through the standard parameter set.
The interface connection to the DeviceNet network is implemented through a microprocessor
with an imbedded CAN controller. For the MAG 6000, two different I/O assemblies are available
in the AOM. For the MASS 6000 seven different I/O assemblies are available in the AOM.
The I/O assembly can be controlled by the user. The I/O assembly can only handle polled mode.
For explicit messages the interface uses the pre-configured master functionality.
SFIDK.PS.023.C2.02
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