Parameterisation And Operation Of The Valve Coupler; Introduction - Pepperl+Fuchs FD0-VC-Ex4.FF Manual

6

Parameterisation and operation of the valve coupler

6.1

Introduction

The valve function blockcoupler FD0-VC-Ex4.FF includes, as any other F
source block and several transducer blocks and function blocks. Figure 6.1 shows the blocks contained in
the valve coupler.
Transducer blocks
Figure 6.1: Block diagram of valve coupler
In addition to the "communication stack" which organises the data exchange between the fieldbus and the
application, and a resource block which describes the characteristics of the whole device, there are one DO
function block and a transducer block each per channel.
The four DO function blocks correspond to the specification of Fieldbus Foundation and can be used indi-
vidually to establish a F
sition and the current valve position is fed back. The reference value for the valve position is transferred to
one of the transducer blocks which then control the valve and read back the current position via the PFCs.
In addition, several diagnosis and monitoring functions for the valve can be activated in the transducer
blocks.
This chapter is focused on the commissioning of the transducer blocks and their interaction with the function
blocks and the resource block.
Representation and commissioning of the function blocks and resource block are specific to the control sys-
tem and documented there in detail. The annex includes a list and explanation of all parameters of the three
types of block.
Subject to reasonable modifications due to technical advances.
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
Parameterisation and operation of the valve coupler
Function blocks
I / O
fieldbus application. A reference value is specified here for the valve po-
OUNDATION
Fieldbus Valve Coupler FD0-VC-Ex4.FF
OUNDATION
Resource
block
Communication
stack
Physical
layer
FF-H1
Copyright Pepperl+Fuchs, Printed in Germany
fieldbus device, a re-
400
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