Festo CPX-CMPX User Manual
CPX terminal
Description
Electronics
System manual
Installing and
commissioning CPX
terminals
Description
526 446
en 0902e
[742939]
Contents and general safety instructions
Original en. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Edition en 0902e. . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
Designation P.BE−CPX−SYS−EN. . . . . . . . . . . . . . . . . . . . . . . .
Orderno. 526 446
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E (Festo AG&Co. KG, D73726 Esslingen, Germany, 2009)
Internet:http://www.festo.com
E−mail: service_international@festo.com
The copying, distribution and utilisation of this document
as well
as the communication of its contents to others
without expressed authorization is prohibited. Offenders
will be held liable for compensation of damages. All rights
are reserved, in particular the right to carry out patent,
registered design or ornamental design registration.
Festo P.BE−CPX−SYS−EN en 0902e
I
Contents and general safety instructions
HARAX®, INTEL®, Interbus®, Modbus®, MOTOROLA®,
PROFIBUS
®
, Push−Pull®, TÜV® and VDE® are registered
trademarks of the respective trademark owners in certain
countries.
II
Festo P.BE−CPX−SYS−E N en 0902e
Contents and general safety instructions
Contents
Intended use VII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Range of application and certification VIII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Target group IX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service IX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Important user instructions X . . . . . . . . . . . . . . . . . . . . . .
Notes on the use of this manual XII . . . . . . . . . . . . . . . . . . . .
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1. Overview of components 1−1 . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Structure of the CPX terminal 1−3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1.1 Mode of operation of the CPX terminal 1−7 . . . . . . . . . . . . . . . . . . . . . .
1.1.2 Structure of the electric CPX modules 1−17 . . . . . . . .
1.1.3 The power supply concept of the CPX terminal 1−19 . . . . . . . . . . . . . . . .
1.2 Commissioning, diagnosis and operational functions 1−24 . . . . . . .
2. Assembly 2−1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 General instructions on assembly and dismantling 2−3 . . . . . . . . . . . . . . . . . . . .
2.2 Assembling electric modules with plastic interlinking blocks 2−6 . . .
2.2.1 Replacing a complete module or interlinking block with tie rod
interlinking 2−7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.2 Increasing or reducing the number of electric modules 2−10 . . . . . . . . .
2.2.3 Fitting the right−hand end plates with Midi/Maxi valves 2−15 . . . . . . . . .
2.3 Assembling electric
2.3.1 Replacing a complete module or interlinking block 2−18 . . . . . . . . . . . .
2.4 Fitting the CPX terminal 2−21 . . . . . . . . . .
2.4.1 Fitting CPX terminals without pneumatics onto a H−rail 2−21 . . . . . . . . .
2.4.2 Fitting
2.4.3 Fitting CPX terminals with Midi/Maxi pneumatics onto an H−rail 2−26 . .
2.4.4 Wall mounting 2−29 . . . . . . . . . . . . . . . . . . . .
modules with metal interlinking blocks 2−17 . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CPX terminals with pneumatics onto an H−rail 2−22 . . . . . . . . . . .
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3. Installation 3−1 . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 General installation instructions 3−3 . . . . . . . . . . . . . . . . . . . . . . . .
3.1.1 Connecting cable 3−3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Festo P.BE−CPX−SYS−EN en 0902e
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III
Contents and general safety instructions
3.1.2 Configuration of the CPX bus node 3−6 . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.3 Configuration of the pneumatics 3−7 . . . . . . . . . . . . . . . .
3.1.4 Selecting the power supply unit 3−8 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.5 Power supply of the CPX terminal 3−12
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4. Commissioning 4−1 . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Procedure for commissioning 4−3 . . . . . . . . . . . . . . . . . . . . . . .
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4.2 Preparing the CPX terminal for commissioning 4−4 . . . . . . . . . . . . . . . . . . . . . . .
4.2.1 Parameter types 4−6 . . . . . .
4.2.2 Possibilities of parametrisation 4−9 . . . . . . . . . . . . .
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4.3 Start−up behaviour of the CPX terminal 4−10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5. Diagnostics
5.1 General notes on diagnosis 5−3 . . . . . . . .
5.1.1 On the spot diagnosis with LEDs 5−5 . . . . . . . . . . . . . .
5.1.2 CPX−specific LEDs 5−6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
and error handling 5−1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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5.2 Diagnosis via status bits or the I/O diagnostic interface 5−11 . . . . . . . . . . . . . . . .
5.2.1 Structure of the status bits 5−12 . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .
5.2.2 The I/O diagnostic interface 5−14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2.3 Error numbers 5−19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A. Technical appendix A−1 . . . . .
A.1 Technical data A−3 . . . . . . . .
A.2 Cable length and cross−sectional area A−7 . . . .
B. Parameters and data of the CPX terminal B−1 . . . . . . . . . . . . . . . . .
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B.1 Access to internal parameters and data B−3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B.2 Description of the parameters and data B−4
B.2.1 Overview of the function numbers B−5 . . . . . . . . . . . . . . . .
. . . . . . . . . .
B.2.2 System parameters B−8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B.2.3 Module
B.2.4 Diagnostic memory parameters B−23 . . . . . . . .
B.2.5 Diagnostic memory data B−29 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IV
parameters B−15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Festo P.BE−CPX−SYS−E N en 0902e
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Contents and general safety instructions
B.2.6 System diagnostic data B−32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B.2.7 Module diagnostic data B−34 . . . . . . . . . .
B.2.8 System data B−36 . . . . . . . . . . . . . . . . . . . . . . . .
B.2.9 Module data B−42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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C. General information on parametrisation C−1 . . . . . . . . . . . . . . . . . . . . . . . . . . .
C.1 Input debounce time C−3 .
C.2 Signal extension C−5 . . . . . .
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C.3 Influence of signal states C−8 . . . .
C.3.1 Force C−11 . . . . . . . . . . . . .
C.3.2 Signal status in the event of a fault (Fail safe) C−15 . . .
C.3.3 Signal status in Idle status (Idle mode) C−18 . . . . . . . . . . . . . . . . . . . . . .
C.4 Diagnostic memory C−20 . . . . . .
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C.5 Monitoring errors C−23 . . . . . . . . .
D. Index D−1 . . . . . . . . . . . .
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Festo P.BE−CPX−SYS−EN en 0902e
V
Contents and general safety instructions
VI
Festo P.BE−CPX−SYS−E N en 0902e
Contents and general safety instructions
Intended use
CPX terminals are intended for installation in machines or
automation systems. Depending on the CPX bus node used,
they can be connected to a special field bus system and serve
to interrogate sensor signals and to control pneumatic and
electric actuators.
The individual CPX modules of the CPX terminal are docu
mented in specific
the manuals must always be observed and the relevant CPX
module must only be used as intended. CPX modules and
cables are only to be used as follows:
Only in an industrial environment
As intended
In original status without unauthorised modifications.
Only the conversions or modifications described in
documentation supplied with the product are permitted.
manuals. The safety instructions listed in
the
Festo P.BE−CPX−SYS−EN en 0902e
In perfect technical condition.
When used together with commercially available compo
nents, such as sensors and actuators, the specified limits for
pressures, temperatures, electrical data, torques etc. must be
observed. Also observe the standards specified in the rele
vant chapters, as well as national and local
laws and technical
regulations.
VII
Contents and general safety instructions
Range of application and certification
The product fulfils the requirements of the EU directives and
is marked with the CE marking symbol.
Standards and test values, which the product must comply
with and fulfil, can be found in the section Technical data".
The product−relevant EU directive can be found in the decla
ration of conformance.
Certain configurations of the product have been certified by
Underwriters Laboratories Inc. (UL) for the USA and Canada.
These configurations are
marked as follows:
VIII
ULRecognized Component Mark for Canada and the United
States
Note
Observe the following if the UL requirements are to be
complied with in your application:
Rules for observing the UL certification can be found in
the separate UL−specific documentation. The relevant
technical specifications listed there also apply here.
The technical specifications in this documentation may
show different values.
Festo P.BE−CPX−SYS−E N en 0902e
Contents and general safety instructions
Target group
This manual is directed exclusively at technicians trained in
control and automation technology.
Service
Please consult your local Festo repair service if you have any
technical problems.
Festo P.BE−CPX−SYS−EN en 0902e
IX
Contents and general safety instructions
Important user instructions
Danger categories
This manual contains instructions on the possible dangers
which can occur if the product is not used correctly. These
instructions are marked (Warning, Caution, etc), printed on
ashaded background and marked additionally with a picto
gram. A distinction is made between the following danger
warnings:
Warning
... means that failure to observe this instruction may result
in serious personal injury or material damage.
Caution
... means that failure to observe this instruction may result
in personal injury or material damage.
Note
... means that failure to observe this instruction may result
in material damage.
The following pictogram marks passages in the text which
describe activities with electrostatically sensitive devices:
Electrostatically sensitive devices: inappropriate handling can
result in damage to components.
X
Festo P.BE−CPX−SYS−E N en 0902e
Contents and general safety instructions
Identification of specific information
The following pictograms designate texts that contain special
information.
Pictograms
Information:
Recommendations, tips and references to other sources of
information
Accessories:
Information about necessary or useful accessories for the
Festo product.
Environment:
Information on the environmentally friendly use of
Festo products.
Festo P.BE−CPX−SYS−EN en 0902e
Text designations
· Bullet points indicate activities that may be carried out in
any order.
1. Numerals denote activities which must be carried out in
the numerical order specified.
Arrowheads indicate general lists.
XI
Contents and general safety instructions
Notes on the use of this manual
This manual contains general basic information on the me
thod of operation, on fitting, installing and commissioning
CPX terminals.
Special information on commissioning, parameterising and
diagnosing a CPX terminal with the CPX bus node you are
using can be found in the appropriate manual for the CPX bus
node.
Information about further CPX modules
can be found in the
manual for the relevant module. An overview is provided in
Table0/1.
Conventions
The parameters and data of the CPX terminal are described in
Appendix B.2. These appear in English on the handheld type
CPX−MMI−1.
XII
Festo P.BE−CPX−SYS−E N en 0902e
Contents and general safety instructions
Type Title Description
Description
Electronics
Manual
Electronics
Software
package
System description"
Type P.BE−CPX−SYS−...
CPX bus node"
Type P.BE−CPX−FB...
CPX I/O modules"
Type P.BE−CPX−EA−...
CPX analogue I/O mo
dules"
Type P.BE−CPX−AX−...
"CPX−CP interface"
Type P.BE−CPX−CP−..
Handheld"
Type P.BE−CPX−MMI−1−..
MPA electronics modu
les"
Type P.BE−MPA−
ELEKTRONIK−...
CPX−FEC"
Type P.BE−CPX−FEC−...
FST" Programming in statement list and ladder
Overview of structure, components and mode
of operation of CPX terminals;
installation and commissioning instructions as
well as basic principles of parametrisation
Instructions on assembly, installation, commis
sioning and diagnostics of the relevant bus
nodes
Notes on connections and instructions on fit
ting, installing and commissioning input and
output modules of type CPX−.... and the MPA,
CPA and Midi/Maxi pneumatic interfaces
Notes about connection types and instructions
for fitting, installing and commissioning CPX
analogue I/O modules
Instructions on fitting, installing, commissio
ning and diagnosing CP systems with the
CP interface type CPX−CP−4−FB
Instructions for commissioning and diagnosing
CPX terminals with the handheld typeCPX−
MMI−1
Instructions on assembly, installation, commis
sioning and diagnostics of the MPA pneumatic
and electronic modules.
Instructions for fitting, installing,
commissioning and diagnosing the
CPX Front End Controller.
diagram for the FEC
Table0/1: Descriptions for the CPX terminal part 1
Festo P.BE−CPX−SYS−EN en 0902e
XIII
Contents and general safety instructions
Type Title Description
Description
Pneumatics
Valve terminals with
MPA pneumatics"
Type P.BE−MPA−...
Valve terminals with
CPA pneumatics"
Type P.BE−CPA−...
Valve terminals with
Midi/Maxi pneumatics"
Type P.BE−Midi/
Maxi−03−...
Instructions for fitting, installing, commissio
ning, maintaining and converting the MPA
pneumatics
Instructions for fitting, installing, commissio
ning, maintaining and converting the CPA
pneumatics (type 12)
Instructions for fitting, installing, commissio
ning, maintaining and converting the Midi/
Maxi pneumatics (type 03)
Table0/2: Descriptions for the CPX terminal part 2
XIV
Festo P.BE−CPX−SYS−E N en 0902e
Contents and general safety instructions
Term/abbreviation Meaning
Connection block Exchangeable housing upper part of modules with connection technology.
CP Compact Performance
CPX bus node Provides the connection to specific fieldbuses. Transmits control signals
CPX terminal Modular, electric terminal type 50
CPX modules Collective term for the various modules which can be integrated in a CPX
DIL switch Dual−in−line switches consist of several logic elements with which settings
Fieldbus Data bus via which the CPX modules communicate with each other and
Function modules Function modules are also known as technology modules (e.g. CPX−CP
Input module CPX input module
Interlinking block Lower part of the housing of a module or block for interlinking the module
I Digital input
I/O diagnostic interface The I/O diagnostic interface is a bus−independent diagnostic interface at
I/O modules Common term for the CPX modules which provide digital inputs and out
I/Os Digital inputs and outputs
NBR Nitrile butadiene rubber, material for seals
to the connected modules and monitors their ability to function.
terminal.
can be made.
are supplied with the necessary operating voltage.
interface)
electrically with the terminal
I/O level, permitting access to internal data of the CPX terminal.
puts (CPX input modules and CPX output modules).
O Digital output
Output module CPX output module
PLC/IPC Programmable logic controller/industrial PC
Pneumatic interface The pneumatic interface is the interface between the modular electrical
peripherals and the pneumatics.
Festo P.BE−CPX−SYS−EN en 0902e
XV
Contents and general safety instructions
Term/abbreviation Meaning
Status bits Internal inputs that supply coded common diagnostic messages
Technology modules Function modules are also known as technology modules (e.g. CPX−CP
interface)
Table0/3: Product−specific terms and abbreviations
XVI
Festo P.BE−CPX−SYS−E N en 0902e
Overview of components
Chapter 1
1−1Festo P.BE−CPX−SYS−EN en 0902e
1. Overview of components
Contents
1. Overview of components 1−1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Structure of the CPX terminal 1−3 . . .
1.1.1 Mode of operation of the CPX terminal 1−7 . . . . . . . . .
1.1.2 Structure of the electric CPX modules 1−17 . . . . . . . . . . . . . . . . . . . . . . .
1.1.3 The power supply concept of the CPX terminal 1−19 .
1.2 Commissioning, diagnosis and operational functions 1−24 . . . . . . . . . . . . . . . . . .
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1−2
Festo P.BE−CPX−SYS−E N en 0902e
1. Overview of components
1.1 Structure of the CPX terminal
CPX terminals consist of electric and pneumatic modules for
controlling pneumatic actuators and low−current consuming
electric devices (further valves, bulbs, etc.). They are usually
placed decentrally directly on the machine or system.
Design variants CPX terminals are available in plastic version (type CPX−...)
and in metal version (type CPX−M−...) with various different
functions. They can
matic modules (valves) in accordance with the customer’s
wishes. The equipment fitted on the CPX terminal in this man
ual may therefore differ from the equipment you are using.
be fitted with different electric and pneu
1 Electric modules (electric side) 2 Pneumatic modules (pneumatic side);
optional
Fig.1/1: Structure of a CPX terminal with CPA pneumatics (example in plastic version)
Festo P.BE−CPX−SYS−EN en 0902e
2
1
1−3
1. Overview of components
Fieldbus connection CPX terminals with fieldbus connection permit communica
tion with remotely−situated higher−order control systems.
CPX terminals are constructed on a modular basis and can
consist of the following modules, for example:
Modules
Brief description
CPX bus node for connecting to
higher−order control systems via the
fieldbus;
Connections depend on the design of
the CPX bus node
CPX Front End Controller for control
ling pneumatic and electric actua
tors; communication via Ethernet
(web server, e−mail, Modbus TCP ,
EasyIP etc.)
CPX I/O modules for evaluating pro
cess signals;
Selectable connection technology
(M12 connections here)
CPX−CP interface for connecting de
centrally arranged CP I/O modules
and CP valve terminals (technology
module)
1−4
Tab.1/1: Electrical modules of a CPX terminal (examples in
plastic version)
Festo P.BE−CPX−SYS−E N en 0902e
1. Overview of components
Modules Brief description
Pneumatic interface for connecting
the modular electrical peripherals of
type50 (CPX) to valve terminals of
type32 (MPA)
Pneumatic interface for connecting
the modular electrical peripherals of
type50 (CPX) to VTSA/ISO valves
(type44)
Pneumatic interface for connecting
the modular electrical periphery
type50 (CPX) to valve terminals of
type03 (Midi/Maxi).
Festo P.BE−CPX−SYS−EN en 0902e
Pneumatic interface for connecting
the modular electrical peripherals of
type50 (CPX) to valve terminals of
type12 (CPA)
Tab.1/2: Pneumatic interface modules for CPX terminals
1−5
1. Overview of components
Modules Brief description
MPA
VTSA
Midi/Maxi
1−6
CPA
Tab.1/3: Valve terminal pneumatics for CPX terminals
The electric and pneumatic side of the CPX terminal can be
adapted to various requirements. The electric side can be
fitted with various electric CPX modules, e.g.a CPX bus node,
digital and analogue CPX I/O modules etc. (see Tab.1/1).
Festo P.BE−CPX−SYS−E N en 0902e
1. Overview of components
3
4
The pneumatic side can be fitted with pneumatics of type
MPA, VTSA, Midi/Maxi or CPA (see Tab.1/3). Different sizes
of valves are possible here. Pneumatic modules are not abso
lutely necessary. CPX terminals can consist exclusively of
electric modules. If pneumatic modules are to be used, the
pneumatic interface appropriate to the pneumatics
tion is required (see Tab.1/2).
1.1.1 Mode of operation of the CPX terminal
1
Fieldbus
incoming
12
2 Fieldbus
continuing
3 Compressed air
supply
in ques
4 Supply air (2/4)
5 CPX bus node
5
Fig.1/2: Function overview of CPX terminal (here with MPA pneumatics)
Festo P.BE−CPX−SYS−EN en 0902e
1−7
1. Overview of components
CPX bus node
The node point of a CPX terminal with fieldbus connection is
the CPX bus node, which controls the following functions:
The connection of the terminal to the relevant field bus
The control of data transfer to/from the field bus module
of your control system
Read and write access (depending on the CPX bus
to system−relevant parameters and diagnostic data
(access to internal data and parameters)
Internal control of the terminal
CPX bus nodes provide the connection to certain fieldbuses,
pass control signals on to the other CPX modules and monitor
their ability to function. Basic settings for fieldbus communi
cation can usually be made by DIL
bus node.
Detailed information on the CPX bus node you are using can be
found in the manual for the relevant CPX bus node.
switch directly on the CPX
node)
CPX Front End Controller (CPX−FEC)
The CPX Front End Controller can be used together with a CPX
bus node or independently of a CPX bus node. It offers the
following functions, for example:
Independent control of the CPX valve terminal (Stand
Alone)
Communication via Ethernet (e.g. web server, e−mail,
EasyIP)
1−8
Ethernet slave function (via Modbus TCP)
Communication via fieldbus (only
appropriate CPX bus node)
in conjunction with the
Festo P.BE−CPX−SYS−E N en 0902e
1. Overview of components
CPX I/O modules
Processing signals can be evaluated with the CPX I/O mod
ules. Input modules provide inputs for connecting sensors
and enable cylinder positions to be scanned, for example.
Output modules provide universally usable electric outputs
for controlling low−current consuming devices (further valves,
bulbs, etc.).
Note
Including the CPX bus node, a maximum of10 electric CPX
modules plus a pneumatic interface are permitted on the
electric side.
The CPX I/O modules have various types of connections. The
connections are on a sub−base which can be removed from
the module. This offers the following advantages:
Festo P.BE−CPX−SYS−EN en 0902e
The CPX terminal can be
fitted with the desired con
nections. It can be adapted easily to various applica
tions and operating conditions.
When servicing is required, the electronics of the I/O
modules can be replaced without the need to dis
mantle the CPX terminal, or to loosen individual con
nections on the I/O modules.
The following types of
connection can be used:
M12 connection, 5− or 8−pin
M8 connection, 3− or 4−pin
Terminal strips, 16−pin
Sub−D connection, 25−pin
HARAX connection, 4−pin
Further information on the CPX I/O modules can be found in the
manual CPX I/O modules", type P. BE−CPX−EA−...
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1. Overview of components
CPX−CP interface
The CPX−CP interface serves for connecting decentrally ar
ranged CP modules (CP valve terminals and CP I/O modules).
It transmits control signals to the connected CP modules and
monitors their ability to function. Maximum 128 external I/Os
are possible per CPX−CP interface.
Detailed information on the CPX−CP interface can be found in
the manual
for the CPX−CP interface type P. BE−CPX−CP−...
Pneumatic interface
If the CPX terminal is to be fitted with valves, a pneumatic
interface will be required (see Tab.1/2). The pneumatic inter
face is the interface between the electric and pneumatic pe
ripherals. It forms the mechanical connection between the
pneumatic and electric modules and transmits the electric
signals.
1−10
The CPX pneumatic interface is mounted
side of the last electric module. Pneumatic interfaces can be
used for e.g.:
Pneumatics of type MPA (maximum 128solenoid coils)
Pneumatics of type VTSA (maximum 32solenoid coils)
Pneumatics of type Midi/Maxi (maximum 26solenoid
coils)
Pneumatics of type CPA (maximum 22solenoid coils)
on the right−hand
Festo P.BE−CPX−SYS−E N en 0902e
1. Overview of components
Pneumatic interface for
MPA pneumatics
Pneumatic interfaces for
VTSA pneumatics,
Midi/Maxi pneumatics
or CPA pneumatics
The pneumatic interface for MPA pneumatics provides the
mechanical and electrical connection to the MPA pneumatic
modules. Therefore, from the point of view of the CPX termi
nal, the MPA pneumatic interface does not count as an elec
tric module. Instead, the individual MPA pneumatic modules
each represent an
electric module with digital outputs for
triggering the integrated valves.
From a technical point of view, the pneumatic interfaces
for VTSA pneumatics, Midi/Maxi pneumatics or CPA pneu
matics represent electrical modules with a variable (configu
rable) number of digital outputs for activating the integrated
valves.
Detailed information on the CPX pneumatic interfaces and
MPA pneumatic modules can be found in the manual for the
CPX I/O modules of type P. BE−CPX−EA−...
Valve terminal pneumatics
The valve terminal pneumatics provide the following:
Common channels for supply and exhaust air
Electric signals for all valve solenoid coils
Festo P.BE−CPX−SYS−EN en 0902e
Working lines 2 and 4 are provided for each valve position on
the individual pneumatic modules. The valves are supplied
with compressed air via the common channels or via special
supply modules. Both
the air and auxiliary pilot air from the
valves are also exhausted via these common channels.
Further modules for pressure supply are also available,
e.g. in order to permit work to be carried out with different
work pressures.
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1. Overview of components
CPX terminals without pneumatics
CPX terminals without pneumatic modules possess an end
plate instead of the pneumatic interface. This design provides
digital and analogue inputs and outputs on the relevant
fieldbus. A maximum of 10 electric modules (including the
CPX bus node) are permitted on a CPX terminal.
1 CPX bus node
1 2
2 I/O modules
3 Right end plate
4 Left end plate
4
Fig.1/3: CPX terminal as fieldbus I/O slave
X 1
X 3
X 1
X 3
X 1
X 2
X 4
X 2
X 4
X 3
X 2
X 4
3
1−12
Festo P.BE−CPX−SYS−E N en 0902e
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