Sensor systems 2 AS-Interface

Issue date 2004-11-19 - Catalogue AS-Interface 2004/2005
2 Masters and Gateways
AS-Interface - Introduction
The AS-lnterface Masters / Gateways are the core components of an AS-
Interface system. These devices perform a cyclic interrogation of the slaves
via a polling procedure and represent the link to the higher level system in
the form of a decentrally operating, flexible and fast control unit. The devices
are also available with a control function (Integrated PLC with inputs, outputs,
timers, and counters) for autonomous operation.
Masters are available in various versions and construction types, for example
with a large graphics display for on-site diagnosis. These cover not only
peripheral faults, even statistical faults can be evaluated via an internal fault
counter and used for trouble-shooting if necessary.
Of course, all data can also be transferred via the field bus interface for control
purposes.
Addressing and parameter assignment (On initial installation, for example)
can take place directly on the master/gateway. There are also commissioning
tools available, for instance the AS-i Control Tools software, VAZ-SW-
ACT32. This software package allows simple, quick, and easy commissioning
of the AS-Interface network via the serial interface of a PC.
Various interfaces are available for connecting the higher level control system:
Serial interface (RS 232)
PCI bus for direct connection to a PC
Field bus interface with the gateways (For all current field bus systems,
e. g. PROFIBUS DP, DeviceNet, INTERBUS, etc.)
A gateway consists of two parts:
The AS-Interface master (e. g. to AS-Interface specification V2.1) for
management of the AS-Interface network.
The interface to the higher level field bus system (e. g. as PROFIBUS
slave) for transfer of the data to the control system.
For field applications Pepperl+Fuchs can supply masters/gateways in
protection class IP67 in the G4 housing. These devices are ideal for decentralisation
with AS-Interface, since the devices can be installed close to the
application. The restriction to 100 m of cable is of no great consequence
and the large distances can be bridged using the higher level field bus system.
The unified menu structure and philosophy of the masters/gateways simplifies
operation despite a large number of devices.
Master/Gateways designed to specification 2.1 have the type codes VBM...
oder VBG..., while devices designed to specification 2.0 have the codes
VAM... or VAG...
Devices with codes VBG-...-D oder VBG-...-DMD are equipped with a large
graphics display for extra ease of operation.
For your peace of mind:
This AS-Interface logo indicates that the AS-Interface devices are "Certificated"
products. It's there to reassure you that you will experience no negative
mutual interference effects from AS-Interface devices in your system.
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group Tel.: Germany +49 621 776-0 USA +1 330 4253555 Singapore +65 67799091 Internet http://www.pepperl-fuchs.com
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Masters and
Gateways
Power Supplies,
Extender, Repeaters
Safety at work
I/O Modules
Control cabinet
I/O Modules
Field application
Analogue modules
Other modules
Inductive sensors
Photoelectric
sensors
Rotary encoders
Accessories