User manual

31
© 2007, Elektro-Automatik GmbH & Co. KG
EN
About the interface cards
1. General
The interface cards IF-R1, IF-C1 and IF-U1 provide a digital
and IF-A1 an analogue connection to a control unit like a
PC or Siemens SPS. The devices, like for instance a power
supply, can be monitored, controlled and configured using
the cards and the proper software. In combination with an
IF-C1 card the user can realise a gateway from the RS232
or USB port of the PC to the CAN bus. Thus no extra hard-
ware is required to connect the PC to CAN. The gateway
allows to control up to 30 units in line by the RS232/USB
and CAN cards.
If a device has been equipped with an interface card, it is
automatically reognized and the corresponding setup menus
are available for configuration.
Those setup menus differ from model to model and are used
to set up parameters for the communication. The settings
are stored inside the unit.
The cards IF-R1 and IF-U1 additionally support the parallel
and/or series connection of multiple laboratory power sup-
plies of the series PSI 9000 (System Link Mode).
The analogue interface card IF-A1 is directly accessing the
power supply. This allows fast monitoring of actual values and
fast setting (with a very short delay) of set values, within the
nominal values of the device. The digital inputs and outputs
parameterisable.
1.1 Usage
The interface cards must only be equipped in units which
are designed for them.
A set of Labview VIs is included in the package, which will
simplify the use and implementation of the interface cards
in the LabView IDE.
The implementation in other applications and environments
is possible, but also very complex. The telegram structure is
explained in detail in on of the following sections.
The voltage range of the analogue input and output signals
of the IF-A1 is customisable between 0 and 10V. The digital
inputs can be switched between two different voltage ran-
ges for the logical level and the default logical level can be
predefined for the case these inputs are not used.
1.2 The concept
The interface cards are pluggable and can thus be used
where needed. They are compatible to various types of
devices, such as electronic loads. Due to the electrical iso-
lation of 2000V you can also connect multiple devices with
different potentials.
The digital cards IF-R1, IF-C1 and IF-U1 support a unique
communication protocol, which is object orientated. Every
type of device has an internal object list, which differs depen-
ding on the features of the device. The transmitted objects
are checked for validity and plausibility. Non-plausible or
erroneous values and objects result in an error which is sent
as an answer telegram.
1.3 Warranty/Repair
Attention: The interface must not be repaired by the user!
In case of warranty or a defect please contact your local
dealer to get informed about the next steps. The cards are
conceded with a statutory warranty of two years (for Germa-
ny), which is independent from the warranty (and its length)
of the device they are used in.
1.4 Used symbols
In the following description the display and operating
elements are marked differently by symbols.
 = Displayed only, all elements which are only
displayed and which represent a state are marked with
this symbol
= Parameter, changeable values, are marked with
this symbol and are emphasised
 = Menu items, selectable, lead to the next sublevel or
to the bottom level with parameters
Brackets {…} mark possible options or adjustment ranges
for parameters.
1.5 Scope of delivery
1 x Pluggable interface card
1 x Software CD with user instruction manuals
1 x Short installation guide
1 x Patch cable 0.5m 1:1 (only at IF-R1 and IF-U1)