EA-IF-E2

Manufacturer Part NumberEA-IF-E2
DescriptionINTERFACE ETHERNET (EA-PSI/BCI800R)
ManufacturerEA ELEKTRO-AUTOMATIK
EA-IF-E2 datasheet
 


Specifications of EA-IF-E2

SvhcNo SVHC (18-Jun-2010)Accessory TypeInterface Card
ApplicationsEngineering Laboratory And Complex Industrial ApplicationApproval BodiesCE / EN
Rohs CompliantYesFor Use WithEA Elektro-Automatik PSU
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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LabView support
8. Communication with LabView
8.1 Overview about the Labview VIs
For an easy integration of multiple and even different devi-
ces into existing LabView applications we provide a set of
Labview VIs.
Those virtual instruments (VI) enable a simple implemen-
tation into and the programming of an application without
the need for the user to learn about the lower levels of
communication.
In order to use the functionality of these VIs it is required to
use and run the software development tool LabView from
the company National Instruments. The LabView VIs support
the use in version 7.0 or higher. VIs compatible to LabView
6.1 can be obtained by request.
Following minimum system requirements have to be
considered:
- Pentium 3 CPU with 56 MB memory
- Windows operating system (Win98 and WinXP)
Updates of these VIs can be downloaded from our website
www.elektroautomatik.de, if available.
8.1.1 Installation
To install and use the VIs in LabView in your environment,
please read the file „installation_english.pdf“ on the included
CD for instructions.
After the installation you can find the VIs in the context menu
of the LabView IDE in „Instrument I/O -> Instrument drivers
-> IF-XX“.
Some VIs are only for devices of series PSI9000 and will only
work with these. They got the abbreviation PSI9 in front of
their file name and also in their VI icons. Other VIs are only
for the electronic loads of the series EL3000 and EL9000.
These use the abbreviation EL in front of their names and
in their icons. Usage and functionality are described in the
user manual for the VIs. You can access it the usual way
via the LabView context help or directly from the CD in the
folder „\software\labview_7+\“. Depending on the Windows
version it can be necessary to copy the help file to a local
hard drive in order to read it correctly.
We distinguish three categories of VIs:
1. Communication VIs
. Standard VIs
3. Special VIs
Important! Always use the proper VIs for your device.
Please read the LabView VIs help file on the included
CD in order to get an overview and a clue about the
handling.
© 009, Elektro-Automatik GmbH & Co. KG
8.1.2 Short info Communication VIs
The communication VIs serve as a sort of drivers for the
various bus systems, respectively interface types. These VIs
are the basis of the standard VIs. Without the communicati-
on running in the background no device can be addressed.
Hence you must use the communication VIs and start them
before any standard VI is used. Every type of interface uses
its own VI. This is just an overview about the communication
VIs, detailed information about every VI can be found in the
user manual of the VI set.
- CAN.vi
Read/write communication objects with the CAN protocol
with card IF-C1. Will not run by default, because the user has
to insert the standard CAN VIs of his CAN hardware, which
are delivered by the manufacturer of the hardware.
- RS232.vi
Read/write communication objects over RS3 (serial COM
port) with card IF-R1.
- USB.vi
Read/write communication objects over USB with card IF-
U1.
- Communication_layer.vi
Core VI of the communication, uses one of the other three
VIs.
With the VIs „RS3“ and „USB“ you can control up to 9
further devices, if the device which is connected to the PC
is configured as gateway (only PSI 9000 series) to the CAN
bus (see „4.3 CAN card IF-C1“). The gateway feature is only
recommended for low bus traffic. The direct communication
with the CAN bus from a master device (PC) is much more
efficient and faster. But this requires an extra CAN master
card in the PC.
8.1.3 Usage
For the functionality of the single VIs please also read the
LabView help file which can be found in the subfolder \data
after you have installed the VIs, or on the included CD.
Important! Following applies:
- the communication VIs (CAN.vi, USB.vi, RS3.vi, only
one usable at once), as well as the communication_layer.
vi must be used
- the communication VIs must not be placed inside a se-
quence, case or loop
- in order to contact and control a device after the communica-
tion has started, it first requires to be initialised with psi9_init.
vi resp. el_init.vi; this should only be done one time
- all other VIs can be arbitrarily used at runtime (in a loop, for
example), because the communication manages the data
flow and returns error messages, in case of problems
- parallelly placed VIs which are used to query actual values
of several devices at once are still processed subsequently,
because the communication can only contact one device at
once, even at broadcast messages; this applies for USB and
RS3, since there is no broadcast at IEEE
EN
84