User manual

ManualsBrandsEA ELEKTRO-AUTOMATIK ManualsPower Supplies & Mains AdaptersEA-IF-A1 Analogue-Interface

LabView support

8. Utilities for the communication

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 6.1 or higher.

Following minimum system requirements have to be

considered:

- Pentium 3 CPU with 256 MB memory

- Windows operating system (Win98 and WinXP)

Updates of these VIs can be downloaded from our website

www.elektroautomatik.de, sofern verfügbar.

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

-> EA“.

Some VIs are only for devices of series PSI9000 and will only

work with these. They got the token 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 token EL in front of their names and in their icons.

Use and funktionality is described in the user instruction

manual for the VIs. You can access this in the usual way via

the LabView context help or directly from the CD in the folder

\software\labview\. Depecnding 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

2. Standard VIs

3. Special VIs

Important! Always use the proper VIs for your device.

PleasereadtheLabViewVIshelpleontheincluded

CD in order to get an overview and a clue about the

handling.

Broadcast:

After every broadcast request all bus sharing units can only

answer consecutively. Depending on the bys system, the

baud rate and the number of units, as well as the extra bus

traffic the answers can be delayed more or less. The time is

not specifiable and can only be estimated by the formula bus

sharing units * response time at singlecast. In most cases

the response time will be shorter.