New free version of LabVIEW-EPICS-interface CA Lab 1.6.0.9 for Linux and Windows

 Uncategorized  No Responses »
Mar 222018
 

From: Carsten Winkler

We are happy to bring you the improved version of our
LabVIEW-EPICS-interface CA Lab 1.6.0.9 for Linux and Windows!

We optimized memory management,
improved read/write access for big data arrays,
added preinitialization (optional)
and disconnect (optional) of CaLab-objects.

The new version and documentation can be downloaded at
http://hz-b.de/calab

Change-log of CA Lab
======================================================================
V1.6.0.9 (Released: March 2018)
# fixed multithreaded write values
# fixed default input type for name in “CaLabPut.vi”
# corrected “Event Demo.vi”
———————————————————————-
V1.6.0.8 (Pre-Release: March 2018)
+ “CaLabDisconnect.vi”: Now you can disconnect several or all
EPICS variables from network without closing all CaLab-VIs
THIS IS OPTIONAL
+ “CaLabInit.vi”: Now you can initialize Channel Access Variables
before using in “CaLabGet.vi” and “CaLabPut.vi”
THIS IS OPTIONAL
+ Field values with enums are displayed with correct enum string now
# EPICS base 3.14.12.7
# Update of online documentation
# Online documentation moved to http://hz-b.de/calab
– Input “ValueSetsInColums” removed
############### IMPORTANT ################
! Please, replace old CA Lab VIs!
The new VIs fit into old structures.
##########################################
———————————————————————–

All suggestions and comments are welcome!

Cheers
Carsten

Labview on a beaglebone black

 LabVIEW  No Responses »
Jul 102016
 

Package:

Makerhub https://www.labviewmakerhub.com/doku.php?id=libraries:linx:start

Install drivers for Windows or MacOS

Put New Operating System on the SD card:

Best done with MacOS:

diskutil unmountDisk /dev/disk3

sudo dd bs=1m if=bone-debian-8.4-lxqt-4gb-armhf-2016-05-13-4gb.img of=/dev/rdisk3

Start beaglebone with button pressed:

ssh root@192.168.178.46

at first start there is no password for root

change PW for root:

# passwd root

ADD new USER and change PW:

# adduser tom
# passwd tom

meke users sudo:

# sudo usermod -a -G sudo <username>
# sudo adduser <username> sudo

start makerhub from labview

Install software and expand the sd card

fetch

lock in with ssh:

# ssh root@192.168.178.46

 

check sd card size

# df -h

update with

# apt-get upgrade

#apt-get update

 

have FUN!

andere Wege die SD KArte zu vergrößern:

http://linux.robert-scheck.de/software/fdisk-partition-vergroessern/

 

LINUX Befehslsübersicht:

http://www.tnt-computer.de/yanip/lbefehle.html

 

Namen und Version der Linux Distribution von /etc/issue auslesen

Die gängigsten Distributionen speichern ihren Namen und die Release Version in der /etc/issue Datei ab:

# cat /etc/issue

1

How to diagnose VISA/RS-232 communication failure in LabVIEW?

 Uncategorized  No Responses »
Oct 082015
 

USB-RS-232 adapter cable:

You will see that many people have hit and miss luck with various manufactures of these devices. The difference is usually the chipset used by the device.

You can short circuit pin 2 with 3 on DB9 and see weather do you receive the same data you have sent over COM. If you do so it means that your USB-RS-232 adapter cable working properly.

Conversion of Hex Values to Floiting point and vis

 Uncategorized  No Responses »
Oct 082015
 

LabVIEW floating-point values use the IEEE-754 standard for storage and manipulation. A LV double is stored in eight bytes, a single uses four bytes. You can directly convert singles and doubles by wiring them to the ‘Type Cast’ primitive, found under Advanced->Data Manipulation palette. You’ll get a four- or eight-character string as output. (LV strings are the preferred representation for arbitrary byte stream data.)