Problem creating inputs, outputs and text in Scilab Script Block
I have recently installed the Labview to Scilab Gateway. I am running Labview 11.0 and Scilab 5.3.3. The example files run properly, However, when I try to define any inputs, or outputs, there is no option to add the ports. The block also ignores any text I type in it or copy to it. I have been trying this on a blank vi.
Solved!
Go to Solution.
Hi Ronny,
I have a few more questions to help us debug this issue. You said you tried the same right-click procedure to create inputs and outputs on a normal script block and it worked as expected. What specifically do you mean by a "normal script block"?
How did you drop the empty Scilab script node on a blank VI? Did you drop it from a palette or paste it from another VI?
Can you post an image of your Help >> About LabVIEW screen (feel free to obscure your name, company, and license number)? If not, can you provide the LabVIEW version number specified from that screen? There have been a few patches to LabVIEW 2011 and it will help us to reproduce the issue if we know exactly which version you have. Also on that screen, do you have LabVIEW Base, Full, or Professional (or maybe an Evaluation or Student edition)? The Scilab script node will not work in LabVIEW Base and the right-click menu will look as you describe. You can verify your LabVIEW activation in the NI License Manager.
Do you have any other versions of LabVIEW installed on your computer? Is LabVIEW 2011 the most recent LabVIEW you installed? How about previous versions of Scilab? Do any previous versions remain or did you remove a previous version of Scilab AFTER installing Scilab 5.3.3?
Grant M.
Senior Software Engineer | LabVIEW Tablets | National Instruments
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Thanks!Thibaud,
The clue is here: " i take acquisition with one sample on demand."
You are apparently using software timed output. To maintain accurate phasing at 80 Hz you need timing which is accurate to better than 4 milliseconds. This is not likely to occur with a desktop operating system. Sometimes it will be good and other times OS latencies will throw the timing way off.
If your board supports it, use hardware timing. The timebase sources on most boards are far more precise and accurate than software timing.
Lynn -
UMI-7774 Axis1 Inhibit input/output (and Fault +/-) to corresponding Servo Drive signals
Hi,
I have servo drive (yaskawa sigma fsp) that i configured to work in Position command mode,
And i want to connect it to UMI-7774 with PCI-7344 also configured in MAX to work in P-Command mode.
The Servo drive has these signals:
/S-ON (Servo ON input)
ALM+ (Servo alarm output)
ALM (Servo alarm output)
The UMI-7774 on its Control Connector of Axis1 has these signals:
Enable
Fault+
Fault-
i read the umi7774 manual and also the servo drive manual, and didnt understand all the things because
the umi7774 manual named the signals Inhibit-input, inhibit-output
but there is no signals in this name on the UMI-7774/Axis1/Control Connector.
So, i think the wiring i need to make is :
[Servo Drive] /S-ON < to > [UMI-7774/Axis1/Control Connector] Enable
[Servo Drive] ALM+ < to > [UMI-7774/Axis1/Control Connector] Fault+
[Servo Drive] ALM < to > [UMI-7774/Axis1/Control Connector] Fault-
is [UMI-7774/Axis1/Control Connector] Enable is same as Inhibit-Output ?
what about the inhibit-input, is the ALM+ from the drive is acting this role ?
And, because the servo drive and the pci7344 configured to P-Command (Position command) mode,
The control signals is connected in this way :
[Servo Drive] PULS < to > [UMI-7774/Axis1/Control Connector] Step (CW)
[Servo Drive] /PULS < to > [UMI-7774/Axis1/Control Connector] Digital Ground
[Servo Drive] SIGN < to > [UMI-7774/Axis1/Control Connector] Dir (CCW)
[Servo Drive] /SIGN < to > [UMI-7774/Axis1/Control Connector] Digital Ground
And for the feedback connector :
[Servo Drive] PAO < to > [UMI-7774/Axis1/Control Connector] Encoder Phase A
[Servo Drive] /PAO < to > [UMI-7774/Axis1/Control Connector] Encoder Phase A-
[Servo Drive] PBO < to > [UMI-7774/Axis1/Control Connector] Encoder Phase B
[Servo Drive] /PBO < to > [UMI-7774/Axis1/Control Connector] Encoder Phase B-
[Servo Drive] PCO < to > [UMI-7774/Axis1/Control Connector] Encoder Index
[Servo Drive] /PCO < to > [UMI-7774/Axis1/Control Connector] Encoder Index-
i read the ni-motion manual,pci-7344 and umi7774 manual and also the articles about configuring the Position Command mode
including the MAX setting.
i finally start to understand the setting after i read the PCI7390 which is position-comannd controller.
i just need to know if what i write here is correct.
(The servo drive manual is here:
http://www.yaskawa.com/site/products.nsf/products/Servo%20Amplifiers~fspsigma.html?openDocument&seq=... )
Last thing, the "How to connect the 73xx inhibit and command signal outputs to third party drives" article
(http://zone.ni.com/devzone/cda/tut/p/id/3442 )
shows that we need resistors etc.. to connect the signals between the servo drive and umi-7774,
can i directly connect the signals using Pigtail cables the National instruments provide?
Thanks
MotiDear Vince,
this is the description from the servo drive manual about the following signals:
[Servo Drive] PULS (Reference pulse input)
[Servo Drive] SIGN (Reference pulse input)
[Servo Drive] PAO (PG divided output A-phase) same for PBO,PCO
i understand the following connection that i write here (for control and feedback)
from the PCI 7390 users manual (Table B-7 on Page B-15 : CN1 cable pin assignments)
the table shows the signals from the MCA-7790Y which is accessory
for connecting the pci7390 to Yaskawa Sigma 2 drive (which is the same as Yaskawa Sigma FSP drive).
So, is that the correct connections for using the umi7774 and this servo drive in position command mode ? :
[Servo Drive] PULS < to > [UMI-7774/Axis1/Control Connector] Step (CW)
[Servo Drive] /PULS < to > [UMI-7774/Axis1/Control Connector] Digital Ground
[Servo Drive] SIGN < to > [UMI-7774/Axis1/Control Connector] Dir (CCW)
[Servo Drive] /SIGN < to > [UMI-7774/Axis1/Control Connector] Digital Ground
And for the feedback connector :
[Servo Drive] PAO < to > [UMI-7774/Axis1/Control Connector] Encoder Phase A
[Servo Drive] /PAO < to > [UMI-7774/Axis1/Control Connector] Encoder Phase A-
[Servo Drive] PBO < to > [UMI-7774/Axis1/Control Connector] Encoder Phase B
[Servo Drive] /PBO < to > [UMI-7774/Axis1/Control Connector] Encoder Phase B-
[Servo Drive] PCO < to > [UMI-7774/Axis1/Control Connector] Encoder Index
[Servo Drive] /PCO < to > [UMI-7774/Axis1/Control Connector] Encoder Index-
thanks for your reply , i appreciate your help
since i'm alone in this, unfortunately i cant get help on this issue from anyone.
Please verify that what i write here is correct.
Regards,
Moti -
Problems creating an array and mixing them up
I am trying to create an array (1-35), mix that array and display the results with a trace. I am getting an error withthe following code.
public function generateArray(toNumber : int) : Array {
var result : Array = [];
for (var i : int = toNumber; i != 0; i--) {
result.push(i);
return result;
public function shuffle (a:Array,i:int):Array
{var rndm:int;
var b:Array = a.slice();
var c:Array = [];
while (i) {
rndm = Math.random() * b.length;
c.push(b.splice(rndm,1)[0]);
i--;
return c;
/*limit question display to 35*/
generateArray(35);
trace(generateArrays);
the error(s) are:
1180: Call to a possibly undefined method generateArray.
1120: Access of undefined property generateArrays.
please assist with resolving these problems.
thanks in advance!generateArray(35) and that trace() must be inside a method (or methods). for example,
internal class Mixer {
//retains the array that is consulted for random question numbers
private var randomizedOrder:Array;
//CONSTRUCTOR - passed total number of questions in section
public function Mixer (questnsTotal:Number) {
randomizedOrder = new Array();
randomizedOrder[0] = Math.floor(Math.random()*questnsTotal);
for (var i:Number=1; i<questnsTotal; i++) {
randomizedOrder[i] = newNumber(questnsTotal, i);
for (var k:Number=0; k<questnsTotal; k++) {
trace(""+k+": "+randomizedOrder[k]);
/*limit question display to 35*/
generateArray(35);
trace(generateArray);
//recursive function that creates a new number until it creates one that isn't already in use
private function newNumber (qTotal:Number, curNum:Number):Number {
var newNum:Number = Math.floor(Math.random()*qTotal);
for (var j:Number=0; j<curNum; j++) {
if (randomizedOrder[j] == newNum) {
return newNumber(qTotal, curNum);
return newNum;
public function generateArray(toNumber : int) : Array {
var result : Array = [];
for (var i : int = toNumber; i != 0; i--) {
result.push(i);
return result;
public function shuffle (a:Array,i:int):Array
{var rndm:int;
var b:Array = a.slice();
var c:Array = [];
while (i) {
rndm = Math.random() * b.length;
c.push(b.splice(rndm,1)[0]);
i--;
return c;
//This is how external classes acquire a random number from this class's array
//(programNum = the question the program wants to ask next, based on sequential order, or user selection)
internal function getRandomNumber(programNum:Number):Number {
return randomizedOrder[programNum];
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