led in on state without blinking

[manu_mt]

when i am sending the digital number corresponding led must be turned on until the signal is present.can anyone help how to achieve it in labview

[Dennis_Knutson]

Far too little information here. What digital number, what led, and what signal? Attach the code you have with some details.

[manu_mt]

i am giving a digital number through access port...this digital is converterd to binary and for each bit one led (boolen led is attached) in labview. so when i send data i am able to see the blinking of led. but what i require is led must not be blinking,they must be in on state untill signal is present. how to do it?

[altenbach]

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@manu_mt wrote:

i am giving a digital number through access port...this digital is converterd to binary and for each bit one led (boolen led is attached) in labview. so when i send data i am able to see the blinking of led. but what i require is led must not be blinking,they must be in on state untill signal is present. how to do it?

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You are still not providing any useful information.

• What is an "access port"?
• What is the datatype of the number?
• How are you "sending" data?
• What is the "signal" that needs to be present?
• Are these virtual LEDs on the front panel or real LED connected to some circuit?
• If these LEDs are virtual, are they blinking by alternating the value or are they blinking because they have such a propery set?

Please attach a simplified version of your program.

[daveTW]

Still it's hard to understand, what your problem is. Please attach a screenshot of the Front Panel and Block Diagram or attach the VI.

• which access port do you mean? How do you access it ? VISA?
• How is it converted? Typecast? Flattened to String? Digital to String?
• How is the boolean LED atached? To what?

Be more specific!

[daveTW]

Two guys, same questions...

[manu_mt]

Actually i am new to this software thats why i am unale to tell u exactly...i will try my best to explain my problem.

access port is like serial port...it used to send data to labview and see output data from labview. My problem is when i am giving digital number say for example 8..in binary it will be 1000 so the 4th virtual led in labview front pannel will be glowing but here it is blinking. i want it to remain in glow state untill i change the data in serial port.

here i am interfacing access port and labview by usb-uart driver( it will have transmiter and receiver).. i hope i am clear......the led used is virtual one(boolen).

data is read from port ie property node and is converted to string and this is converted into array. for these array boolens are connected.

led are blinking wihtout any alternate value

[Dennis_Knutson]

Unless you've set the blinking property node to true, an led indicator will only blink if you are continuously writing a true/false to it. Since you still have not attached any code or a snippet of the block diagram so that someone can see what you've done, my only suggestion is to not write a true/false to it continuously. How many times do people have to ask you to attach your code?

[manu_mt]

i am sorry ...........i can't attach my code as it confidential......

[Dennis_Knutson]

Surely you can make a simple VI without any proprietary information.