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To celebrate Project 14's birthday, I'm going to make a programmable switch with an Arduino UNO. This post describes the second block for the LabVIEW driver: Switch Control
In the previous post I reviewed the Initialization block. This post is about the key block of the library. We control relays via LabVIEW. |
Switch Control
This is the key block in the library. it controls the relays.
You'll use this to turn the relays on and off.
Additional to the standard VISA and Error in/outs, this block accepts two parameters:
- Channel (1|2): the relay that will be controlled by this block
- Enable (true|false): switch the relay on or off
These parameters speak for themselves.
Let's look at the flow:
The flow takes the input parameters Channel and Enable. It then creates a SCPI command that's sent to the Arduino.
There's one case block in this flow, that defines the parameter for ON or OFF:
The result is a SCPI string like
:DIGITAL:SWITCH1: ON
Here's an example on how to use this block:
