Serial Communication - Basic Serial Write and Read. Publish Date. Michael pollan unhappy meals pdf. For more Serial examples please see the related resources or the LabVIEW Example Finder. Using LabVIEW with serial ( RS232, RS485 ) data acquisition interfaces. The VI used in this example can be downloaded in zip format using the following link. This sounds like a fairly common use of LabVIEW and you should certainly be able to do it. There are shipping examples for serial communication (i.e. Basic Serial. Serial communication GUI using Labview. Serial communication GUI using Labview. Skip navigation Sign in. Serial Communication using Labview.avi. ![]() I would not describe serial communication as particularly easy or simple to start with, but doing such communication with the U12 is pretty easy. That is, if you understand the serial communication protocol and know what to do, the U12 is a pretty easy way to do it. The U12 does have some support for synchronous and asynchronous serial communication. See Sections 4.34 and 4.12-4.13 of the U12 User's Guide. There are VIs to call these functions in the standard U12 LabVIEW stuff: Also see the LJU12spi archive on the U12 downloads page. In fact I can do serial com using the NI serial Loopback sample and my computer RS232 and a MAX232 (because the serial com comes from a microcontroller) I have to send strings to the uC and the uC reply me a string To avoid using MAX232 I could use two digital I/O of the labjack board (one for TX, other one for RX). But I don't see in your sample the Vi that could fit to me needs. Labview Rs232 Serial Communication ExampleThe first step would be to do a loopback (connecting TX to RX) to test it. And to send string and see the echo string. As you can see I don't need to know the serial protocol to use the NI serial Loopback sample I just need to know what string I want to send to the device. Best regards. I found the protocole here FADEC RS232 protocol. Hardware: The pin out of the RJ45 connector is: 1-Ground 2- +5VDC 5- TX 7- RX Levels are TTL. Locate the pin 1 with a ohmmeter, it is connected to the brown pin of the servo lead. To connect to a PC it is necessary a RS232 level converter, like the MAX232 Protocol: RS232 interface, 2400 Baud, 8 bit, no parity. The data is organized in frames of 50 bytes, The description of each byte is (values are in decimal): 1. First byte of frame alignment, always 252 2. Second byte of frame alignment, always 253 3 to 34: HDT text in ASCII 35 to 39: not yet used. 40: RPM (8bit) 0-255, resolution of 1000RPM, 1 measure each 0,1s 41. Servo pulse width (Low Byte) 42. Servo pulse width (High Byte) 43. Pump power (PWM) (0-255), divide by 2,55 to have percentage. Value of the auxiliary analog input (0-255) 45. Relative throttle position (0-255), divide by 2,55 to have percentage. Voltage of pump. Multiply by 0.06 or 0.04 (depends of fadec type) to have the right value) 47. Multiply by 4. Only in pressure type units. RPM Low Byte. Resolution 100RPM. 1 measure each 0,5s 50. RPM High Byte The byte assignment can change in future software releases. So I gather the device just spontaneously sends data. Is it continuous (no delay between each 50 byte packet), at predictable intervals (known delay between each packet), or random events (unknown delay between each packet)? I don't think this will work with the U12: 1. It really needs command/response type communication, not spontaneous input. The 50-byte data packet is too big for the U12 which can handle 18 bytes per read. You might consider the U3 or UE9, which should be able to handle this.
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