Problem in display of HEX

[archit0392]

I have send a hex code as shown in diagram.By the output I am getting in array Is coming out as shown.I want the output also to be displayed in HEX (ie same format as i have send ).What is the error.?

please help... 

[mikeporter]

You need to change the radix of the display to hexidecimal.

Mike...

[archit0392]

Hi Mike, 

After i changed the radix to hexadecimal, This is what I am getting ie a shifted pattern.

[mikeporter]

Good! -- or is this not what you expected?

Mike. .

[archit0392]

Why is the element 'CA' is 1st in output whereas I send it last in input..

Thanks 

[Sam_Sharp · Accepted solution]

Is it returning the data from a previous execution? If you somehow wrote more data than (I'm assuming it's a loopback) you're reading then you will have items in your serial buffer that will remain until you either flush the buffer or read them all out (which won't happen if you write and then read 8 bytes every time).

You can try the 'get bytes at port' property node to see how many items are in the serial buffer.

[archit0392]

Thanks sam.

I used a property node(no of bytes) before VISA read and got the exact data. 

[mikeporter]

Did you use the output of the node to define how many bytes you are reading?

Mike...

[crossrulz]

1. You should probably flush the VISA buffer right after you configure the port (before the loop).  This will make sure there is not any data left in the buffer from a previous run.

2. If you know how many bytes are in your message to read, read that many bytes.  Using the Bytes At Port can introduce some interesting race conditions or cause you to insert a lot of delay that is not necessary.

3. I highly recommend showing your radix on numerics, especially if they are not using the normal display.  This help eliminate a lot of confusion.  "I am sending you 10."  "Then why am I seeing 16?  Are you in decimal or hex?" (actual conversation)