RXDU

[JJK]

I am currently using the TXDU & RXDU command on a CS1. I have the TXDU functioning without any concerns. I am having difficulty seeing the received data (expected ACK  06). I can see the Reception Counter with the expected Nos of Bytes but when the RXDU is executed the count clears and no data in the allocated destination word D7000. I currently have the RXDU set up with no start or end code and the completion flag is used for the correct number of bytes.

I have also tried this using a different command which has a response of 2 bytes including end code 0D. Set up the serial settings to match, using the end code and I get the same issue. The RXDU is executed but no change of data in the Destination Word. expected 020d

Any advise much appreciated. What am I missing, ripping my hair out!!

Thanks

[lostcontrol]

If you post your code, someone should be able to see where the issue might be

[JJK]

control word 1 #0001

control word 2 #6113

received word D7050

and A202.6 and 1584.6 in loginc 

[lostcontrol]

1 hour ago, JJK said:

control word 1 #0001

control word 2 #6113

received word D7050

and A202.6 and 1584.6 in loginc 

Simple text descriptions don't show your code sorry

 

On 10/3/2018 at 10:24 PM, lostcontrol said:

If you post your code, someone should be able to see where the issue might be

 

[JJK]

Sorry Upload of code keeps failing

[Michael Walsh]

Just to confirm, this is unit 3, right?

What do you have for N in the RXDU command?

It should be set to n+10 (1585). 

If you run the test with an end code set to 0D, and then send 02 0D to the port, you would only have a size of 1 and would only receive a 02 value.  The end code is stripped away.  

[JJK]

Thanks for the reply.

Yes Unit 3. I currently have &1 set for N in the RXDU. I did try the 1585 previously and still nothing displayed/change in D7050.

I also have the port setting: No-Protocol Number of receive data bytes set to 1 also and I can modify this to get my completion flag to rise. Therefore I know this is working as expected

[Michael Walsh]

2 hours ago, JJK said:

I also have the port setting: No-Protocol Number of receive data bytes set to 1 also and I can modify this to get my completion flag to rise. Therefore I know this is working as expected

So, changing the number of bytes works, but not the end code?  I would guess that either you don't have the end code specified correctly, or the end code is not actually in the data.

[JJK]

There are two responses I get from the unit: one is 020D and the other is an ACK or NAK with no end code. When I set the unit with either end code or no of bytes I never see anything in the received buffer