Problem communication rs232 sysmac studio

[Sannin 0]

Hello everyone on the forum and happy new year. I have a problem and I hope you can help me. I have to communicate via RS-232 with a board that drives gate motors. Can you tell me which blocks to use on the Sysmac Studio (NX1P2-9024DT1 and NX1W-CIF01) to send and receive packets? I attach (apologies if I'm in Italian and not in English) the structure of the packages (and some examples) that accepts the card with the hope that you can help me. Thank you all and happy new year

Edited 5 Jan 2023 by Sannin

[pturmel 157]

Post links to the document sources if you can.

[Sannin 0]

https://ibb.co/d6HqPqB
https://ibb.co/TryWYH4
https://ibb.co/W0NQkpJ

Thanks

[photovoltaic 120]

7 hours ago, Sannin said:

Hello everyone on the forum and happy new year. I have a problem and I hope you can help me. I have to communicate via RS-232 with a board that drives gate motors. Can you tell me which blocks to use on the Sysmac Studio (NX1P2-9024DT1 and NX1W-CIF01) to send and receive packets? I attach (apologies if I'm in Italian and not in English) the structure of the packages (and some examples) that accepts the card with the hope that you can help me. Thank you all and happy new year

Looks like raw serial data. You'll need to setup the option board as no protocol and match the specs. The instructions you'll use are :

NX_SerialSend

NX_SerialRcv

It's good practice to use the NX_SerialBufClear before a new communication cycle as well but that's up to you. You'll need the node location variable which is hidden by default. You can display it and assign a tag by right clicking on the CIF01 in your IO Map and selecting "Display Node Location Port". The rest of the steps can be found in the instruction help file. I can't read Italian but if you need start or end codes you'll have to add them. There is an end code by default (0D).

 

 

Edited 5 Jan 2023 by photovoltaic

[Sannin 0]

Thank you for answering. I took an example from Omron where the card was an NX-CIF and modified it for use with the NX1W-CIF01. Regarding the use of the two blocks Send and Rcv, in the card manual it is written that the packet to be sent must be made up of four blocks starting from the left:

1 byte of "header",

1 byte of "data length",

0 to 252 bytes of "data",

1 byte of "checksum".

I tried to send an array, for example to restart the board, but despite the command being "DONE", I get no response and the board does not restart. Sure I'm wrong, but shouldn't the value of the array[0] be the "header" of the packet and the "size" on the "send" block equal to 1? Thank you

Edited 5 Jan 2023 by Sannin

[photovoltaic 120]

Can you link this section of the manual? My understanding is that you only send whatever you specify in the SendDat array.

[Sannin 0]

Unfortunately I only have the paper manual in Italian of which I took some photos and which I have attached in the post above

[photovoltaic 120]

42 minutes ago, Sannin said:

Unfortunately I only have the paper manual in Italian of which I took some photos and which I have attached in the post above

I meant the Omron manual where it claims that you need :

1 byte of "header",

1 byte of "data length",

0 to 252 bytes of "data",

1 byte of "checksum".

[Sannin 0]

Excuse me, maybe I wrote wrong, I meant the card manual

[photovoltaic 120]

38 minutes ago, Sannin said:

Excuse me, maybe I wrote wrong, I meant the card manual

Do you mean the gate control device needs to receive the data in that format?

[Sannin 0]

38 minutes ago, photovoltaic said:

Do you mean the gate control device needs to receive the data in that format?

Yes

[photovoltaic 120]

In that case, configure your SendDat accordingly.  For the hardware details command in your message you would:

SendDat[0] = byte#16#48

SendDat[1] = byte#16#01

SendDat[2] = byte#16#00

SendDat[3] = byte#16#49

Your SendSize would be 4. This will send "Jolly3" as the manual states.  Once sent you can check for received data and verify that it returned 49 hex.

[Sannin 0]

59 minutes ago, photovoltaic said:

In that case, configure your SendDat accordingly.  For the hardware details command in your message you would:

SendDat[0] = byte#16#48

SendDat[1] = byte#16#01

SendDat[2] = byte#16#00

SendDat[3] = byte#16#49

Your SendSize would be 4. This will send "Jolly3" as the manual states.  Once sent you can check for received data and verify that it returned 49 hex.

Okay.  So should I do four nx-Send blocks in series for each sendDat[n], or just one for sendDat[0]?  Thank you

[photovoltaic 120]

The Send block will send all of that data in one message - so just one. I can't upload pictures right now but you can set all those value and then set the size to 4.

 

[Sannin 0]

Okay. I'll let you know on Monday. Meanwhile, thanks again for the help, have a good weekend and best wishes

[Sannin 0]

Hello, I tried to apply your advice, but I don't get any response from the card, maybe I'm doing something wrong? Attached is the test file I used. The COMM led on the NX1W-CIF01 board is on steady.Thank you

 

https://www.dropbox.com/s/iom0cbqohztofn7/Prova.zip?dl=0

Edited 9 Jan 2023 by Sannin

[photovoltaic 120]

If you remove the cable does the light go out?

[Sannin 0]

39 minutes ago, photovoltaic said:

If you remove the cable does the light go out?

Yes

[photovoltaic 120]

This sounds a bit like a cable issue to me - I have seen this behavior with an incorrect cable before. Do you have a pinout for the gate controller?

[photovoltaic 120]

Just an FYI: wire it TX - TX and RX - RX.

[Sannin 0]

Ok, yes I have the board pinout, and I cross connected it, am I wrong?.  I knew it was wired Rx to tx and Tx to rx. However if I put them paired, rx with rx and tx with tx, the led turns off and turns on only when I send the command

Edited 9 Jan 2023 by Sannin

[photovoltaic 120]

2 hours ago, Sannin said:

Ok, yes I have the board pinout, and I cross connected it, am I wrong?.  I knew it was wired Rx to tx and Tx to rx. However if I put them paired, rx with rx and tx with tx, the led turns off and turns on only when I send the command

Correct. Its a bit confusing. TX-TX and RX-RX is correct from what I can find. Generally when the light stays on they are backwards. Is it communicating now?

[Sannin 0]

I'll try tomorrow and let you know, because I noticed the mistake at the end of the day.  Thanks anyway.  I keep it updated

[Sannin 0]

Hello, even changing the cable connection. Now the COMM led only lights up when I send packets, but I receive nothing

[photovoltaic 120]

Do you have the ability to communicate with the gate controller using your PC? ( a usb to serial converter). This is much easier to test with. Have you tried using either CR or LF (or both) as the end code?

Also a link to the manual will help.