Can not connect serial com and Devices not configured!!!

[yongchaow]

Several days ago, I can connect to my devices via serial coms successfully. But I do not know what I changed, and there are several problems. I can not connect to my devices via serial coms, and I can not read data from IOs of MIO and DIO.

2023-03-23 224239.png (36.13 KiB) Viewed 16505 times

Then I piTest via SSH and found the modules are present but not configured.

pi@RevPi20726:~ $ piTest -d
Found 3 devices:

Address: 0 module type: 105 (0x69) RevPi Connect V1.0
Module is present, but NOT CONFIGURED!!!
input offset: 0 length: 6
output offset: 6 length: 5

Address: 31 module type: 96 (0x60) RevPi DIO V1.5
Module is present, but NOT CONFIGURED!!!
input offset: 11 length: 70
output offset: 81 length: 18

Address: 30 module type: 118 (0x76) RevPi MIO V1.0
Module is present, but NOT CONFIGURED!!!
input offset: 99 length: 34
output offset: 133 length: 27


Please help me with the problem, thanks.

[u.biakoup]

Hello Yongchaow,

please have a look the Codesys checklist.
What do you means with "serial coms". Do you get an error message when you try to connect to the unit?

Best Regards

Ulrich Kouatang Biakoup | Technical Support

[yongchaow]

Hello Yongchaow,

please have a look the Codesys checklist.
What do you means with "serial coms". Do you get an error message when you try to connect to the unit?

Best Regards

Ulrich Kouatang Biakoup | Technical Support

I have check the checklist:
1. CODESYS Control for Raspberry Pi MC SL - 4.6.0.0 : I use 4.7.0.0, I think this is not the problem because I have successed to connect to my device in this version (4.7.0.0)
2. Driver RevolutionPiBridgeV1.2.1.0 : I use V1.2.0.0. Today, I update the version to V1.2.1.0, I hope this will work.
3. I did not install CODESYS Control for Raspberry Pi MC SL - 4.4.0.0 (ID: 12071).

"serial coms" are the interfaces of serial communication. I use RS485 interface and a USB interface of Revolution Pi Connect.

[yongchaow]

Hello Yongchaow,

please have a look the Codesys checklist.
What do you means with "serial coms". Do you get an error message when you try to connect to the unit?

Best Regards

Ulrich Kouatang Biakoup | Technical Support

I found a reason but not all. I solved the serial communication problem. Because these lines:
[SYScom]
Linux.Devicefile=/dev/ttyUSB
in CODESYSControl.cfg was deleted and /dev/ttyUSB0, USB1, USB2 changed to ttyUSB1, USB2,USB3. I changed them and reboot to solve the communication problem via RS485 and USB1.

But the red triangle before MIO and DIO are still exist. Should I change CODESYS Contral of Raspberry 4.7.0.0 to 4.6.0.0?

[yongchaow]

Hello Yongchaow,

please have a look the Codesys checklist.
What do you means with "serial coms". Do you get an error message when you try to connect to the unit?

Best Regards

Ulrich Kouatang Biakoup | Technical Support

Hi, Ulrich
I have finish the checklist,
1. RevolutionPiBridgeV1.2.1.0
2. CODESYS Control for Raspberry Pi MC SL - 4.6.0.0
3. CODESYS Runtime V3.5.18 (V3.5 SP18 or an older version)
But the problem is still here.

屏幕截图 2023-03-30 000145.png (13.45 KiB) Viewed 16073 times

And I did not get an error message when I tried to connect to MIO and DIO. Could you please help me to solve the problems?

Regard,
Yongchaow

[yongchaow]

I found the reason.
In Pictory, I reconfig the RevPi connect, MIO, and DIO. I can connect them succefully. But I can not communication with my devices (Flow meter) via RS485.
Then I open /etc/CODESYSControl.cfg and Add

[SysCom]
Linux.Devicefile=/dev/ttyUSB

MIO and DIO did not work, and the serial communication via RS485 works.

So Could you please tell me how to solve the problem?

Thanks,
Yongchaow

[u.biakoup]

Hi yongchaow,

Please use Revolution Pi Library for CODESYS V1.3.0.0 (ID: 4712) not RevolutionPiBridgeV1.2.1.0.
CODESYS Runtime V3.5.18 is only compatible with CODESYS Control for Raspberry Pi MC SL - 4.6.0.0 and Revolution Pi Library for CODESYS V1.3.0.0 (ID: 4712).

Please, make sure that you have the suitable setup.

Best Regards

Ulrich Kouatang Biakoup | Technical Support