<![CDATA[Ewon Technical Forum

<![CDATA[Ewon Technical Forum - All Forums]]> https://techforum.ewon.biz/ Thu, 25 Jun 2026 10:17:18 +0000 MyBB <![CDATA[HMI Access using M2Web over VNC]]> https://techforum.ewon.biz/thread-2868.html Wed, 03 Jun 2026 21:59:17 +0000 mitesh.maniar]]> https://techforum.ewon.biz/thread-2868.html
https://elearning.hms-networks.com/m2web...te-devices

As per link we can make HMI visible in m2web using VNC on port 5900. i have a question if accessing this way consumes data ? i have observed that after setting up that data consumption has increased too much and not clear how m2web setup work and how it make HMI visible in m2web ?

can anyone please provide some feedback ?

thanks,
Mitesh Maniar]]>
https://elearning.hms-networks.com/m2web...te-devices

As per link we can make HMI visible in m2web using VNC on port 5900. i have a question if accessing this way consumes data ? i have observed that after setting up that data consumption has increased too much and not clear how m2web setup work and how it make HMI visible in m2web ?

can anyone please provide some feedback ?

thanks,
Mitesh Maniar]]> <![CDATA[Flexy 205 firmware 15.0s2 downgrade to 14.x]]> https://techforum.ewon.biz/thread-2867.html Thu, 28 May 2026 07:40:19 +0000 SECA]]> https://techforum.ewon.biz/thread-2867.html Malgré toutes nos tentatives, y compris avec un ebuddy plus ancien qui accorde la possibilité de faire une "Recuperation d'Ewon", nous n'arrivons pas a downgrader un flexy 205 en firmware 15.0s2 vers la version 14.
Es-ce possible?
Si oui quel est la procédure?]]> Malgré toutes nos tentatives, y compris avec un ebuddy plus ancien qui accorde la possibilité de faire une "Recuperation d'Ewon", nous n'arrivons pas a downgrader un flexy 205 en firmware 15.0s2 vers la version 14.
Es-ce possible?
Si oui quel est la procédure?]]> <![CDATA[Datamailbox data loss on power cut]]> https://techforum.ewon.biz/thread-2866.html Wed, 27 May 2026 06:13:15 +0000 heyjay]]> https://techforum.ewon.biz/thread-2866.html
I'm using an ewon flexy 205 with historical logging and I configured datamailbox for our IOT application.

I discovered recently that I'm missing sometimes data.
After some investigations, I pointed the problem out. This happens when flexy loses Internet connection before a power cut. All data not sent between the Internet disconnection and the power cut are lost. If the module loses internet but reconnects before a power cut, then I don't lose any data.

So it seems the buffer is flushed when flexy is powered down or the datamailbox engine is not totally reliable.

In the same time, I'm using a MQTT BASIC script for another IOT application and I don't have the problem, all data are retrieved when ewon restarts and is connected back to Internet.

Does anyone can confirm if it's a known issue with datamailbox?

Thanks a lot]]>
I'm using an ewon flexy 205 with historical logging and I configured datamailbox for our IOT application.

I discovered recently that I'm missing sometimes data.
After some investigations, I pointed the problem out. This happens when flexy loses Internet connection before a power cut. All data not sent between the Internet disconnection and the power cut are lost. If the module loses internet but reconnects before a power cut, then I don't lose any data.

So it seems the buffer is flushed when flexy is powered down or the datamailbox engine is not totally reliable.

In the same time, I'm using a MQTT BASIC script for another IOT application and I don't have the problem, all data are retrieved when ewon restarts and is connected back to Internet.

Does anyone can confirm if it's a known issue with datamailbox?

Thanks a lot]]> <![CDATA[OPEN EBD file config.txt in text mode error]]> https://techforum.ewon.biz/thread-2865.html Mon, 18 May 2026 11:04:12 +0000 mickaa]]> https://techforum.ewon.biz/thread-2865.html
When i open a file config.txt with EBD in binary mode, i don't have error,

Code:
OPEN "exp:$dtCF $ftB" FOR BINARY INPUT AS 1

$ReadNext:

IF EOF $FileNumber% THEN GOTO $ReadDone ENDIF

$Char$=GET 1,1

print $Char$

Console: Read binary file ok

but, when i open a file config.txt with EBD in TEXT mode: i obtain this error: why?

Code:
OPEN "exp:$dtCF $ftT" FOR TEXT INPUT AS 1

$ReadNext:

IF EOF $FileNumber% THEN GOTO $ReadDone ENDIF

$Char$=GET 1,1

print $Char$

Console: Read text file ok

But if i read a many caractere at the same time, it work!

Code:
OPEN "exp:$dtCF $ftT" FOR TEXT INPUT AS 1

$ReadNext:

IF EOF $FileNumber% THEN GOTO $ReadDone ENDIF

$DATA$=GET 1,2048

print $DATA$

Console: Read DATA file OK

]]>
When i open a file config.txt with EBD in binary mode, i don't have error,

Code:
OPEN "exp:$dtCF $ftB" FOR BINARY INPUT AS 1

$ReadNext:

IF EOF $FileNumber% THEN GOTO $ReadDone ENDIF

$Char$=GET 1,1

print $Char$

Console: Read binary file ok

but, when i open a file config.txt with EBD in TEXT mode: i obtain this error: why?

Code:
OPEN "exp:$dtCF $ftT" FOR TEXT INPUT AS 1

$ReadNext:

IF EOF $FileNumber% THEN GOTO $ReadDone ENDIF

$Char$=GET 1,1

print $Char$

Console: Read text file ok

But if i read a many caractere at the same time, it work!

Code:
OPEN "exp:$dtCF $ftT" FOR TEXT INPUT AS 1

$ReadNext:

IF EOF $FileNumber% THEN GOTO $ReadDone ENDIF

$DATA$=GET 1,2048

print $DATA$

Console: Read DATA file OK

]]> <![CDATA[Can't downgrade from v15.0s2 to V14]]> https://techforum.ewon.biz/thread-2864.html Thu, 07 May 2026 11:22:38 +0000 FlamcoDaan]]> https://techforum.ewon.biz/thread-2864.html
I'm trying to downgrade an Ewon Flexy205 15.0s2 to V14

I've searched the forum and it says I need to use Ewon Recovery (F7) in eBuddy.

But in eBuddy my Ewon Recovery is grayed out.

I've tried to use a SD card with other firmware but also no success.

Please help.

Kind regards,

Daan

.png

Ewon Recovery.png (Size: 37,7 KB / Downloads: 8) ]]>
I'm trying to downgrade an Ewon Flexy205 15.0s2 to V14

I've searched the forum and it says I need to use Ewon Recovery (F7) in eBuddy.

But in eBuddy my Ewon Recovery is grayed out.

I've tried to use a SD card with other firmware but also no success.

Please help.

Kind regards,

Daan

.png

Ewon Recovery.png (Size: 37,7 KB / Downloads: 8) ]]> <![CDATA[Using Basic Change User Passwors]]> https://techforum.ewon.biz/thread-2863.html Tue, 28 Apr 2026 21:06:20 +0000 LuisEnrique]]> https://techforum.ewon.biz/thread-2863.html
I would like to be able to change a user's password on a Flexy version 15s2 system using only Basic.

Thanks in advance.

Luis]]>
I would like to be able to change a user's password on a Flexy version 15s2 system using only Basic.

Thanks in advance.

Luis]]> <![CDATA[Simple Store & Forward:How to send missed data from a text file after WAN restoration]]> https://techforum.ewon.biz/thread-2862.html Thu, 23 Apr 2026 07:01:02 +0000 leekhilk@ithena.ai]]> https://techforum.ewon.biz/thread-2862.html
I am currently using a Flexy 205 to collect data from PLCs via Modbus and OPC UA. I have a BASIC script that builds a JSON payload and sends it to my IoT platform using the REQUESTHTTPX command.

The Challenge:
Everything works well when the internet is connected. However, when the internet goes down, the REQUESTHTTPX command fails and the data is lost. I need a "Store and Forward" solution that is simple to manage.

My Required Logic:

I want to avoid complex system tools and handle this directly in my script using basic file logic:
Detection: If REQUESTHTTPX fails due to a network error, the script should identify that the internet is down.
Local Storage: Instead of losing the data, the script should append the JSON string to a simple text file on the Ewon (e.g., /usr/buffer.txt).
Restoration: Once the internet is back, the script should read that text file line-by-line and send the stored payloads to the server.

I want to keep this as manual and clear as possible so I can easily maintain the code. Any help or logic flows would be greatly appreciated!]]>
I am currently using a Flexy 205 to collect data from PLCs via Modbus and OPC UA. I have a BASIC script that builds a JSON payload and sends it to my IoT platform using the REQUESTHTTPX command.

The Challenge:
Everything works well when the internet is connected. However, when the internet goes down, the REQUESTHTTPX command fails and the data is lost. I need a "Store and Forward" solution that is simple to manage.

My Required Logic:

I want to avoid complex system tools and handle this directly in my script using basic file logic:
Detection: If REQUESTHTTPX fails due to a network error, the script should identify that the internet is down.
Local Storage: Instead of losing the data, the script should append the JSON string to a simple text file on the Ewon (e.g., /usr/buffer.txt).
Restoration: Once the internet is back, the script should read that text file line-by-line and send the stored payloads to the server.

I want to keep this as manual and clear as possible so I can easily maintain the code. Any help or logic flows would be greatly appreciated!]]> <![CDATA[Enable webserver WAN side with firmware 15]]> https://techforum.ewon.biz/thread-2861.html Wed, 22 Apr 2026 05:19:13 +0000 FlamcoDaan]]> https://techforum.ewon.biz/thread-2861.html
in our factory we use Ewon Flexy's 205 in combination with ViewOn for dashboarding.

The dashboard is shown on several TV's with Amazon firestick.

The firesticks need to connect to the Ewon via WAN side connection to show the ViewOn page.
With firmware 15 the webserver is now closed on the WAN side and we have no dashboard.

Is there a way to enable this again?
otherwise we need to downgrade the Ewons to firmware 14.

Kind regards,

Daan]]>
in our factory we use Ewon Flexy's 205 in combination with ViewOn for dashboarding.

The dashboard is shown on several TV's with Amazon firestick.

The firesticks need to connect to the Ewon via WAN side connection to show the ViewOn page.
With firmware 15 the webserver is now closed on the WAN side and we have no dashboard.

Is there a way to enable this again?
otherwise we need to downgrade the Ewons to firmware 14.

Kind regards,

Daan]]> <![CDATA[Tag value rounding from 0.0054 to 0.1 during PRINT conversion]]> https://techforum.ewon.biz/thread-2860.html Tue, 21 Apr 2026 12:52:03 +0000 leekhilk@ithena.ai]]> https://techforum.ewon.biz/thread-2860.html
I am seeking guidance on a data precision issue I’m encountering with an Ewon Flexy 205.

The Setup:

Hardware: Flexy 205

Protocol: Reading tags via OPCUA.

The Observation: In the Flexy "Values" tab (UI), the tag Blower_A2_Spd_Ctrl_Mode correctly displays as 0.0054.

The Problem:
When I attempt to use this value in a BASIC script (either to print to the console or build an HTTP JSON payload), the value is being rounded aggressively.

PRINT Blower_A2_Spd_Ctrl_Mode@ // Output in console: 0.1

Any guidance from the experts here would be greatly appreciated!]]>
I am seeking guidance on a data precision issue I’m encountering with an Ewon Flexy 205.

The Setup:

Hardware: Flexy 205

Protocol: Reading tags via OPCUA.

The Observation: In the Flexy "Values" tab (UI), the tag Blower_A2_Spd_Ctrl_Mode correctly displays as 0.0054.

The Problem:
When I attempt to use this value in a BASIC script (either to print to the console or build an HTTP JSON payload), the value is being rounded aggressively.

PRINT Blower_A2_Spd_Ctrl_Mode@ // Output in console: 0.1

Any guidance from the experts here would be greatly appreciated!]]> <![CDATA[Flexy Device Manager Access]]> https://techforum.ewon.biz/thread-2859.html Thu, 02 Apr 2026 12:52:07 +0000 abrannon]]> https://techforum.ewon.biz/thread-2859.html

https://tools.ewonsupport.biz/flexy-devi...r/list.php]]>

https://tools.ewonsupport.biz/flexy-devi...r/list.php]]> <![CDATA[Download a file from /usr directory using only BASIC]]> https://techforum.ewon.biz/thread-2858.html Thu, 26 Mar 2026 20:46:21 +0000 LuisEnrique]]> https://techforum.ewon.biz/thread-2858.html Hi to everybody!

I 'd like to download a file from /usr directory using only BASIC Script: I know I can do it in ViewON using a button opening url "/usr/my_file.txt" but I need to execute some code before opening the file; is it possible?

Thk.

Luis]]> Hi to everybody!

I 'd like to download a file from /usr directory using only BASIC Script: I know I can do it in ViewON using a button opening url "/usr/my_file.txt" but I need to execute some code before opening the file; is it possible?

Thk.

Luis]]> <![CDATA[Block FileZilla to WRITE (Only) to Flexy]]> https://techforum.ewon.biz/thread-2857.html Thu, 26 Mar 2026 18:25:35 +0000 LuisEnrique]]> https://techforum.ewon.biz/thread-2857.html
I'm currently using FileZilla to extract (read) information from the Flexy's external SD card, but my client wants me to block FileZilla from writing to that card. I'd like to know how to do this.

Thanks in advance.

Luis]]>
I'm currently using FileZilla to extract (read) information from the Flexy's external SD card, but my client wants me to block FileZilla from writing to that card. I'd like to know how to do this.

Thanks in advance.

Luis]]> <![CDATA[2x Flexy - direct connection]]> https://techforum.ewon.biz/thread-2856.html Thu, 05 Mar 2026 16:48:19 +0000 mnieuzyla]]> https://techforum.ewon.biz/thread-2856.html
I'm testing the option for direct connectivity between two sites using two Flexy routers.
I have the static WAN address mapped to external, static IP, I'd like to use it for the server. However, when I try to configure the server side(using AUG015, Linking 2 Sites Together Using VPN) I noticed weird behaviour.
WAN connection is configured successfully, but when I go to the VPN config, I'm setting the parameters:
Listen for incoming VPN from client
VPN Incoming, set passphrase, VPN IP automatic
I hit the Update, and it looks that all is set. However, after a short while it looks like it goes back to the outgoing connection mode - even in comcfg file VPNCnxType changes from 1 (incoming connection) to 2 (outgoing connection).
What could be wrong? Flexy is recently updated to v15.0s2.]]>
I'm testing the option for direct connectivity between two sites using two Flexy routers.
I have the static WAN address mapped to external, static IP, I'd like to use it for the server. However, when I try to configure the server side(using AUG015, Linking 2 Sites Together Using VPN) I noticed weird behaviour.
WAN connection is configured successfully, but when I go to the VPN config, I'm setting the parameters:
Listen for incoming VPN from client
VPN Incoming, set passphrase, VPN IP automatic
I hit the Update, and it looks that all is set. However, after a short while it looks like it goes back to the outgoing connection mode - even in comcfg file VPNCnxType changes from 1 (incoming connection) to 2 (outgoing connection).
What could be wrong? Flexy is recently updated to v15.0s2.]]> <![CDATA[SYS or COM parameters for activate SD CARD]]> https://techforum.ewon.biz/thread-2853.html Thu, 12 Feb 2026 16:32:08 +0000 mickaa]]> https://techforum.ewon.biz/thread-2853.html
- I had an SD card that worked on an Ewon in user expansion mode before I performed a type 2 reset on the Ewon. I can't get the SD card working again (EaseUS + ext3 + clusters = 4kb).

- I disconnect the power before removing/inserting the SD card.
- I tested with two other new SD cards... No luck.
- I have no information in my event log.

- Are there any SYS or COM parameters I should check that could be blocking the SD card from working?]]>
- I had an SD card that worked on an Ewon in user expansion mode before I performed a type 2 reset on the Ewon. I can't get the SD card working again (EaseUS + ext3 + clusters = 4kb).

- I disconnect the power before removing/inserting the SD card.
- I tested with two other new SD cards... No luck.
- I have no information in my event log.

- Are there any SYS or COM parameters I should check that could be blocking the SD card from working?]]> <![CDATA[Using a user's saved password without writing it in plain text into the program?]]> https://techforum.ewon.biz/thread-2852.html Thu, 12 Feb 2026 12:58:55 +0000 mickaa]]> https://techforum.ewon.biz/thread-2852.html Is there a way to use a saved user's password without writing it in plain text in the program?

In this code, I would like to hide, for example, "AuthPwdA:adm"

Code:
IF $ServName$="OPCUA" THEN 

  IF $Topic$="A" THEN 

    $RetLine$="EnabledA:1"+EoL$+"EndpointUrlA:opc.tcp://"+EWON_GENERATOR_IP$+":4840"+EoL$+"UserTokenTypeA:1"+EoL$+"AuthUserA:adm"+EoL$+"AuthPwdA:adm"+EoL$+"MessageSecurityModeA:1"+EoL$+"SecurityPolicyUriA:0"+EoL$

    $RetLine$=$RetLine$+"EnabledB:0"+EoL$+"UserTokenTypeB:0"+EoL$+"MessageSecurityModeB:1"+EoL$+"SecurityPolicyUriB:0"+EoL$

    $RetLine$=$RetLine$+"EnabledC:0"+EoL$+"UserTokenTypeC:0"+EoL$+"MessageSecurityModeC:1"+EoL$+"SecurityPolicyUriC:0"+EoL$

    $RetLine$=$RetLine$+'NamespaceArrayA:["http://opcfoundation.org/UA/", "urn:ewon-2230-1105-24:ewon:ewontags", "http://opcfoundation.org/UA/DI/", "http://PLCopen.org/OpcUa/IEC61131-3/", "http://ewon.biz/Ewontags/"]'

  ENDIF

ENDIF

]]> Is there a way to use a saved user's password without writing it in plain text in the program?

In this code, I would like to hide, for example, "AuthPwdA:adm"

Code:
IF $ServName$="OPCUA" THEN 

  IF $Topic$="A" THEN 

    $RetLine$="EnabledA:1"+EoL$+"EndpointUrlA:opc.tcp://"+EWON_GENERATOR_IP$+":4840"+EoL$+"UserTokenTypeA:1"+EoL$+"AuthUserA:adm"+EoL$+"AuthPwdA:adm"+EoL$+"MessageSecurityModeA:1"+EoL$+"SecurityPolicyUriA:0"+EoL$

    $RetLine$=$RetLine$+"EnabledB:0"+EoL$+"UserTokenTypeB:0"+EoL$+"MessageSecurityModeB:1"+EoL$+"SecurityPolicyUriB:0"+EoL$

    $RetLine$=$RetLine$+"EnabledC:0"+EoL$+"UserTokenTypeC:0"+EoL$+"MessageSecurityModeC:1"+EoL$+"SecurityPolicyUriC:0"+EoL$

    $RetLine$=$RetLine$+'NamespaceArrayA:["http://opcfoundation.org/UA/", "urn:ewon-2230-1105-24:ewon:ewontags", "http://opcfoundation.org/UA/DI/", "http://PLCopen.org/OpcUa/IEC61131-3/", "http://ewon.biz/Ewontags/"]'

  ENDIF

ENDIF

]]>