<![CDATA[Ewon Technical Forum

<![CDATA[Ewon Technical Forum - All Forums]]> https://techforum.ewon.biz/ Mon, 25 May 2026 08:01:11 +0000 MyBB <![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: 6) ]]>
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: 6) ]]> <![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

]]> <![CDATA[Every Java program ends in "ZipException: bad header in central file directory"]]> https://techforum.ewon.biz/thread-2851.html Fri, 06 Feb 2026 17:20:37 +0000 cracksalad]]> https://techforum.ewon.biz/thread-2851.html
I just started tinkering around with the Flexy 205 and want to write a Java program for MQTT as at least half of you guys seem to do. Sadly, I always run into

Code:
java.util.zip.ZipException: bad header in central file directory

    at java.lang.Throwable.(Unknown Source)

    at java.lang.Throwable.(Unknown Source)

    at java.lang.Exception.(Unknown Source)

    at java.io.IOException.(Unknown Source)

    at java.util.zip.ZipException.(Unknown Source)

    at java.util.zip.ZipFile.readEntries(Unknown Source)

    at java.util.zip.ZipFile.locateEndCD(Unknown Source)

    at java.util.zip.ZipFile.getEntries(Unknown Source)

    at java.util.zip.ZipFile.(Unknown Source)

    at java.util.jar.JarFile.(Unknown Source)

    at java.util.jar.JarFile.(Unknown Source)

    at wonka.vm.ClassLoaderURLHandler.createClassLoaderURLHandler(Unknown Source)

    at wonka.vm.ClassLoaderURLHandler.createClassLoaderURLHandlers(Unknown Source)

    at java.net.URLClassLoader.(Unknown Source)

    at wonka.vm.ApplicationClassLoader.(Unknown Source)

    at wonka.vm.ApplicationClassLoader.getInstance(Unknown Source)

    at java.lang.ClassLoader.createApplicationClassLoader(Unknown Source)

    at java.lang.System.(Unknown Source)

    at java.lang.System.(Unknown Source)

    at wonka.vm.Init.main(Unknown Source)

Init: no such class as MainClass in class path!

Init: no start class found.  Game over.

I assume, that the last two lines are a consequence of the exception.

I tried different JARs, a self made one as well as a MQTT_EWONSUPPORT.jar, which I found here in the forum.
I execute the JVM/JAR by entering this URL in my browser:

Code:
http://192.168.1.250/rcgi.bin/jvmCmd?cmd=start&runCmd=%20-heapsize%205M%20-classpath%20/usr/MQTT_EWONSUPPORT.jar%20-emain%20MainClass

Code:
java.util.zip.ZipException: bad header in central file directory

    at java.lang.Throwable.(Unknown Source)

    at java.lang.Throwable.(Unknown Source)

    at java.lang.Exception.(Unknown Source)

    at java.io.IOException.(Unknown Source)

    at java.util.zip.ZipException.(Unknown Source)

    at java.util.zip.ZipFile.readEntries(Unknown Source)

    at java.util.zip.ZipFile.locateEndCD(Unknown Source)

    at java.util.zip.ZipFile.getEntries(Unknown Source)

    at java.util.zip.ZipFile.(Unknown Source)

    at java.util.jar.JarFile.(Unknown Source)

    at java.util.jar.JarFile.(Unknown Source)

    at wonka.vm.ClassLoaderURLHandler.createClassLoaderURLHandler(Unknown Source)

    at wonka.vm.ClassLoaderURLHandler.createClassLoaderURLHandlers(Unknown Source)

    at java.net.URLClassLoader.(Unknown Source)

    at wonka.vm.ApplicationClassLoader.(Unknown Source)

    at wonka.vm.ApplicationClassLoader.getInstance(Unknown Source)

    at java.lang.ClassLoader.createApplicationClassLoader(Unknown Source)

    at java.lang.System.(Unknown Source)

    at java.lang.System.(Unknown Source)

    at wonka.vm.Init.main(Unknown Source)

Init: no such class as MainClass in class path!

Init: no start class found.  Game over.

Code:
http://192.168.1.250/rcgi.bin/jvmCmd?cmd=start&runCmd=%20-heapsize%205M%20-classpath%20/usr/MQTT_EWONSUPPORT.jar%20-emain%20MainClass

Of course, I double checked the JAR name/path and the main class name. Is it possible, that e.g. a compression algorithm used by the JAR is not supported by the Ewon? Has anybody seen the same issue before? Do I have to enable somethingas one has to enable the FTP server since I think firmware 15?

Firmware is 15.0s2]]> <![CDATA[What is the point of defining pivots on the different different Ewon firmware version]]> https://techforum.ewon.biz/thread-2850.html Tue, 27 Jan 2026 15:43:32 +0000 mickaa]]> https://techforum.ewon.biz/thread-2850.html
What is the point of defining pivots on the different Ewon firmware versions?
Does it allow us to avoid low-level formatting and therefore not have to completely reinstall the system?

https://techforum.ewon.biz/thread-1227.h...24%3DGET+1]]>
What is the point of defining pivots on the different Ewon firmware versions?
Does it allow us to avoid low-level formatting and therefore not have to completely reinstall the system?

https://techforum.ewon.biz/thread-1227.h...24%3DGET+1]]> <![CDATA[Ewon Cosy port forward for SQL Server]]> https://techforum.ewon.biz/thread-2849.html Tue, 27 Jan 2026 10:30:48 +0000 FimoHub]]> https://techforum.ewon.biz/thread-2849.html
I have to reach it through the WAN port of the Ewon (Customer network 172.17.x.x) so I'm trying to configure some Port Forwarding rules following your FAQs/guides.
The connection works correctly if I connect from my PC using eCatcher and SQL Management Studio pointing te DB Server "192.168.X.X\SQLEXPRESS", so it seems that SQL is well configured for network access (Network protocols and so on...).

I'm still not able to reach the SQL Server instance from the WAN port using "172.17.x.x\SQLEXPRESS" address, but it seems that the returned SQL Connection Error change a little depending on the configured rule on the Ewon.
Basically the error says always that is not possible to reach the SQLServer Instance on the network.

Has anyone been able to connect succesfully to SQL Server by using port forwarding?

Here under the current rules/parameters saved inside the Ewon:

ProxyEnabled = 1 to enable proxy rules

ProxyExtItf = 0 (WAN)

ProxyProto1 = 2 (TCP)
ProxySide1 = 1
ProxyPort1 = 1433
ProxySvrPort1 = 1433
ProxySvrIpAddr1 = 192.168.0.100

ProxyProto2 = 1 (UDP)
ProxySide2 = 1
ProxyPort2 = 1434
ProxySvrPort2 = 1434
ProxySvrIpAddr2 = 192.168.0.100

ProxyProto3 = 2 (TCP)
ProxySide3 = 1
ProxyPort3 = 135
ProxySvrPort3 = 135
ProxySvrIpAddr3 = 192.168.0.100

ProxyProto4 = 2 (TCP)
ProxySide4 = 1
ProxyPort4 = 1434
ProxySvrPort4 = 1434
ProxySvrIpAddr4 = 192.168.0.100

WANItfProt = 2

Basically I have configured the most common ports of SQL Server service for network connection: should I add also the same rules for the opposite side (LAN to EXT) or does the ewon automatically manage the port forward in both sides?

Am I missing something (other parameter/rule)?

Thanks in advance for any help or suggestion and have a nice day!]]>
I have to reach it through the WAN port of the Ewon (Customer network 172.17.x.x) so I'm trying to configure some Port Forwarding rules following your FAQs/guides.
The connection works correctly if I connect from my PC using eCatcher and SQL Management Studio pointing te DB Server "192.168.X.X\SQLEXPRESS", so it seems that SQL is well configured for network access (Network protocols and so on...).

I'm still not able to reach the SQL Server instance from the WAN port using "172.17.x.x\SQLEXPRESS" address, but it seems that the returned SQL Connection Error change a little depending on the configured rule on the Ewon.
Basically the error says always that is not possible to reach the SQLServer Instance on the network.

Has anyone been able to connect succesfully to SQL Server by using port forwarding?

Here under the current rules/parameters saved inside the Ewon:

ProxyEnabled = 1 to enable proxy rules

ProxyExtItf = 0 (WAN)

ProxyProto1 = 2 (TCP)
ProxySide1 = 1
ProxyPort1 = 1433
ProxySvrPort1 = 1433
ProxySvrIpAddr1 = 192.168.0.100

ProxyProto2 = 1 (UDP)
ProxySide2 = 1
ProxyPort2 = 1434
ProxySvrPort2 = 1434
ProxySvrIpAddr2 = 192.168.0.100

ProxyProto3 = 2 (TCP)
ProxySide3 = 1
ProxyPort3 = 135
ProxySvrPort3 = 135
ProxySvrIpAddr3 = 192.168.0.100

ProxyProto4 = 2 (TCP)
ProxySide4 = 1
ProxyPort4 = 1434
ProxySvrPort4 = 1434
ProxySvrIpAddr4 = 192.168.0.100

WANItfProt = 2

Basically I have configured the most common ports of SQL Server service for network connection: should I add also the same rules for the opposite side (LAN to EXT) or does the ewon automatically manage the port forward in both sides?

Am I missing something (other parameter/rule)?

Thanks in advance for any help or suggestion and have a nice day!]]>