Post by antonz on OSCAT Scale_r function not working in LD 4.60 works in LAD2 on 3.5.21sp3 ^{CODESYS Forge talk (Post)}
That's what I found as well Shaun. I have seen it at least in versions 3.5.21.1 and 3.5.21.3. There seems to be an issue with the FBD/LD package v4.6.0.0. The workaround proposed by Tim works but needs to be done manually on every code change/addition. For now we manually downgrade the FBD/LD package from v4.6.0.0 down to v4.5.0.0 after installation of CoDeSys. Same as you did. I hope this gets fixed on a next patch.
Last updated: 2025-11-21

Post by farren on Codesys complains about matching versions ^{CODESYS Forge talk (Post)}
I'm building up a 2nd PC to match an existing developer PC. Installed the same SP and Patch levels but when I open a project that was created on the existing PC, Codesys complains that it's not the same version. Attaching a screenshot..... What else is there to match? Also, can all of the libraries that are on the existing machine be copied from it to the new machine and if so, how? (So I get the same versions) Which files/folders do I copy? Thanks! -Farren
Last updated: 2025-12-14

Post by mohi on Connect to Azure IoT Hub ^{CODESYS Forge talk (Post)}
Hello, I try to connect a Controller to Azure IoT Hub using a Root Certificate put on the controller in /etc/ssl/certs und SAS Token for IoT Hub instead of X.509 certificates. The TLS Handshake is successful when I test in terminal using openssl. It seems that the Controller doesn't start this process. I use the Azure IoT Hub library and the Net Base Services. Is there something left or something you can recommend? Best regards Mo
Last updated: 2026-04-24

Post by mohi on Connect to Azure IoT Hub ^{CODESYS Forge talk (Post)}
Hello, I try to connect a Controller to Azure IoT Hub using a Root Certificate put on the controller in /etc/ssl/certs und SAS Token for IoT Hub instead of X.509 certificates. The TLS Handshake is successful when I test in terminal using openssl. It seems that the Controller doesn't start this process. I use the Azure IoT Hub library and the Net Base Services. Is there something left or something you can recommend? Best regards Mo
Last updated: 2026-04-24

Post by codegunner on how to convert library from CodeSys 2.3 to CodeSys 3.x ? ^{CODESYS Forge talk (Post)}
hello, ive tried everything and keep getting error like i have opened a file in read only so cannot save no idea what is causing it, file is not read only i cannot even open a new file i make with one variable in 2.3, get same error for read only. do you have a 2.3 file you can send me tomtry and open for a test? thanks
Last updated: 4 days ago

Post by risele on dynamic modbus devices ^{CODESYS Forge talk (Post)}
Have the same issue: I'm making a test setup for modbus devices testing and calibration. One is run for every possible address, and it starts with minimal request: if the device is found, it continue to work with it, otherwise it's set to Disabled temporary. Those state machines are running under FOR cycle, and disabled are just skipped. Every instance have its own timer for not running too frequently and a start delay, so the actual requests are separate in time. I also check not for a single error, but have some timer to allow one-two timeouts. The small program disables and re-enables devices temporary (manually, since i could not iterate over MB devices). VAR Reset:ARRAY[1..GVL_MB.MD_COUNT] OF R_TRIG; i:INT; END_VAR {IF hasconstantvalue(GVL_MB.MD_COUNT, 1, >= )} i:=1; MD_1.Enable:=GVL_MB.MDPortsEnable[i]; Reset[i](CLK:=GVL_MB.MDPortsEnable[i]); MD_1.xReset:=Reset[i].Q; {END_IF} {IF hasconstantvalue(GVL_MB.MD_COUNT, 2, >= )} i:=2; MD_2.Enable:=GVL_MB.MDPortsEnable[i]; Reset[i](CLK:=GVL_MB.MDPortsEnable[i]); MD_2.xReset:=Reset[i].Q; {END_IF} There is also program to re-enable devices periodically. METHOD ScanBus VAR_INPUT END_VAR VAR j:INT; (*block auto scanning if calibration is running for any device since it's data-reach process that should not be interrupted with modbus timeouts *) CalibrationBusy:BOOL:=FALSE; END_VAR CalibrationBusy:=FALSE; FOR j:=1 TO GVL_MB.MD_COUNT DO CalibrationBusy:=CalibrationBusy OR MD_Calibrate.AutoTesters[j].xBusy; END_FOR; IF CalibrationBusy THEN RETURN; END_IF tBusScanSchedule(IN:=(NOT tBusScanSchedule.Q), PT:=tBusScanPeriod); IF (NOT tBusScanDelayer.Q) AND (tBusScanSchedule.Q OR (NOT xFirstScanPerforemed)) THEN xBusScanBusy:=TRUE; MissingCounter:=0; xFirstScanPerforemed:=TRUE; FOR j:=1 TO GVL_MB.MD_COUNT DO (* MD_Calibrate is main calibration program. Identifiers - is array of State machines mentioned above Phase_Faulted is a state of Identifiers where I'm sure device is missing on the bus *) IF MD_Calibrate.Identifiers[j].state=eStateMDIdentifier.Phase_Faulted THEN MD_Calibrate.Identifiers[j].Rescan(); MissingCounter:=MissingCounter+1; END_IF END_FOR END_IF tBusScanPauser(IN:=tBusScanDelayer.Q AND (MissingCounter>0),PT:=tBusScanDelay*MissingCounter); xBusScanBusy:=tBusScanPauser.Q; xFirstScanPerforemed:=xFirstScanPerforemed OR tBusScanPauser.ET>=tBusScanPauser.PT; Also the GUI have buttons for each address possible that re-enables the device if required.
Last updated: 2026-02-13

Post by nehaltrivedi96 on Modbus connection via Qronox PCD3 M6893 ^{CODESYS Forge talk (Post)}
Hello, I am currently scaling 4-20mA signals and the scaled output (temperature) has to be sent via modbus protocol to a tool like doctor modbus or modbus poll. I have defined my inputs as real as and the output is also real, but to send this output via modbus it has to be of word. So how will i convert real into word and then send the generated output via modbus?
Last updated: 2026-02-18

Post by confre on Combo box drop-down invisible ^{CODESYS Forge talk (Post)}
Hi, I created a combo box and I need to know when the drop‑down menu is open, in order to avoid hiding the combo box while the drop‑down is visible. Alternatively, if it’s not possible to detect whether the drop‑down is open, I would like to know how to close or hide the drop‑down programmatically when the combo box is made invisible. I'm using Codesys 3.5 SP19 on IFM CR1074 without touch screen (with standard keyboard handling) Thanks.
Last updated: 2026-04-09

Post by kreisfilho on Same program to more than one PLC ^{CODESYS Forge talk (Post)}
Hi, How can I assign a monitor (non touch) connected to a Raspberry pi (via HDMI) as visualization output?
Last updated: 2023-08-23

Post by janderson on OPC UA Server limitations, large array crashes runtime ^{CODESYS Forge talk (Post)}
What are the limitations of the OPC UA Server? I am trying to get data off my PLC that is acquired at high rates (~50k samples/s) so I am storing them in arrays and trying to get the arrays off the PLC. When I attempt to read a ~200k element array through OPC UA the server and runtime crashes (requiring tools -> update linux arm64 -> start runtime). Is there a better way to get highspeed data off? The ACDatalog library seems a bit irritating to use so I would prefer to go through OPC UA.
Last updated: 2023-08-23

Post by smercante on Unable to Import PLC Open XML from Easy Remote IO ^{CODESYS Forge talk (Post)}
Hello dear. I have the same problem. Could you solve it? Do you use GLV variables?
Last updated: 2023-08-24

Post by i-campbell on Ping By Name ^{CODESYS Forge talk (Post)}
https://content.helpme-codesys.com/en/libs/Net%20Base%20Services/3.5.19.20/NetBaseServices/Function-Blocks/IP/fld-IP.html resolve hostname and ping?
Last updated: 2023-08-24

Post by damian177 on PFC 200 - codesys V3.5 ^{CODESYS Forge talk (Post)}
Hi, Is it possible read all project from Codesys PFC200 ? I know only IP addres, nothing more
Last updated: 2023-08-25

Post by jegerjon on Same program to more than one PLC ^{CODESYS Forge talk (Post)}
I guess you could archive the project, open the archive and go online. Is that suffiecient for your use case?
Last updated: 2023-08-25

Post by gregor on PFC 200 - codesys V3.5 ^{CODESYS Forge talk (Post)}
As far as I know, only if someone downloaded sourcecode to the PLC.
Last updated: 2023-08-25

Post by rossanoparis on How to configure CODESYSControl_User.cfg in order to use a specific network card for OPCUA Server ^{CODESYS Forge talk (Post)}
Hello at all I'd like to know how to configure CODESYSControl_User.cfg in order to use a specific network card for OPCUA Server. In the past, I tried to ask in "Forge" about this topic, but I could find neither help nor document informations about it. Reading the file "codesyscontrol.log" I see these logs OPC UA Server Started: Hostname: NTLRPICTRL01, Port: 4840 URL: opc.tcp://NTLRPICTRL01:4840 Loopbackadapter activated. **All available networkadapters are used.** Multithreading activated. 3 workers used. My controller, which is a Linux PC, has got two network cards eth0 and eth1 I whant to use the card with name "eth0" as a server for OPCUA and keep the "eth1" free for other stuffs. Is it possible ? Best regards Rossano
Last updated: 2023-08-25

Post by i-campbell on Ping By Name ^{CODESYS Forge talk (Post)}
What library is that? Net Base Services Is there a version 9.2 ? I've not heard of a version 9.2
Last updated: 2023-08-25

Post by eschwellinger on v3.5 SP19 - Modbus TCP Devices - Channel Limit? ^{CODESYS Forge talk (Post)}
think this will be solved with 4.3.0.0 version.- sorry i was wrong with this..4.4.0.0
Last updated: 2023-08-28

Post by eschwellinger on Project compiling error in Simulation mode ^{CODESYS Forge talk (Post)}
I fear you need to update if you need a solution for this.
Last updated: 2023-09-08

Post by danwoodlock on RPI zero W - cant install edge gateway ^{CODESYS Forge talk (Post)}
I see now this is the wrong section. Please close this thread, and I'll repost in the runtime section.
Last updated: 2023-09-13

Post by transmin01 on Correct CAN Driver for EL6751 ^{CODESYS Forge talk (Post)}
@eschwellinger Windows based for this one, but I will need the Linux one also. Regards Trevor.
Last updated: 2023-09-20

Post by lepewe4ka on Sysmac Studio to Codesys ^{CODESYS Forge talk (Post)}
Could you send me an example? I would like to generate a data structure using XML files.
Last updated: 2023-09-20

Post by lepewe4ka on Sysmac Studio to Codesys ^{CODESYS Forge talk (Post)}
Could you send me an example? I would like to generate a data structure using XML files.
Last updated: 2023-09-20

Post by snhatton on Integer with comma in visualization ^{CODESYS Forge talk (Post)}
Here is some information about formatting different variables types: https://content.helpme-codesys.com/en/CODESYS%20Visualization/_visu_placeholder_with_formatting_sequence_in_a_string.html I hope this helps!
Last updated: 2023-09-20

Post by ggarcia94 on CANOPEN SDO configuration ^{CODESYS Forge talk (Post)}
Hello, I´m connected to two drives via CANOPEN. The connection seems to be ok. However, I´m not able to get the PDOs to work even tho they are configured as in the manual of the drives. Looking at the SDOs I´ve seen that for each PDO there is a "Disable PDO" SDO that does not exist in the manual or in the EDS file of the drives. This "Disable PDO" signal has the same Index and Subindex as another SDO used to set and enable the COB-ID of the PDO. I´m assuming this is normal but why is Codesys creating a "Disable PDO" SDO for each PDO and could that be the reason the PDOs are not working?
Last updated: 2023-09-25

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