Post by davidbo on Toradex and CODESYS and licensing ^{CODESYS Forge talk (Post)}
Does it mean that the USB dongle has to be inserted all time in order, for the device running in licensed mode?
Last updated: 2025-10-20

Using a raspberry pi and NVLs to log variables outside of Codesys ^{CODESYS Forge talk (Thread)}
Using a raspberry pi and NVLs to log variables outside of Codesys
Last updated: 2025-11-21

CoDeSys v3.5: creating libraries for both 32-bit and 64-bit controllers ^{CODESYS Forge talk (Thread)}
CoDeSys v3.5: creating libraries for both 32-bit and 64-bit controllers
Last updated: 2025-12-10

Trend legend naming and access/config to/of trend/legend-variables ^{CODESYS Forge talk (Thread)}
Trend legend naming and access/config to/of trend/legend-variables
Last updated: 2025-12-22

UC20-M4000 Redundancy – Application is not automatically synchronized and redundancy breaks after online change ^{CODESYS Forge talk (Thread)}
UC20-M4000 Redundancy – Application is not automatically synchronized and redundancy breaks after online change
Last updated: 2026-03-16

Blocking UDP ports 1740–1743 and 22350 to disable CODESYS network scan (startup + device discovery) ^{CODESYS Forge talk (Thread)}
Blocking UDP ports 1740–1743 and 22350 to disable CODESYS network scan (startup + device discovery)
Last updated: 2026-03-31

Mismatch between coordinate monitor and actual motion using SMC_GroupJog2, MC_MoveLinearAbsolute (6DOF) ^{CODESYS Forge talk (Thread)}
Mismatch between coordinate monitor and actual motion using SMC_GroupJog2, MC_MoveLinearAbsolute (6DOF)
Last updated: 2026-04-07

Question about Demo License limitations for Modbus TCP communication and Fieldbus Instances ^{CODESYS Forge talk (Thread)}
Question about Demo License limitations for Modbus TCP communication and Fieldbus Instances
Last updated: 2026-02-28

Codesys Trend - setting Y axis minimum and maximum as variables - error ^{CODESYS Forge talk (Thread)}
Codesys Trend - setting Y axis minimum and maximum as variables - error
Last updated: 2026-03-22

Codesys Trend - setting Y axis minimum and maximum as variables - error ^{CODESYS Forge talk (Thread)}
Codesys Trend - setting Y axis minimum and maximum as variables - error
Last updated: 2026-03-22

_NEW when used with classes and interfaces. Interface shows "Hidden Instance" in watch. ^{CODESYS Forge talk (Thread)}
_NEW when used with classes and interfaces. Interface shows "Hidden Instance" in watch.
Last updated: 2026-03-24

Post by gustavocsw on MQTT memory leak problem ^{CODESYS Forge talk (Post)}
Hello everyone, I'm using the IoT Library to implement the MQTT communication with my local broker server in order to publish and subscribe at specifics topics to share and consume information about my application. But, it seems that are occurring some memory leak problem in a "high" frequency (more than 10 Hz) subscribe process. I follow the same method as in IoT Lib exemples, and at first looks perfect but my PLC was rebooting frequently and when I check its memory usage that was increasing as fast as the subscribe massage was sent. I'm using a WEG PLC410 and a WEG PLC500, and this error occurred in both of them (including in CODESYS Control Win x64). The application sends to the system a message JSON with the float payload Ex. {"data" : 0.8500}, but this happens with a INT, or BOL as well. I use the follow code in my application to find the value: //FindFirstValueByKey VARs PROGRAM JSON_VELO VAR //------Setting the JSON Subscriber to Set the Relay Value jsonDataVelo : JSON.JSONData; jsonByteArrayReaderVelo : JSON.JSONByteArrayReader; xST1okVelo : BOOL; FindFirstValueByKeyVelo : JSON.FindFirstValueByKey; jsonElementVelo : JSON.JSONElement; xDoneReaderVelo : BOOL; xDoneFindVelo : BOOL; //STRING and WSTRING for Subscribe the massage sPayloadJsonVelo : STRING := 'opa'; psPayloadJsonVelo : POINTER TO BYTE := ADR(sPayloadJsonVelo); //wsPayloadJsonRelaySet : WSTRING := "opa"; wsPayloadJsonVelo : WSTRING := STRING_TO_WSTRING('opa'); pwsPayloadJsonVelo : POINTER TO WORD := ADR(wsPayloadJsonVelo); lrVelo : LREAL; xKeepAliveVelo : BOOL; xSetVelo : BOOL; RSSet : RS; LIMPAR : STRING; //Find the msg end sFindVelo : STRING := '}'; psFindVelo : POINTER TO STRING := ADR(sFindVelo); iLenVelo : INT; iSizeVelo : INT := 12; udiContMsg : UDINT; END_VAR // FindFirstValueByKey CODE // Relay Set configuration xSetVelo := MQTT_SUBSCRIBER.RSVelo.Q1; IF xSetVelo THEN xKeepAliveVelo := TRUE; END_IF IF xKeepAliveVelo THEN udiContMsg := udiContMsg + 1; iLenVelo := TO_INT(StrLenA(psPayloadJsonVelo)); iSizeVelo := iLenVelo - TO_INT(MQTT_SUBSCRIBER.udiPayloadSizeVelo); StrDeleteA(psPayloadJsonVelo,iSizeVelo,iLenVelo); wsPayloadJsonVelo := STRING_TO_WSTRING(sPayloadJsonVelo); pwsPayloadJsonVelo := ADR(wsPayloadJsonVelo); //MQTT.ConvertUTF8toUTF16(sourceStart:= ADR(sPayloadJsonVelo), targetStart:= ADR(wsPayloadJsonVelo), dwTargetBufferSize:= TAM, bStrictConversion:= 1); //Reset jsonByteArrayReader jsonByteArrayReaderVelo ( xExecute := TRUE, pwData := pwsPayloadJsonVelo, jsonData := jsonDataVelo, xDone => xDoneReaderVelo ); FindFirstValueByKeyVelo( xExecute := xDoneReaderVelo, wsKey := "data", diStartIndex:= 0, jsonData := jsonDataVelo, jsonElement => jsonElementVelo, xDone => xDoneFindVelo ); IF xDoneFindVelo THEN lrVelo := jsonElementVelo.value.lrValue; //Reset jsonByteArrayReader jsonByteArrayReaderVelo ( xExecute := FALSE, pwData := pwsPayloadJsonVelo, jsonData := jsonDataVelo, xDone => xDoneReaderVelo ); FindFirstValueByKeyVelo( xExecute := FALSE, wsKey := "data", diStartIndex:= 1, jsonData := jsonDataVelo, jsonElement => jsonElementVelo, xDone => xDoneFindVelo ); xKeepAliveVelo := FALSE; GVL.xSetVeloRead := TRUE; END_IF END_IF And this to subscribe at the topic: //SUBSCRIBE VAR: //----------------- Subscribe Velocity ----------------------- MQTTSubscribeVelo : MQTT.MQTTSubscribe;//Variable MQTTSubscriber block -X - function-X wsTopicSubscribeVelo : WSTRING(1024) := "CORE/odometry/GET/data/simp"; // Topic to publish a message sSubscribeMassageVelo : STRING; udiPayloadSizeVelo : UDINT; xSDoneVelo : BOOL; xSErrorVelo : BOOL; xReceiveVelo : BOOL; eSTypeVelo : MQTT.MQTT_ERROR; eSMQTTErrorVelo : MQTT.MQTT_ERROR; RSVelo : RS; udiCont : UDINT; //SUBSCRIBE CODE: MQTTSubscribeVelo( xEnable:= MQTT_CLIENT.xConnection_Broker AND NOT xSErrorVelo AND NOT JSON_VELO.xKeepAliveVelo, pbPayload:= JSON_VELO.psPayloadJsonVelo, udiMaxPayloadSize:= SIZEOF(JSON_VELO.sPayloadJsonVelo), udiPayloadSize => udiPayloadSizeVelo, mqttClient:= MQTT_CLIENT.ClientMQTT, wsTopicFilter:=wsTopicSubscribeVelo, xDone => xSDoneVelo, xError=> xSErrorVelo, xReceived => xReceiveVelo, eMQTTError=> eSMQTTErrorVelo ); RSVelo(SET := xReceiveVelo, RESET1 := JSON_VELO.xKeepAliveVelo);
Last updated: 2024-09-09

Post by jonasz on Device diagnosis ( EtherCAT IO card ) ^{CODESYS Forge talk (Post)}
Hi, I'll link to the topic not wanting to start a new one. In the application I am building, I wanted to use the diagnostics described in the CAA Device Diagnosis library. In principle, everything is ok, except for the elements related to ModbusTCP. Despite the fact that ModbusTCP is taken into account in the documentation, it is not recognised via the interfaces. FUNCTION_BLOCK NET_HW_DIAG VAR_INPUT END_VAR VAR_OUTPUT END_VAR VAR (* Referencja do struktury z danymi dla HMI ASTRAADA.*) Visu: REFERENCE TO VISU; (* Wskaźnik na mastera EtherCAT.*) pEtherCATMaster : POINTER TO IoDrvEtherCAT; (* Wskaźnik na slave EtherCAT.*) pEtherCATSlave : POINTER TO EtcSlave; (* Interfejs dla węzła w drzewie urządzeń.*) _itfNode: DED.INode; (* Ogólny interfejs magistrali. Zapewnia podstawowe informacje o magistrali polowej.*) _itfBus: DED.IBus; (* Interfejs urządzenia. Zapewnia rozszerzone informacje o urządzeniu (magistralowym).*) _itfDevice2: DED.IDevice2; (* Ogólny interfejs magistrali. Zapewnia podstawowe informacje o magistrali polowej.*) _itfStack: DED.IStack; (* Numer węzła w drzewie urządzeń.*) uiNodes: UINT; (* Operator jest rozszerzeniem normy IEC 61131-3. W czasie wykonywania operator wykonuje konwersję typu odwołania do interfejsu na inny typ. Operator zwraca wynik BOOL. Wartość TRUE oznacza, że CODESYS pomyślnie wykonał konwersję. *) xQueryResultBus: BOOL; xQueryResultDevice2: BOOL; xQueryResultStack: BOOL; (* Struktura danych dotyczących węzłów w drzewie urządzeń.*) NetHwDiag: NW_HW_STAT; ModbusTcpClientDeviceInfo: IoDrvModbusTCP.DED.DEVICE_INFO; ModbusTcpClientDeviceState: IoDrvModbusTCP.DED.DEVICE_STATE; ModbusTcpDeviceInfo: IoDrvModbusTCP.DED.DEVICE_INFO; ModbusTcpDeviceState: IoDrvModbusTCP.DED.DEVICE_STATE; END_VAR (* Pobranie wskaźników dla pierwszego mastera i pierwszego slave w sieci EtherCAT.*) pEtherCATMaster := g_pFirstMaster; pEtherCATSlave := pEtherCATMaster^.FirstSlave; (* Diagnostyka sieci EtherCAT.*) pEtherCATMaster := g_pFirstMaster; pEtherCATSlave := pEtherCATMaster^.FirstSlave; NetHwDiag.xConfigFinished := pEtherCATMaster^.xConfigFinished; NetHwDiag.xDistributedClockInSync := pEtherCATMaster^.xDistributedClockInSync; NetHwDiag.xError := pEtherCATMaster^.xError; NetHwDiag.xSyncInWindow := pEtherCATMaster^.xSyncInWindow; NetHwDiag.sLastMessage := pEtherCATMaster^.LastMessage; NetHwDiag.LastError := pEtherCATMaster^.LastError; (* Diagnostyka drzewa urządzeń.*) uiNodes := 0; _itfNode := DED.GetRoot(); REPEAT NetHwDiag.asDeviceName[uiNodes] := DED.GetDeviceNameString(itfNode := _itfNode); xQueryResultBus := __QUERYINTERFACE(_itfNode,_itfBus); IF xQueryResultBus THEN _itfBus.GetBusInfo(buiInfo := NetHwDiag.aBusInfo[uiNodes]); NetHwDiag.aBusState[uiNodes] := _itfBus.GetBusState(); END_IF xQueryResultDevice2 := __QUERYINTERFACE(_itfNode,_itfDevice2); IF xQueryResultDevice2 THEN _itfDevice2.GetDeviceInfo(deiInfo := NetHwDiag.aDeviceInfo[uiNodes]); NetHwDiag.aDeviceState[uiNodes] := _itfDevice2.GetDeviceState(); IF pEtherCATSlave <>0 THEN pEtherCATSlave^(); IF pEtherCATSlave^.SlaveAddr = NetHwDiag.aDeviceInfo[uiNodes].idSystem THEN NetHwDiag.aAlStatus[uiNodes] := pEtherCATSlave^.ALStatus; pEtherCATSlave := pEtherCATSlave^.NextInstance; END_IF END_IF ELSE xQueryResultStack := __QUERYINTERFACE(_itfNode,_itfStack); IF xQueryResultStack THEN _itfStack.GetDeviceInfo(deiInfo := NetHwDiag.aDeviceInfo[uiNodes]); NetHwDiag.aDeviceState[uiNodes] := _itfStack.GetDeviceState(); END_IF END_IF uiNodes := uiNodes + 1; _itfNode := DED.GetNextNode(_itfNode); UNTIL _itfNode = 0 END_REPEAT (* Diagnostyka Modbus.*) Modbus_TCP_Client.GetDeviceInfo(deiInfo := ModbusTcpClientDeviceInfo); ModbusTcpClientDeviceState := Modbus_TCP_Client.GetDeviceState(); PAC_3200T.GetDeviceInfo(deiInfo := ModbusTcpDeviceInfo); ModbusTcpDeviceState := PAC_3200T.GetDeviceState(); Of course, you can take the easy way out and refer directly to the devices, but I wanted a reusable component. Any constructive help is very welcome Best regards Jonasz
Last updated: 2025-07-15

Post by chirag on About byte swap and convert into 16 bits ^{CODESYS Forge talk (Post)}
Hello, I have %QB0 8 high bits and %QB1 8 low bits . How can i swap bits %QB0 and %QB1 for requirment positions in a 16-bit value ? after that i need %QB0 and %QB1 in to 16bits . For that, i need help. Please see attached pictures for your reference. Thanks in advance.
Last updated: 2023-12-04

Post by hassaank on CODESYS V3+ WAGO PFC200+ MODBUS RTU ^{CODESYS Forge talk (Post)}
Hi everyone, I’m new to CODESYS and Wago devices, and I’m trying to set up Modbus RTU communication. I have a Wago PFC200 (8110) and a 750-653 RS485 module, and I want to read data from an energy meter using Modbus RTU. Thanks in advance for your help!
Last updated: 2025-03-17

Post by glutenaron on Safety drive EL6900 and mitsubishi ^{CODESYS Forge talk (Post)}
Last updated: 2025-05-20

Post by giackanto on Eoe issues with Windows and Linux ^{CODESYS Forge talk (Post)}
Last updated: 2023-12-20

Post by giackanto on Eoe issues with Windows and Linux ^{CODESYS Forge talk (Post)}
Last updated: 2023-12-20

Post by anderson on function block output ^{CODESYS Forge talk (Post)}
so it is not possible for me to use the function blocks and through them I can select the digital outputs of the PLC so that pulses and direction are output, or some function block that does this reading and in it I can program the pulse and direction outputs for the drive?
Last updated: 2024-01-09

Post by scarter on Import/Export PLCOpen xml Task Configuration ^{CODESYS Forge talk (Post)}
I'm Having the same issue. If I highlight PLC Logic and import it erases everything else and replaces the Task config. If I highlight the Application I get the same result. Simple manual fix is click and drag the task config onto the origional Application, and delete the second one. Easy fix but not the expected result of importing task config.
Last updated: 2024-01-17

Post by rmaas on Direct Pointers in IOMapping for EtherCAT with IoDrvEthercatLib.ETCSlave_Dia ^{CODESYS Forge talk (Post)}
Hi, Im not sure if this is what you mean, but i do succesfully use the IoDrvEthercatLib.ETCSlave.InputData and IoDrvEthercatLib.ETCSlave.OutputData to read from and write to beckhoff DI and DO cards. Very convenient as you can make an FB with an VAR_IN_OUT of type IoDrvEthercatLib.ETCSlave and only have to pass the slave reference... So i am not using .ETCSlave_Diag but .ETCSlave...
Last updated: 2024-02-13

Post by markus-huber on CodeSys SVN doesn't work ^{CODESYS Forge talk (Post)}
I installed CodeSys V3.5 SP9 for HY-eVision2 1.18.0.0 and activated the License Keys for SVN and noticed that the "SVN" doesn't pop up when i go on Menu - Project. For some reason the SVN works on CodeSys SP10. I already deinstalled all CodeSys Applications and installed them again but it's the same. Maybe the problem already occurred and someone could help me.
Last updated: 2024-02-20

Post by matthew on Persistence Manager Backup ^{CODESYS Forge talk (Post)}
Hi @eschwellinger yes I have been using xDoubleStorage It happened again and I checked and the files were still there with there contents, restarting codesys or rebooting would not even reload them. Doing a download and then starting the PLC loaded them and began working again. Some sort of mismatch error or something?
Last updated: 2024-05-14

Post by mozed on Windows 11 and SP17 ^{CODESYS Forge talk (Post)}
Last updated: 2024-06-12

Post by kuegerls on SysProcessExecuteCommand2 and CANopen Device ^{CODESYS Forge talk (Post)}
4.10.0.0
Last updated: 2024-06-24

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