Search talk: Object reference not set to an instance of an object

 
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Any Example for the usage of IIoT Library for Raspberry Pi? CODESYS Forge talk (Thread)
Any Example for the usage of IIoT Library for Raspberry Pi?
Last updated: 2020-11-05

Smooth fade-in and fade-out of menus based on CSS3 animations CODESYS Forge talk (Thread)
Smooth fade-in and fade-out of menus based on CSS3 animations
Last updated: 2020-01-28

SM3_Robotics, time and distance remaining until the end of a group motion. CODESYS Forge talk (Thread)
SM3_Robotics, time and distance remaining until the end of a group motion.
Last updated: 2021-07-09

Error 3803: (2): Out of data global memory. Variable 'CAN1_CANREMOTE_INFO'. 5904 bytes. CODESYS Forge talk (Thread)
Error 3803: (2): Out of data global memory. Variable 'CAN1_CANREMOTE_INFO'. 5904 bytes.
Last updated: 2019-09-06

Can a program know the text names of the objects in the devices tree? CODESYS Forge talk (Thread)
Can a program know the text names of the objects in the devices tree?
Last updated: 2018-07-05

Cold reset / exchange of data between applciation on one PLC CODESYS Forge talk (Thread)
Cold reset / exchange of data between applciation on one PLC
Last updated: 2016-04-16

PFC200 unresponsive with loads of messages in /var/log/wago/wagolog.log CODESYS Forge talk (Thread)
PFC200 unresponsive with loads of messages in /var/log/wago/wagolog.log
Last updated: 2022-04-14

Codesys for linux SL AMD64 and last update of UBUNTU 22.04 CODESYS Forge talk (Thread)
Codesys for linux SL AMD64 and last update of UBUNTU 22.04
Last updated: 2023-02-06

Change color of the control on some condition in online mode CODESYS Forge talk (Thread)
Change color of the control on some condition in online mode
Last updated: 2007-06-11

What is the equivalent in codesys of Modbus M flag? CODESYS Forge talk (Thread)
What is the equivalent in codesys of Modbus M flag?
Last updated: 2011-12-02

Out of Retain Memory with IFM CR1201 with CodeSys V3.5 SP8 CODESYS Forge talk (Thread)
Out of Retain Memory with IFM CR1201 with CodeSys V3.5 SP8
Last updated: 2016-06-02

Codesys OPC DA server requires more then 2 GB of ram CODESYS Forge talk (Thread)
Codesys OPC DA server requires more then 2 GB of ram
Last updated: 2024-01-25

OPC UA Server Stops after 5 consecutive disconnections of ethernet port CODESYS Forge talk (Thread)
OPC UA Server Stops after 5 consecutive disconnections of ethernet port
Last updated: 2024-02-13

Error: C0138: No matching 'FB_Init' method found for instantiation of VisuClientObjectMgr CODESYS Forge talk (Thread)
Error: C0138: No matching 'FB_Init' method found for instantiation of VisuClientObjectMgr
Last updated: 2025-11-28

Error: C0138: No matching 'FB_Init' method found for instantiation of VisuClientObjectMgr CODESYS Forge talk (Thread)
Error: C0138: No matching 'FB_Init' method found for instantiation of VisuClientObjectMgr
Last updated: 2025-11-28

Post by eschwellinger on Scara3 kinematic robot error CODESYS Forge talk (Post)
Please check the jitter in the online taskmonitoring. cylce time of the motion task and jitter in case of the error.
Last updated: 2025-12-29

Port instantiation of serial interface in WAGO PLC using Modb_L05.lib in CoDeSys v2.3 CODESYS Forge talk (Thread)
Port instantiation of serial interface in WAGO PLC using Modb_L05.lib in CoDeSys v2.3
Last updated: 1 day ago

Post by yueqiqi on Where Can I download the latest Version of CoDeSys V CODESYS Forge talk (Post)
Where Can I download the latest Version of CoDeSys V2.3?
Last updated: 2026-06-15

Where Can I download the latest Version of CoDeSys V CODESYS Forge talk (Thread)
Where Can I download the latest Version of CoDeSys V
Last updated: 2026-06-15

Post by abrarsk on SysCom Library Usage CODESYS Forge talk (Post)
Hello all, I am facing issues with using SysCom library. With SysCom23 library things were simple but since we are migrating to 64bit systems, I am writing a Porting program. With SysCom23, opening the comport was as simple as providing the ComPort no. which returns the Handle as a DWORD. dwHandle:=SysComOpen(Port); But the new library is a bit different. It is asking for 2 input parameters to open the Com Port - Port Number and POINTER to RTS_IEC_RESULT IF hCom = 0 THEN hCom := SysComOpen(ComSettings.sPort, ADR(pResult)); How should I use the RTS_IEC_Result? I can find RTS_IEC-REUSLT under SysType2Interfaces of SysCom library. Also, can someone give me a general understanding of this RTS_IEC_REULT and RTS_IEC_HANDLE, etc.?
Last updated: 2024-08-05

Post by pernockham on Linking to IO during runtime with hot swap? CODESYS Forge talk (Post)
I have a project where a single PLC shall control multiple nodes (up to 10 units?) with IO connected through profinet. Ideally each node should be identical however with time I see situations were different setups/configurations will be used. Codesys PLC (GVLs) |Profinet | |--PNIO-node-1--| | | AIO, | | DIO, | | CNT etc. | |--PNIO-node-2--| | | AIO, | | DIO, | | CNT etc. Ideally I think of a configuration through yaml/xml-files (the assignment/linking of the profinet nodes towards GVL-variables in the PLC as well as scaling, channel configration etc.). Would be grateful if someone could suggest library/-ies that can handle the following: - Verify what IO is connected to a device/node. - Hot-swap/assign link for IO towards GVLs, either automatically or through a HMI.
Last updated: 2024-10-11

Post by dhumphries on Toggling Visualizations using HMI Physical Buttons CODESYS Forge talk (Post)
Nothing wrong with ladder, in a lot of applications it is simpler than ST or CFC, you're a lot less likely to have syntax issues in a ladder diagram than in structured text as long as you stick with traditional ladder elements. Your attempt was almost valid, but you tried to change the currentvisu variable using a blend of structured text and ladder, which isn't allowed. You need to use the MOVE operator and define the visualization name as a string on the input side and the visuelems.currentvisu as the target on the output side.
Last updated: 2024-02-28

Post by eschwellinger on Code Size CODESYS Forge talk (Post)
will start with next relaese on RTE, at the moment not possible.
Last updated: 2023-09-08

Post by eschwellinger on SPI Master not running/MCP3008 Missing driver. CODESYS Forge talk (Post)
SPI enabled on 'sudo raspi-config' reduce _diMaxSpeed
Last updated: 2023-09-12

Post by spareparts on SPI Master not running/MCP3008 Missing driver. CODESYS Forge talk (Post)
Up and running thank you.
Last updated: 2023-09-13

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