Post by thysonfury on OPTO22 Groov Epic PR2 Modbus Comms Dropping out every 2 hours and 4 Mins ^{CODESYS Forge talk (Post)}
Hi after some assistance with an error on a Groov PR2 PLC. We have a few different communications set up as shown below: One Modbus TCP Slave Connection - ( Sending / Receiving Data from a PC ) Two Modbus TCP Master Connection - ( Reading Data from a UPS Panel and Reading Data Gas Chromatograph) One Modbus RTU Slave Connection 485 - (Reading Data from a fire and gas panel) One Modbus RTU Master Connection 485 - (Sending Data to a Telemetry Unit) All Licenses have been installed as per OPTO22 suggestions of the order below: Modbus TCP Master Modbus TCP Slave Modbus RTU Master Modbus RTU Slave When I check on License manager the RTU Master license seems to disappear on installing the RTU. (What ever reason I’ve been told this is “normal”). If I use Device License Read It will successfully read all the licenses correctly. Now the issue is every 2 hours and between 4. For what ever reason the communications seems to end and lock up for about 20 seconds. During this time even if I was logged into the PLC it would kick me off and I’d have to re type the password to enter. Most of the devices can handle this however the RTU flags up a communications failure at the SCADA and is raising alarms every 2 hours and 4 mins. We’ve had multiple people go through the code to check for anything obvious. Does anyone have any ideas?
Last updated: 2024-04-15

Post by totorovic on Project loses 'Download time' information ^{CODESYS Forge talk (Post)}
I'm still having issue with this. I have the same code between my IDE and the runtime but I cannot connect because there is no download time indicated on the IDE side. Please Codesys how to solve this ?
Last updated: 2024-12-03

Post by totorovic on Project loses 'Download time' information ^{CODESYS Forge talk (Post)}
Hello, Codesys team, please can I have an explanation? It's frustrating and complicated on production machines to have to reload the entire program even though it's identical, just because of this missing information. How the information 'Download time' is saved?
Last updated: 2024-12-11

Post by totorovic on Project loses 'Download time' information ^{CODESYS Forge talk (Post)}
Hi, I have a Combivis studio 6 licence. What I need is information from Codesys about how the information 'Download time' is saved and if it is possible to modify it manually.
Last updated: 2025-02-10

Post by dim54 on multiple entry of the Owner password ^{CODESYS Forge talk (Post)}
I have to enter the owner password from time to time, even though I haven't closed the project yet. Is there a way to disable this option? So I only have to enter it once when I log in to the project, and that's it.
Last updated: 2025-10-10

Post by tobse on Raspberry Pi 4 with Legacy Drivers and Codesys 3.5.19 Patch 4 ^{CODESYS Forge talk (Post)}
I have the same problem. How can I get the library version 4.14. Is there a download link? I am working with Codesys for the first time in a long time.
Last updated: 2024-02-24

Post by baotthitawat on Cloud SCADA for Industrial Energy Monitoring ^{CODESYS Forge talk (Post)}
Recently I’ve been exploring ATSCADA iEnergy Tools for SCADA-based energy monitoring systems. One thing I find interesting is how modern SCADA platforms are evolving beyond traditional machine monitoring. Many industrial systems are now using Cloud SCADA architectures for centralized energy management, remote dashboards, and operational analytics. ATSCADA iEnergy Tools supports: Real-time energy monitoring Historical data logging MySQL integration Reporting and Excel export Remote SCADA dashboards Cloud-based monitoring systems I think this type of solution is practical for factories, power monitoring applications, building management systems, and other industrial automation projects where energy optimization is becoming increasingly important. Industrial automation is clearly moving toward web-based and cloud-connected SCADA platforms, especially as more facilities focus on digital transformation and smarter energy management
Last updated: 2026-05-26

Post by baotthitawat on Cloud SCADA for Industrial Energy Monitoring ^{CODESYS Forge talk (Post)}
Recently I’ve been exploring ATSCADA iEnergy Tools for SCADA-based energy monitoring systems. One thing I find interesting is how modern SCADA platforms are evolving beyond traditional machine monitoring. Many industrial systems are now using Cloud SCADA architectures for centralized energy management, remote dashboards, and operational analytics. ATSCADA iEnergy Tools supports: Real-time energy monitoring Historical data logging MySQL integration Reporting and Excel export Remote SCADA dashboards Cloud-based monitoring systems I think this type of solution is practical for factories, power monitoring applications, building management systems, and other industrial automation projects where energy optimization is becoming increasingly important. Industrial automation is clearly moving toward web-based and cloud-connected SCADA platforms, especially as more facilities focus on digital transformation and smarter energy management
Last updated: 2026-05-26

Post by nz-dave on Ethernet/IP Scanner Exception ^{CODESYS Forge talk (Post)}
3.5,18,30 The Weintek HMI Runs a dual core CPU.. one for the HMI and one "real time OS" for Running Codesys.
Last updated: 2024-12-28

Post by eschwellinger on Gateway in China - "Gateway not connected" ^{CODESYS Forge talk (Post)}
We have tested this and it had worked at that time with China. which device is it? Anything special?
Last updated: 2025-09-23

Post by hteich on Date and time to String variable ^{CODESYS Forge talk (Post)}
Did you find out how to do it? The link posted by lukas didn't help me much further
Last updated: 2025-10-07

Post by ton on How to create a stopwatch? ^{CODESYS Forge talk (Post)}
If you use LTIME() you will be very accurate and be able to have a normal task cycle time.
Last updated: 2023-12-16

Post by davidbo on How to stop dhcpcd and use SysSockSetIpAddressAndNetMask to set address? ^{CODESYS Forge talk (Post)}
The reason for why CODESYS halts was a CODESYS watchdog exception. 'sudo ip' takes a long time.
Last updated: 2025-11-04

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

Post by msirotkin on EtherCAT status errors ^{CODESYS Forge talk (Post)}
Didn't help. I'm just trying to understand why the errors occur. Are they from the poor driver or from the Linux network stack. That's why I wanted to know how the rxerros and lostframes are counted. Because in other places (like ethtool info) there are no any issues. And the Ethercat device works fine. And it also strange that on the second ethernet port with a different HW and driver Ethercat works better, but still time to time gets such errors.
Last updated: 2025-11-26

Post by wbj0t on mobus tcp slave device. read/write holdings with 2 variables. ^{CODESYS Forge talk (Post)}
Hi there. I have an issue to read and set time for the controller. In the issue many registers described as writable by 6/16 functions, and, in this time, also(!) readable! For example: I have time registers: min, hour, day, mon, year. By specifications it is possible check time (so I need always update these varibles in loop) and set time by writing these same registers, BUT how to set, if they will immediatle updated by current time after writing? So, I need to separate one address at two variables. I have seen option mark: Overlay of the process image by the holding and input register. I understand this so: When I READ by function 3, I will get variable that connected with the same INPUT address and when I WRITE by 6/16 this will change second variable that connected with HOLDING address. BUT, this mark doesnt work, when I write 6/16 and try to get by function 3, I will get written value instead INPUT variable. So, what to do?
Last updated: 2024-03-20

Post by macros8 on Alarm Management - latched variable represented as Text list ^{CODESYS Forge talk (Post)}
Hi, I haven´t noticed you put the comment here. I thing it´s a bit different. What I want is to have detail errors of technology in data type e.g. INT. This variable I would latch to the corresponding error msg but I would like to get it convert to text from the text list and not keep it in INT form. Example. Main error Valve Error: SubErrors 1 - Both sensors 2 - Not retracted in time 3 - Not pulled out in time In HMI Main error + latch SubErrors => "Valve Error: Both sensors" The benefit is that text lists are part of translation and can be easily manipulated. I know I can create whole string msg in PLC but then, it lose advantage of Alarm management. Thanks. M.
Last updated: 2023-11-07

Post by phuvutran on CODESYS Date/Time Picker in Dialog does not update value on close (focus issue) – any workaround? ^{CODESYS Forge talk (Post)}
Hi everyone, I am working with CODESYS 3.5.21 and using the Date/Time Picker inside a dialog (popup visualization). I noticed a behavior that seems problematic: The Date/Time Picker does NOT update the bound variable immediately. It only updates when the control loses focus/select. This causes an issue in my dialog: User selects a new date/time Immediately presses OK (which closes the dialog) The new value is NOT saved The variable still contains the old value So it seems the Date/Time Picker still holds the value internally and does not commit it before the dialog is closed.
Last updated: 2026-05-20

Post by egret on Issue with J1939, PGN 65267 (Vehicle Position) ^{CODESYS Forge talk (Post)}
I have a J1939 network (ISOBUS) connected to my PLC. I can receive various PGNs such as 65256 (Vehicle Direction/Speed) and 65254 (Time/Date). However, I cannot receive 65267 (Vehicle Position). PGN 65267 (VP) contains SPN 584 (Latitude) and SPN 585 (Longitude). On the network both SPNs return a value of -210 (meaning the CAN message payload is zero in both cases). The conversion settings are the default values and appear to be correct (see attached screenshot). Using a CAN analyser I can see that PGN 65267 (Vehicle Position) is being transmitted over the network with valid (non-zero) data that matches the latitude and longitude coordinates I would expect. I've created a program to read the raw J1939 data and this also returns valid data. It seems that the Codesys J1939 database has a problem with reading PGN 65267 messages. Can anybody else confirm this? I'm using Codesys Version 3.5 SP16 Patch 5.
Last updated: 2023-09-13

Post by abinvest579 on TCP Client ^{CODESYS Forge talk (Post)}
Hi All, I am using codesys based plc to read and control magna power DC supply over LXI protocol using SCPI command. To connect device required socket programming for that i am using Net base service library function block TCP_Client to establish connection over TCP/IP , TCP_Write to write SCPI commands and TCP_Read to read data from Magna power DC supply. I have attached screenshot for logic developed. I am able to connect and write commands to device but i not receiving any information from device. For writing Commands i also tried various end of line character like \n,<nl>, A, D, 10, 13, 0x0A, 0x0D but not received any status from device. For testing purpose i am using simple command '*IDN?' to read data. Also if tried to check on hercules software what data actually plc read, first it read correct data after that is read wrong data as see in screen shot. 'Hello World' was correct read and after that Codesys in replaced with 'Codesysorld' that is not correct way. Same issue also appeared for send data. Any one have face same issue how i can read data directly from device correctly and send data please suggest solution on this.</nl>
Last updated: 2024-07-01

Post by ton on How to create a stopwatch? ^{CODESYS Forge talk (Post)}
One i wrote this to measure elepse time When xMeasure is true is starts en when false it stops and time is messured. FUNCTION_BLOCK FB_ElapseTime VAR_INPUT xMeasure: BOOL; END_VAR VAR_OUTPUT xRisingEdge: BOOL; xFallingEdge: BOOL; tElapsed: TIME; ltElapsed: LTIME; ltPrev_Elapsed: LTIME; ltElapsedMax: LTIME; END_VAR VAR xLastValue: BOOL; LTIMEStart: LTIME; LTIMEEnd: LTIME; tonReset: TON:= (IN:= TRUE, PT:= TIME#30S0MS); END_VAR ------------------------------------------- xRisingEdge:= (xLastValue XOR xMeasure) AND xMeasure; xFallingEdge:= (xLastValue XOR xMeasure) AND NOT xMeasure; IF xRisingEdge THEN ltPrev_Elapsed:= ltElapsed; LTIMEStart:= LTIME(); END_IF IF xMeasure OR xFallingEdge THEN LTIMEEnd:= LTIME(); END_IF ltElapsed:= LTIMEEnd - LTIMEStart; ltElapsedMax:= MAX(ltElapsedMax, ltElapsed); tElapsed:= LTIME_TO_TIME(ltElapsed); xLastValue:= xMeasure; tonReset(); IF tonReset.Q THEN tonReset.IN:= FALSE; ltElapsedMax:= LTIME#0NS; END_IF Meaby this will help.
Last updated: 2023-12-09

<identifier>: POINTER TO <data type | function block | program | method | function>; ^{CODESYS Forge talk (Thread)}
<identifier>: POINTER TO <data type="" |="" function="" block="" program="" method="">;</data></identifier>
Last updated: 2022-03-23

Post by lsislsis on Alarms Placeholder ^{CODESYS Forge talk (Post)}
Hello. When i put placeholders at "/etc/codesyscontrol/CODESYSControl.cfg" : [SysFile] FilePath.1=/etc/codesyscontrol/, 3S.dat IecFilePath.1=/proc/, cpuinfo IecFilePath.2=/proc/, iomem PlaceholderFilePath.1=/sys/devices/w1_bus_master1, $OneWire$ PlcLogicPrefix=1 PlaceholderFilePath.2=/data/persistence, $ac_persistence$ PlaceholderFilePath.2.Volatile=1 PlaceholderFilePath.2.View=1 PlaceholderFilePath.3=/data/alarms, $alarms$ PlaceholderFilePath.3.Volatile=1 PlaceholderFilePath.3.View=1 Where "Data" are my USB Flash. I take these attachment errors at run time. What i am doing wrong.
Last updated: 2024-10-15

Post by ketanvaishnav on Redundancy Codesys Runtime, Synchronization ^{CODESYS Forge talk (Post)}
i am facing same data sync issue. i am use two 750-8212 (FW30) controllers. datas are sync from active to standby during changeover time, but datas are not sync from standby to active.
Last updated: 2026-01-30

Post by razebones on sdo read write codesys 3.5 ^{CODESYS Forge talk (Post)}
ENG For some reason, I can't bind a variable to the data parameter. Also, why does only the sdo_read4 function work for me? I also can't write through sdo_write4. I can only view the received values via sdo_read4. Please help me with this task. Moreover, I tried to write the values through sdo write 4 and for a while the data stopped being written and I overwritten it manually and sdo read4 started working again and at the same time they do not want to work in the main task. RU Я не могу почему то привязать переменную к параметру data. Так же у меня почему работает только функция sdo_read4 так же не могу записать через sdo_write4. Могу только просматривать полученные значения через sdo_read4. Помогите пожалуйста с этой задачей. Причём я попытался записать значения через sdo write 4 и у меня на какое то время перестали записываться данные и перезаписал вручную и sdo read4 начал работать снова и одновременно они не хотят работать в main task.
Last updated: 2025-04-01

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