Post by gunstr on CODESYS control on RPi starts, shortly runs, then exits ^{CODESYS Forge talk (Post)}
Thank you very much for the quick answer! The RPi hw were delivered last week so it's probably a resent version. I found an old scrapped board (2 years or so) with a broken GPIO that I tested with the same SD card image and with that board Codeys can run for the full 2h demo period without issues. Then I went back the the new board to test the 4.17.0.0 release but the installation fails... [INFORMATION] Standard output: create and install daemon [INFORMATION] Standard output: codesyscontrol started [WARNING] Unable to detect Raspberry Pi Architecture. Setting armv6l as default, you can change this through the settings panel. [INFORMATION] Standard output: codesyscontrol stopped [ERROR] Expected exit value of command failed: expected 0, received 1 [WARNING] Error setting the Raspberry Pi Architecture [ERROR] Error installing codesyscontrol Do you have any idea what could be the reason? I'm using an OS image including Python drivers for LCD and some I/O:s from last year to keep things stable, but also after upgrading with sudo apt update && sudo apt upgrade I still get the same error Reverting back to 4.15.00 works fine: [INFORMATION] Standard output: create and install daemon [INFORMATION] Standard output: codesysedge started [INFORMATION] Successfully installed codesyscontrol [INFORMATION] Successfully started CODESYS Edge Gateway for Linux [INFORMATION] Successfully started CODESYS Control for Raspberry Pi SL but as before the Codesys services stops after 30 seconds. And I noticed that the Codesys control stops and is not reachable also if I have no application loaded.
Last updated: 2025-09-02

Post by nulltrace on Modbus TCP Server connection is ESTABLISHED but all holding registers are value 0? ^{CODESYS Forge talk (Post)}
your case looks different, the first one was an codesys modbus tcp-slave, your's an Master-Application with gateway. I dont know this Unit, but i would say, from Point of Codesys it looks wrong configured. Just give us more detailed configuration and the please make a sketch of the topology you're trying to realise.
Last updated: 2026-04-08

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Last updated: 2024-10-26

Post by hwopereis on How to use Application Trigger in Modbus TCP Server ^{CODESYS Forge talk (Post)}
Hi, I'm currently reading and writing several registers with a Modbus TCP server as a subdevice of a Modbus TCP Client. If I read and write cyclically, there are no issues. The problem is this: I see there is also the option to write by "Application", which I would like to use. However, I don't know With the Modbus RTU client, I see there is a trigger variable, xTrigger, to trigger the writing tasks. However, I can't find any such trigger for the Modbus TCP Client. Does anybody know how to implement the trigger behavior for the Modbus TCP client? In particular, I struggle to find the exact "trigger" variable. I'm running Modbus Client version 4.4.0.0 Thanks in advance!
Last updated: 2024-07-01

Post by dkugler on Webvisu client connection monitoring ^{CODESYS Forge talk (Post)}
is your pointer set to the correct visu client? set a breakpoint in your client iteration and step through the active visu clients like programming system, targetvisu, webvisu,... and check the last usage value of each client
Last updated: 2024-08-30

Post by timvh on Help with DynamicTextGetTextW ^{CODESYS Forge talk (Post)}
First of all you need to enable "Use unicodestrings" in the Visualization Manager. This function returns a pointer to a WSTRING (not STRING). To get this wstring value, do something like this: VAR myWstringVariable : WSTRING(255); END_VAR myWstringVariable := myResult^; // this is dereferencing the pointer to the WSTRING.
Last updated: 2024-09-03

Post by pernockham on Inheritence of struct, ^{CODESYS Forge talk (Post)}
Easier that I thought, by ALIAS TYPE log_item_val_type : ( BOOL_ := 0, INT_, REAL_, STRING_ ); END_TYPE TYPE LOG_DATA_BASE STRUCT val_type : log_item_val_type; (* value, name etc *) ENDSTRUCT ENDTYPE TYPE LOG_DATA_BOOL : LOG_DATA_BASE := (val_type := log_item_val_type.BOOL_); END_TYPE TYPE LOG_DATA_INT : LOG_DATA_BASE := (val_type := log_item_val_type.INT_); END_TYPE TYPE LOG_DATA_REAL : LOG_DATA_BASE := (val_type := log_item_val_type.REAL_); END_TYPE TYPE LOG_DATA_STRING : LOG_DATA_BASE := (val_type := log_item_val_type.STRING_); END_TYPE
Last updated: 2025-03-05

Post by dim54 on MBChannel ^{CODESYS Forge talk (Post)}
Hello! I am interested in the Modbus Slave channel parameter uiReadLength to use in the ST-program (see picture). How to read the value of uiReadLength in a ST-program? Only Edwin the Great and Terrible can answer this question.
Last updated: 2024-01-22

Post by tomas111 on Text List Fallback Value ^{CODESYS Forge talk (Post)}
What version of codesys? Need to avoid in any specific element? Try writing %s in the text, it should work. Or better yet, attach a screenshot.
Last updated: 2024-04-17

Bypass of "onlineapp.login" ^{CODESYS Forge talk (Thread)}
Bypass of "onlineapp.login"
Last updated: 2014-08-22

Management of Unit Tests ^{CODESYS Forge talk (Thread)}
Management of Unit Tests
Last updated: 2018-10-05

Example of CmpIecVarAccess ^{CODESYS Forge talk (Thread)}
Example of CmpIecVarAccess
Last updated: 2020-04-03

Cause of error message ^{CODESYS Forge talk (Thread)}
Cause of error message
Last updated: 2021-09-18

ARRAY of unknow struct ^{CODESYS Forge talk (Thread)}
ARRAY of unknow struct
Last updated: 2017-10-09

Initialization of POUs (FB_Init) ^{CODESYS Forge talk (Thread)}
Initialization of POUs (FB_Init)
Last updated: 2024-07-29

Comparing Arrays of structure ^{CODESYS Forge talk (Thread)}
Comparing Arrays of structure
Last updated: 2024-08-23

Array of Program ^{CODESYS Forge talk (Thread)}
Array of Program
Last updated: 2024-09-03

Track position of dialog ^{CODESYS Forge talk (Thread)}
Track position of dialog
Last updated: 2025-02-25

Inheritence of struct, ^{CODESYS Forge talk (Thread)}
Inheritence of struct,
Last updated: 2025-03-14

Automatic assignment of instances ^{CODESYS Forge talk (Thread)}
Automatic assignment of instances
Last updated: 2024-10-17

Implementation of IEC-104 ^{CODESYS Forge talk (Thread)}
Implementation of IEC-104
Last updated: 2025-10-14

SAfe Shutdown of BBB ^{CODESYS Forge talk (Thread)}
SAfe Shutdown of BBB
Last updated: 2017-08-07

ARRAY [*] OF in PLCopenXML ^{CODESYS Forge talk (Thread)}
ARRAY [*] OF in PLCopenXML
Last updated: 2018-10-26

Simulation of SysLibStr? ^{CODESYS Forge talk (Thread)}
Simulation of SysLibStr?
Last updated: 2012-09-04

Import of .gdc files ^{CODESYS Forge talk (Thread)}
Import of .gdc files
Last updated: 2018-12-25

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