Change NVL List Identifier on Run Time ^{CODESYS Forge talk (Thread)}
Change NVL List Identifier on Run Time
Last updated: 2021-11-26

Is there any Key/Value list or dictionary type available? ^{CODESYS Forge talk (Thread)}
Is there any Key/Value list or dictionary type available?
Last updated: 2014-03-24

TestManager command to execute "Reorder list and clear gaps" ^{CODESYS Forge talk (Thread)}
TestManager command to execute "Reorder list and clear gaps"
Last updated: 2014-04-14

intel 82579 ethernet controler not on supported list ^{CODESYS Forge talk (Thread)}
intel 82579 ethernet controler not on supported list
Last updated: 2019-11-08

How to modify a text list in run-time? ^{CODESYS Forge talk (Thread)}
How to modify a text list in run-time?
Last updated: 2023-06-17

SysDirRead - miss 1 file in the folder list research ^{CODESYS Forge talk (Thread)}
SysDirRead - miss 1 file in the folder list research
Last updated: 2023-12-13

Post by egr99 on Modbus TCP Server connection is ESTABLISHED but all holding registers are value 0? ^{CODESYS Forge talk (Post)}
Hi there, Read the above description and experienced the same: Reading coil/discrete input/input register/holding register doesn't fill the mapped I/O variable. Any suggestions? Defined (see attachment): - Ethernet (with parameters according to the used Ethernet adapter of my Windows 11 laptop) - -Modbus TCP Client - - -LOGO231 as Modbus TCP Server - - -WS242 as Modbus TCP Server (WaveShare Modbus TCP <-> RTU converter) - - - -WS242_01 as Modbus Server, COM port (slave-id 1 RTU) - - - -WS242_03 idem (slave-id 3 RTU) - - - -WS242_11 idem (slave-id 11 RTU) Writing coil/holding register works from a mapped I/O variable works fine. Verification of Modbus traffic with WireShark: QUERY to and the RESPONSE of all slave-ids are correct Status of all defined is CONNECTED, RESPONSE_SUCCESS, RUNNING etc. Request counters increase with expected frequency. Error counter = 0. (To have all counters works fine I had to change Modbus TCP Client's parameter OptimizationON to FALSE). LOGO231 works fine: values in mapped I/O conform expectation WS242 without Modbus Server, COM port and with defined channels (for only 1 slave-id possible) works fine. PLC Settings: Update I/O while in stop: I see xBusy changing from FALSE to TRUE and vice versa. Always update variables: Enabled 1
Last updated: 2026-04-05

Post by husarz17 on How change Unity-ID in TCP Modbus Slave ^{CODESYS Forge talk (Post)}
I need the same issue. In my application TCP server on raspberry (codesys) should have UnitID 1. But it only works when I am requesting with UnitID 255. And my application can't work with this parameters...
Last updated: 2026-03-31

Post by ivanj on Adafruit PWM library ^{CODESYS Forge talk (Post)}
Hi to all. How can I set in parameters of library abowe movement setings by angle or throttle?
Last updated: 2024-10-10

OPC-UA Server, Symbol Set: Raise an error: Object reference not set to an instance of an object. ^{CODESYS Forge talk (Thread)}
OPC-UA Server, Symbol Set: Raise an error: Object reference not set to an instance of an object.
Last updated: 2024-08-08

Post by timvh on Converting each character to a string into ASCII ^{CODESYS Forge talk (Post)}
A standard string is actually a list of bytes that represent the ASCII code for each character. The following part of code will give you the ASCII code of one of the characters in the string: byChar := sInput[i];
Last updated: 2024-11-11

Is it possible to create extensible Parameters in CODESYS ST function blocks? ^{CODESYS Forge talk (Thread)}
Is it possible to create extensible Parameters in CODESYS ST function blocks?
Last updated: 2021-09-17

modified FB interface and I want to update the parameters in all calls ^{CODESYS Forge talk (Thread)}
modified FB interface and I want to update the parameters in all calls
Last updated: 2019-06-06

Open dialog from ST , how to set parameters (vars) to dialog ^{CODESYS Forge talk (Thread)}
Open dialog from ST , how to set parameters (vars) to dialog
Last updated: 2024-06-05

Accessing parameters from a structure or function block with the web interface ^{CODESYS Forge talk (Thread)}
Accessing parameters from a structure or function block with the web interface
Last updated: 2025-12-02

Post by george32 on TCP Server ^{CODESYS Forge talk (Post)}
Dear people, I would like to create a TCP server in my PLC program. The TCP server needs to communicate with an external device. I have been searching the internet and found that the libraries Syssocket or CAA NetBaseSrv are two possible solutions to create a TCP server. From what I have read, CAA NetBaseSrv is more user-friendly to implement than the Syssocket variant. However, I am still struggling to actually implement this library. Foremost is my little knowledge about creating a TCP server and how to read/understand each function block, especially the outputs of some blocks and the types, e.g. server has an output CAA.Handle, but I cannot find the explanation of CAA.Handle. I tried to find a good document that can help me understand how to implement a TCP server, but I could not find it. Thank you in advance, George
Last updated: 2025-02-20

Connect Client Codesys With Server Java ^{CODESYS Forge talk (Thread)}
Connect Client Codesys With Server Java
Last updated: 2023-08-17

Security Screen - Custom Certificates for OPC UA Server? ^{CODESYS Forge talk (Thread)}
Security Screen - Custom Certificates for OPC UA Server?
Last updated: 2023-08-23

OPC UA Server limitations, large array crashes runtime ^{CODESYS Forge talk (Thread)}
OPC UA Server limitations, large array crashes runtime
Last updated: 2023-08-23

CODESYS Automation Server Connector for 3.5 SP11 ^{CODESYS Forge talk (Thread)}
CODESYS Automation Server Connector for 3.5 SP11
Last updated: 2023-08-30

Download Missing Libraries failed, Apache server HTTPS protocol ^{CODESYS Forge talk (Thread)}
Download Missing Libraries failed, Apache server HTTPS protocol
Last updated: 2020-09-23

Log in to remote PLC via Automation Server ^{CODESYS Forge talk (Thread)}
Log in to remote PLC via Automation Server
Last updated: 2020-09-29

Codesys Soft PLC connection to TOP OPC UA- Server ^{CODESYS Forge talk (Thread)}
Codesys Soft PLC connection to TOP OPC UA- Server
Last updated: 2021-03-22

CODESYS Automation Server Connector [1.12.0.0] Installation Error ^{CODESYS Forge talk (Thread)}
CODESYS Automation Server Connector [1.12.0.0] Installation Error
Last updated: 2020-09-12

Raspberry als Modbus-Server und Verhalten der Register ^{CODESYS Forge talk (Thread)}
Raspberry als Modbus-Server und Verhalten der Register
Last updated: 2015-03-04

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