What subversion server is recommended to use with the SVN plugin? ^{CODESYS Forge talk (Thread)}
What subversion server is recommended to use with the SVN plugin?
Last updated: 2021-01-22

Visualization integrated in smartphone and communication with PLC server with JSON ^{CODESYS Forge talk (Thread)}
Visualization integrated in smartphone and communication with PLC server with JSON
Last updated: 2018-04-15

Using Automation server to access RPi softplc over a 4g link with a dynamic IP address? ^{CODESYS Forge talk (Thread)}
Using Automation server to access RPi softplc over a 4g link with a dynamic IP address?
Last updated: 2022-02-15

3.5.17: Setting up OPCUA Client data source to another PLC OPCUA server ^{CODESYS Forge talk (Thread)}
3.5.17: Setting up OPCUA Client data source to another PLC OPCUA server
Last updated: 2021-11-02

Send RESTful commands to an external non CODESYS device server and HTML Script editing ^{CODESYS Forge talk (Thread)}
Send RESTful commands to an external non CODESYS device server and HTML Script editing
Last updated: 2021-06-10

How to get the Raspberry Pi PLC to control a Siemens PLC with OPC server ^{CODESYS Forge talk (Thread)}
How to get the Raspberry Pi PLC to control a Siemens PLC with OPC server
Last updated: 2018-11-09

Codesys: UaExpert can not connect to OPC/UA Server of Raspberry Pi ^{CODESYS Forge talk (Thread)}
Codesys: UaExpert can not connect to OPC/UA Server of Raspberry Pi
Last updated: 2021-11-10

How to accept only comms with certificates in OPC-UA server ^{CODESYS Forge talk (Thread)}
How to accept only comms with certificates in OPC-UA server
Last updated: 2018-11-14

CoDeSys OPC DA SL won't install on Windows Server 2012 R2 ^{CODESYS Forge talk (Thread)}
CoDeSys OPC DA SL won't install on Windows Server 2012 R2
Last updated: 2020-11-03

CoDeSys Control for PFC200 ModbusTCP Server Returns Exception:' Gateway path unavailable' ^{CODESYS Forge talk (Thread)}
CoDeSys Control for PFC200 ModbusTCP Server Returns Exception:' Gateway path unavailable'
Last updated: 2020-08-18

Cannot activate OPCUA Server SL license. License shows installed but quantity zero. ^{CODESYS Forge talk (Thread)}
Cannot activate OPCUA Server SL license. License shows installed but quantity zero.
Last updated: 2023-07-06

ENI server: Object type registry not found in the database ^{CODESYS Forge talk (Thread)}
ENI server: Object type registry not found in the database
Last updated: 2010-02-19

Connect opc client to external opc ua simulation server through opc ua ^{CODESYS Forge talk (Thread)}
Connect opc client to external opc ua simulation server through opc ua
Last updated: 2023-08-05

Plc's gets disconnected from OPC server when any one plc shutsdown ^{CODESYS Forge talk (Thread)}
Plc's gets disconnected from OPC server when any one plc shutsdown
Last updated: 2018-02-22

Retreive Port Number of UDP Client connected to my UDP Server ^{CODESYS Forge talk (Thread)}
Retreive Port Number of UDP Client connected to my UDP Server
Last updated: 2020-11-24

Raspi SL MC: Which core is used by OPC-UA server ^{CODESYS Forge talk (Thread)}
Raspi SL MC: Which core is used by OPC-UA server
Last updated: 2020-12-16

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

OPC UA Server with on Codesys + OPC UA Client on Labview ^{CODESYS Forge talk (Thread)}
OPC UA Server with on Codesys + OPC UA Client on Labview
Last updated: 2024-04-12

Post by jacobwago on v3.5 SP19 - Modbus TCP Devices - Channel Limit? ^{CODESYS Forge talk (Post)}
Hello, I have experienced the same issue as described above but for the Modbus Serial configurator. Looking for a solution. In v3.5 SP19 Patch 7 the Modbus Serial Master Slave configurator has a "virtual" limit of 10 channels. In v3.5 SP18 Patch 5 this virtual limit does not exist. I can successfully copy back and forth from 18 to 19 with out any build error. However, this is not a good solution for our customers. What is even more confusing is that the IoDrvModbus library is the same version (4.3.0.0) for both SP18 and SP19. Please help in providing a fix to the virtual channel limit of 10 in SP19. Thanks,
Last updated: 2024-09-29

Post by struccc on Problem Reading Registers via Modbus from non Codesys device ^{CODESYS Forge talk (Post)}
Hi, Might be a good idea first to try out the connection and the device with some handy software, like Modbus Poll. There you can see better, what's really going on... - Is it really connected? - What error code does it return? - Can it read from the register address? - Maybe try Input registers and Holding Registers - can make a difference - Sometimes register addresses are messed up: shifted +-1 (mixing of 2 standards) - Sometimes register addresses start with offset 30000, 40000 ... - Are you using the right protocol? - Is it RTU or TCP? Maybe ASCII? - Can even have a look at the data packets, etc... All this is easier to figure out first with some modbus utility... and then to set it up in CODESYS should not be an issue. P.
Last updated: 2025-03-09

Post by em1681 on Modbus RTU over 750-652 ^{CODESYS Forge talk (Post)}
Hi, It's my first time operating in Codesys 2.3, but I have done a good amount of Codesys programming, so I'm a little familiar. I haven't done a lot of RTU, but a lot of Modbus TCP. I don't have the PLC in my reach at the moment, but I'm trying to be a little ahead. We're adding the 750-652 module to read energy from a flowmeter over RTU. There will only be 1 slave. I attached pictures of my current hardware, PLC code, the register datasheet from the slave and the only modbus serial library I seem to have available. I'm uncertain if this will work. Any help or clarification on how things work will be greatly appreciated. Thanks in advance.
Last updated: 2025-09-01

Post by timl on Application has invalid license metrics ^{CODESYS Forge talk (Post)}
Hallo, ich habe eine Control for Linux SL auf der ich einen TCP Modbus Master anlege, mit dem ich einen Slave auslesen möchte. Das Anlegen funktioniert soweit alles, sobald ich beim ModbusTCPSlaveE/A-Abbild in den Channel eine Variable einfüge, damit ich den Channel auslesen kann, kommt es beim übertragen auf die SPS zu einem Ausnahmefehler. Im Anhang noch eine Bilder der Fehlermeldung und der installierten Lizenzen. CODESYS Version ist V3.5 SP19 Patch 4 Meinem Verständnis nach ist die Modbus Lizenz mit in der Control Standard L inbegriffen und auch in der Lizensierten Softwaremetrik sehe ich keine überschreitung meiner Lizenzbegrenzungen. Daher verstehe ich nicht wieso ich diesen Fehler bekomme und eine auslesung via Modbus nicht möglich ist. Gruß Tim
Last updated: 2024-05-08

Post by dkugler on Modbus RTU Slave ^{CODESYS Forge talk (Post)}
Variablen aktualisieren aktiviert?
Last updated: 2023-12-06

Post by schorge on Modbus RTU Slave ^{CODESYS Forge talk (Post)}
ja
Last updated: 2023-12-10

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