How to edit TCP and creat *.trg file? ^{CODESYS Forge talk (Thread)}
How to edit TCP and creat *.trg file?
Last updated: 2021-05-18

TCP Verbindung "Wrong Configuration" Codesys V3.5 SP 17 RaspberryPi ^{CODESYS Forge talk (Thread)}
TCP Verbindung "Wrong Configuration" Codesys V3.5 SP 17 RaspberryPi
Last updated: 2022-03-19

Link between a raspberry and S7 with TCP connection ^{CODESYS Forge talk (Thread)}
Link between a raspberry and S7 with TCP connection
Last updated: 2018-02-14

TCP/IP Client and connection handle issue ^{CODESYS Forge talk (Thread)}
TCP/IP Client and connection handle issue
Last updated: 2012-12-20

TCP/IP Communication: Problem with response data ^{CODESYS Forge talk (Thread)}
TCP/IP Communication: Problem with response data
Last updated: 2023-06-30

TLS TCP Communication using 3.5.16 NBS Library ^{CODESYS Forge talk (Thread)}
TLS TCP Communication using 3.5.16 NBS Library
Last updated: 2021-05-12

CAA Net Base Services - TCP Keep-Alive ^{CODESYS Forge talk (Thread)}
CAA Net Base Services - TCP Keep-Alive
Last updated: 2019-12-13

Write/Read JSON data to communicate by TCP/IP ^{CODESYS Forge talk (Thread)}
Write/Read JSON data to communicate by TCP/IP
Last updated: 2018-02-08

Komplette Datei (G-Code/ Textdatei) über TCP/UDP empfangen/senden ^{CODESYS Forge talk (Thread)}
Komplette Datei (G-Code/ Textdatei) über TCP/UDP empfangen/senden
Last updated: 2022-05-25

Convert STRING to DWORD for TCP/IP client ^{CODESYS Forge talk (Thread)}
Convert STRING to DWORD for TCP/IP client
Last updated: 2022-06-11

TCP Kommunikation Master Slave Anfänger braucht Hilfe. ^{CODESYS Forge talk (Thread)}
TCP Kommunikation Master Slave Anfänger braucht Hilfe.
Last updated: 2010-06-22

TCP/IP Anbindung Touchpanel an die SPS ^{CODESYS Forge talk (Thread)}
TCP/IP Anbindung Touchpanel an die SPS
Last updated: 2006-06-26

TCP Verbindung zu Drucker in Codesys 3.5 ^{CODESYS Forge talk (Thread)}
TCP Verbindung zu Drucker in Codesys 3.5
Last updated: 2021-02-10

TCP/IP Connection monitoring based on Network 3.5.7.0 Library ^{CODESYS Forge talk (Thread)}
TCP/IP Connection monitoring based on Network 3.5.7.0 Library
Last updated: 2020-09-18

monitoring mulitple PLC's via TCP/IP ^{CODESYS Forge talk (Thread)}
monitoring mulitple PLC's via TCP/IP
Last updated: 2012-03-15

Aufbau einer TCP/IP-Kommunikation zwischen 2 Controllern ^{CODESYS Forge talk (Thread)}
Aufbau einer TCP/IP-Kommunikation zwischen 2 Controllern
Last updated: 2010-10-15

Modubus TCP connection affecting EtherCAT running. ^{CODESYS Forge talk (Thread)}
Modubus TCP connection affecting EtherCAT running.
Last updated: 2013-08-25

mobus tcp slave device. read/write holdings with 2 variables. ^{CODESYS Forge talk (Thread)}
mobus tcp slave device. read/write holdings with 2 variables.
Last updated: 2024-03-20

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 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 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 garrian on How to write multiple coils (Modbus FC15) ^{CODESYS Forge talk (Post)}
Thanks for your reply. I belive it is contiguous, I'm writing to adress 0 to 4. Or, do you mean something else? Well, something is happening. If I on the client set adress 1,2,3 to true, only 1 is set to true on the server side. On the client side, the data is array of word. But on the server side, the coils are array of bool. Holding register is array of word on server side. Can this be a problem? Attached screenshot of how it looks at the server side.
Last updated: 2024-11-17

Post by joanm on Programmatically change the IP addresses of the Modbus TCP slave devices ^{CODESYS Forge talk (Post)}
Hello all, I am working in a project in which there are multiple Modbus TCP slaves. I need to be able to change the IP addresses of those devices from the HMI and I was planning to use the process depicted here: https://faq.codesys.com/display/CDSFAQ/Modbus+TCP+Slave%3A+Dynamic+Setting+of+the+IP+Address I can see the port number is what is used to specify which slave device we want to modify the IP address of. This said, can I freely set arbitrary port numbers to each device? I mean, can I set the first device to be at port 502, the second one at port 503... Any drawback or restriction? Is there any other way to reference to the device without having to change the port numbers? Thank you all in advance.
Last updated: 2024-01-04

Post by ahuckphin on Issues with Modbus Slave with Raspberry Pi ^{CODESYS Forge talk (Post)}
I have a DFRobot RS485 temperature & humidity sensor (SEN0438) connected to my Raspberry Pi via a USB to RS485 adapter. I am able to connect and read the sensor data when running a python code locally. However in Codesys, I encounter this error "A bus error has occurred." and "There was no response in time". Could this be because of Modbus Server Channel and Modbus Server Init configuration on my part? Admittedly I am new to Codesys. To get to this stage, I: 1. added some lines to CODESYSControl_User.cfg 2. added "Modbus_COM" in Codesys and set "Serial Port Configuration" under "General" 3. added "Modbus_Master_COM_Port" in Codesys and checked transmission mode is set to "RTU" 4. added "Modbus_Slave_COM_Port" in Codesys and checked server address is set to 1 (also set 1 in my sensor) 5. added 1 channel and 1 init for "Modbus_Slave_COM_Port" under "Modbus Server Channel" and "Modbus Server Init"
Last updated: 2024-07-10

Post by ofey on Device parameter - ‘ModbusTCP Configuration’ ^{CODESYS Forge talk (Post)}
Hi! Do anybody know how I can add and enable the parameter 'Default Modbus TCP slave' on a device? I am currently writing a program where the PLC shall be set up as a Modbus TCP client, but I dont know how to add parameters to devices in codesys. I'm pretty new to the codesys environment. The picture in the attachment is on a similar PLC project where I have not written the code. my goal is to add this parameter in another project.
Last updated: 2023-10-04

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