Configure my PLC (Raspberry Pi) as a TCP Modbus Slave ^{CODESYS Forge talk (Thread)}
Configure my PLC (Raspberry Pi) as a TCP Modbus Slave
Last updated: 2018-04-10

2 Raspberry PIs (Modbus Master + Slave) mit Codesys ^{CODESYS Forge talk (Thread)}
2 Raspberry PIs (Modbus Master + Slave) mit Codesys
Last updated: 2014-08-17

Modbus/TCP slave not running on Raspberry Pi ^{CODESYS Forge talk (Thread)}
Modbus/TCP slave not running on Raspberry Pi
Last updated: 2021-02-18

"Raspberry pi SPS" und arduino uno als Modbus Slave ^{CODESYS Forge talk (Thread)}
"Raspberry pi SPS" und arduino uno als Modbus Slave
Last updated: 2015-09-30

RPi's as both Master + Slave Modbus TCP/IP ^{CODESYS Forge talk (Thread)}
RPi's as both Master + Slave Modbus TCP/IP
Last updated: 2017-10-22

Modbus Master / Slave with 2 Raspberry PIs and Codesys ^{CODESYS Forge talk (Thread)}
Modbus Master / Slave with 2 Raspberry PIs and Codesys
Last updated: 2014-07-29

Some troubles with Modbus RTU Slave on Raspberry Pi 2 ^{CODESYS Forge talk (Thread)}
Some troubles with Modbus RTU Slave on Raspberry Pi 2
Last updated: 2021-11-23

Problem physical adress on tcp modbus slave ^{CODESYS Forge talk (Thread)}
Problem physical adress on tcp modbus slave
Last updated: 2022-11-07

Unable to connect modbus slave TCP under wlan0 as AP ^{CODESYS Forge talk (Thread)}
Unable to connect modbus slave TCP under wlan0 as AP
Last updated: 2018-05-06

Modbus TCP error > Slave does not support this register offset ^{CODESYS Forge talk (Thread)}
Modbus TCP error > Slave does not support this register offset
Last updated: 2020-08-31

ModbusFB - Modbus TCP Slave non standard port ^{CODESYS Forge talk (Thread)}
ModbusFB - Modbus TCP Slave non standard port
Last updated: 2022-04-19

Dynamic setting of the modbus tcp/ip slave ip address ^{CODESYS Forge talk (Thread)}
Dynamic setting of the modbus tcp/ip slave ip address
Last updated: 2024-02-17

Issues with Modbus Slave with Raspberry Pi ^{CODESYS Forge talk (Thread)}
Issues with Modbus Slave with Raspberry Pi
Last updated: 2024-07-11

Number of Connections to Modbus TCP Slave ^{CODESYS Forge talk (Thread)}
Number of Connections to Modbus TCP Slave
Last updated: 2024-08-01

Number of Connections to Modbus TCP Slave ^{CODESYS Forge talk (Thread)}
Number of Connections to Modbus TCP Slave
Last updated: 2024-08-01

Number of Connections to Modbus TCP Slave ^{CODESYS Forge talk (Thread)}
Number of Connections to Modbus TCP Slave
Last updated: 2024-08-01

Number of Connections to Modbus TCP Slave ^{CODESYS Forge talk (Thread)}
Number of Connections to Modbus TCP Slave
Last updated: 2024-08-01

modbus from serial to tcp ^{CODESYS Forge talk (Thread)}
modbus from serial to tcp
Last updated: 2017-06-05

Modbus read from client ^{CODESYS Forge talk (Thread)}
Modbus read from client
Last updated: 2013-05-22

Change modbus server parameters from program ^{CODESYS Forge talk (Thread)}
Change modbus server parameters from program
Last updated: 2024-07-16

Change modbus server parameters from program ^{CODESYS Forge talk (Thread)}
Change modbus server parameters from program
Last updated: 2024-07-17

Post by timvh on Unable to Connect to Modbus RTU Device ^{CODESYS Forge talk (Post)}
If your Control Win is the Modbus "Master" then your configuration should be something like: Modbus_COM (Serial port) - Modbus Master (this is the Control Win SoftPLC actively setting up the communication) - Modbus Slave (this is then your WAGO 750-315) You need to add channels to the Modbus Slave configuration to inform the master which variables to read/write from the Wago module. The way you configured it now, the Control Win is also a slave. PS, don't forget to put the PLC (Control Win) in Run.
Last updated: 2024-09-03

Post by dengsberg on Disable Communications to 'Modbus_Server_COM_Port' from the logic ^{CODESYS Forge talk (Post)}
I have a serial Modbus RTU communicating to the Slave device. But when the control system is not in Run there is no power applied to one of the Modbus Devices. Can I enable / disable the communications to that Modbus Slave in the code based on my running mode, so I don't get all the errors?
Last updated: 2024-08-29

Exception when OPCUA datasource disconnects from Server ^{CODESYS Forge talk (Thread)}
Exception when OPCUA datasource disconnects from Server
Last updated: 2024-09-16

Post by kislov on Disable Communications to 'Modbus_Server_COM_Port' from the logic ^{CODESYS Forge talk (Post)}
Modbus_Slave_COM_Port.Enable := FALSE; where "Modbus_Slave_COM_Port" - slave device name from Device Tree
Last updated: 2024-08-30

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