====== Network Configuration ======

Starting from version 2.6.5, Mervis IDE includes a separate "Configuration" item for each PLC in the solution, allowing you to set all configuration parameters related to the PLC.

The network configuration has been moved to a separate node "Network".

After inserting a PLC into the solution, a list of all predefined network interfaces available for that type of PLC will appear under the Network node.

{{:en:mervis-ide:35-help:ide_configuration_network.png?direct|}}

At the highest level, globally applicable parameters are defined - //Default Gateway// and //DNS//. These are always valid for the entire PLC and are not set at the level of individual interfaces.

The "main" network interface for configuration through [[cs:mervis-ide:35-help:035-software_basic:060-libraries:045-system-function:040-configuration|functions]] for programmatic manipulation of configuration parameters is highlighted in bold.

  * **Network**
    * Default Gateway
      * ensures access from the device to addresses that are not directly reachable within the local network
      * must be within the network range of one of the network interfaces
      * e.g., 192.168.1.1
      * https://en.wikipedia.org/wiki/Default_gateway
    * DNS
      * e.g., 192.168.1.1 or 8.8.8.8 (https://en.wikipedia.org/wiki/Google_Public_DNS)
      * https://en.wikipedia.org/wiki/Domain_Name_System

  * **Ethernet Network Interface**
    * Enabled - True/False
      * The interface configuration is saved to the PLC even if the network interface is disabled
    * IP Configuration
      * None
        * the interface has no own network configuration. E.g., it is part of a Bridge
      * Static
        * IP address - e.g., 192.168.1.10
        * Subnet mask - e.g., 255.255.255.0
      * DHCP
        * network interface settings will be obtained from the DHCP server
        * **Important**: The resulting PLC configuration, when DHCP is set on multiple interfaces, depends on the PLC operating system
  * **Wifi**
    * Currently, only the mode where the PLC is a client of the Wifi network is supported
    * WiFi ESSID
      * name of the Wifi network to which the PLC should connect
    * Wifi Security
      * Open
      * WEB
      * WPA (Personal)
      * WPA2 (Personal)
    * Password
      * password for the Wifi network to which the PLC should connect
    * IP Configuration
        * None
          * the interface has no own network configuration. E.g., it is part of a Bridge
        * Static
          * IP address - e.g., 192.168.1.10
          * Subnet mask - e.g., 255.255.255.0
        * DHCP
          * network interface settings will be obtained from the DHCP server
          * **Important**: The resulting PLC configuration, when DHCP is set on multiple interfaces, depends on the PLC operating system
  * **GSM**
    * Enabled - True/False
    * Username
    * Password
    * Security - None/PAP/CHAP
    * PIN code
    * Phone number
    * APN

===== Advanced Network Configuration =====

In addition to predefined network interfaces, you can add a Bridge or other network interfaces that were connected to the PLC beyond the standard configuration through the context menu.

[todo image]

==== Bridge ====

In the basic configuration, it ensures transparent interconnection of all assigned network interfaces. From the PLC's point of view, it acts as a single network interface, and the corresponding parameters are set accordingly.

PLC ports then function similarly to a switch, to which you can connect, for example, a local technology network, a visualization panel, and simultaneously the PLC is also connected to the same network.

{{:en:mervis-ide:35-help:ide_configuration_bridge.png?direct|}}

  * **Bridge**
    * Enabled - True/False
      * The interface configuration is saved to the PLC even if the network interface is disabled
    * IP Configuration
      * None
        * the interface has no own network configuration. E.g., it is part of a Bridge
      * Static
        * IP address - e.g., 192.168.1.10
        * Subnet mask - e.g., 255.255.255.0
      * DHCP
        * network interface settings will be obtained from the DHCP server
        * **Important**: The resulting PLC configuration, when DHCP is set on multiple interfaces, depends on the PLC operating system