Modem vs router vs gateway6/10/2023 What is a PLC Gateway?Īs suggested by its name, a PLC gateway is a network component also known as the protocol converter. Even if someone were to gain unauthorized access to your company network, they would not be able to access the machines’ PLCs or HMIs. This ensures that no one obtains unauthorized access to your machines or factory network. This protects their data traffic via the router’s integrated firewall by separating the machine network from the company’s computer network and the Internet. All connected PLC controls, industrial robots (cobots), HMI touch panels and image processing cameras behind the router can communicate simultaneously via the industrial VPN router. ![]() With an industrial VPN router, you can connect all of your devices to your VPN network without having to install and configure the VPN software on each individual device. It creates a secure connection for the entire site so that all traffic behind the VPN router is sent via the internet over a secure data-tunnel to the destination network. On a VPN router the VPN is directly installed as part of its firmware. This connection cannot be shared with other devices on this network. With a standard router, you must install VPN software on every device before you can use it to connect to your VPN network. What is an Industrial VPN router for PLC? Sometimes it is used as a backup when there is an unstable wired internet connection and continuous internet access is required. In industry, this type of router is used in case of network restrictions (imposed by factory owners, e.g., when PLCs are not allowed to use the business internet connection) or in remote off-site locations. It has a built-in modem to link a PLC to the internet. You could also state that “you set up a router as a gateway to a remote network”.Ī 4G or LTE router is a router that can connect to the Internet using a cellular connection. A gateway must always be a router, but a router is not necessarily a gateway. It’s a router that provides access for IP packets into and/or out of the local network. ![]() The basic function is to receive information from any source connected to it and to dispatch that data only to the corresponding destination.Ī gateway is a network point that enables access to another network. Gateway: Connection between networks that are not necessarily on the local network and that are outside the organisation.Ī network switch is a high-speed device that receives incoming data packets and redirects them to their destination on a LAN.Router: Connection within the local networks, for instance, a factory and an office network.To choose between a gateway or a router, you must consider the requirement of your network. ![]() As a network layer device, a router connects multiple networks together and controls the data traffic between them using wired, Wifi or cellular connectivity. A router is a device or service that provides the function of routing IP packets between networks.
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