aikorob

SLC 5/05 on 2 ethernet networks

3 posts in this topic

Is it possible for a SLC 5/05 to talk to 2 networks? We have an Entek extruder with a 1747-L553 processor. The serial port is connected to an HMI. There is a DeviceNET card for communication to temp controllers. The Ethernet port is connected to a web access device provided by Entek for remote troubleshooting. The other ports on the web access are connected to other downstream equipment. This whole assembly has a separate VLAN with a 192.168.XXX.XXX address which out IT department have given access rights for Entek to remote in. Due to demand, the machine is being operated substantially more, and the operator/supervisor is no longer able to be there to monitor. A suggestion was made to put it on our network, and use RSView32 Remote Display (we already have several seats) to show the important parameters in the supervisor's or engineer's office. Does anyone know of a way we can get this PLC on our network so we can monitor it; and still give Entek remote access? Any router/ switch/ smoke signal generator we can use to handle the communications? I have 3 empty slots in the SLC rack.

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Not sure if this will help, we use a unit called a cosy 141 from eWon it allows a PLC network to be connected to a factory lan network while keeping its own unique IP addresses, as long as the factory lan had access to the internet remote access is then achieved via a free eWon eCatcher account. http://ewon.biz/products/ewon-cosy

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It sounds as though you are getting remote support over Internet connection. Since the company router / firewall will normally prevent inbound traffic you have two main options: Open inbound ports and forward them to the extruder device. (It sounds as though this is what has been done.) Install a device which "phones home" periodically to see if the remote user wants anything done. This is usually the easier option as most IT policies allow outbound traffic but block inbound. It is the principle used by LogMeIn, AnyDesk, etc., but also by industrial secure access systems such as Secomea.Can you explain further your setup? i.e., How is the web access device connecting to the Internet? e.g., Internet - Router - Company Network (10.x.x.x) - Router (192.168.x.x) - Strange device - PLC (192.168.0.0), or give us a diagram.

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