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June 19, 2017

Remote Access to Allen Bradley Rockwell PLCs

A few common questions I get from customers: Does the C6 Router support Ethernet/IP, DH+? Can the C6 Router connect to my ControlLogix, MicroLogix, CompactLogix, etc.? Can I get remote access to Allen Bradley PLCs?

 

The answer to these questions is yes!

 

The C6 Router used in conjunction with Combivis Connect software can setup a secure end-to-end VPN connection to your Allen Bradley PLC’s.

 

 

This blog post will review the steps needed to establish remote access with a C6 industrial router to a Allen Bradley PLC and RSLogix software.

 

Step 1: Internet Access to Router

 

In order for Combivis Connect to setup a VPN connection, the C6 router must have internet access. The router acts as a VPN server and assigns the user PC an IP address within the VPN network ensuring a direct end-to-end connection using secure TCP/UDP ports and SSL/TLS protocol.

 

This can be accomplished two ways. Either by configuring the WAN interface or configuring the modem with a standard SIM card.

 

Remote access allen bradley WAN config allenbradleyconnect_modem

 

Step 2: Configure LAN Interface

 

Assign the LAN interface an IP address within the local PLC network. All Allen Bradley PLC’s using EtherNET/IP, DeviceNet, ControlNet, etc. belonging to the subnet of the LAN interface can be reached via the VPN tunnel.

allenbradleyconnect_lan

 

Step 3: Serial Port Configuration

 

Allen Bradley PLC’s using serial protocols such as DF1, DH+, or DH485 can also be remotely monitored and programmed. Combivis Connect uses a virtual serial adapter to map to the physical serial port of the C6 router. Select the correct port setting.

allenbradleyconnect_serial

remote-connect-rockwell-slc-500

The C6 Industrial Router supports remote connection to legacy PLC-5 and SLC 500 series PLCs as well

Step 4: Register Router to Domain

 

Before the C6 router can be connected, too, the router must be assigned to the domain of Combivis Connect. Assign the router a name, and apply the settings.

domain_registration

 

Step 5: Connect to C6 Router

 

 

Once the router has finished rebooting, the router can be connected to. Simply select the Connect button to establish a connection. Once the router is connected the all Allen Bradley PLC’s can be accessed via the VPN tunnel.

 

vpn_connect

 

Step 6: Remote Access with RSLogix

 

At this point RSLogix can go online with the PLC and program in desired Controller operating mode.

 

remoteconnect_allenbradley

 

 

 

Remotely accessing Allen Bradley PLC’s is easy and reliable using Combivis Connect and the C6 Router. There is no lengthy setup process or complicated communication driver setup to access your Allen Bradley PLC’s.

 

Are you interested in remotely accessing your Allen Bradley PLC’s with a C6 Router? Contact a KEB controls engineer today to discuss.

 

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