The EQ7000 is capable of bridging AB Ethernet messages from Allen-Bradley processors to DH+. The following is an explanation of how to setup AB Ethernet messages to access data from a DH+ network.
Configuring AB Ethernet Messages
To communicate to nodes on the DH+ network using AB Ethernet, remote messaging must be used. Using local messaging will only allow communication to a single device located at node 0 on the DH+.
When using remote messaging, the source and destination link IDís are not needed and can be left as 0. The destination address (or remote address) will be the value of the DH+ node address. Please note that DH+ uses octal notation and the application that is being used to setup the message may use decimal notation.
Below is an example of how to setup a remote message in a SLC 5/05 to read data from node 7 on the DH+ network through the EQ7000 at 192.168.2.75.
Browsing the DH+ Network
It is possible to browse known nodes on the DH+ network with the EQ7000 using the AB Ethernet driver in RSLinx. To do this, follow the steps below.
1 . Open the Configure Drivers window and create a new Ethernet Devices driver.
2 . After creating the new driver, the configuration window for station mapping should appear. Enter the node address of the DH+ device in Station column and the IP address of the EQ7000 in the Host Name column. Repeat this step if there are multiple nodes to be browsed.
3 . Once all the nodes are entered, enter the DH+ node address of the EQ7000 in the Station column where the Host Name is Driver. Below is an example showing DH+ nodes 3 and 7 being mapped to an EQ7000 with an IP address of 192.168.2.75 and DH+ node address of 58 decimal (72 octal).
4 . Once the driver is configured click OK to continue. Now that the driver is created, right click on the driver in the RSWho window and select Properties.
5 . In the Properties window, click the Advanced Browse Settings tab. Check the Force network type to option and select Data Highway Plus. Below is an example of how the properties will be set. Click OK to close the window.
6 . Now the driver is setup to browse the nodes specified in the driver configuration, highlight the driver that was just created and make sure Autobrowse is checked. The nodes should now appear as shown below.