DH+ Example
Before we show you how to connect to an SLC through a ControlLogix Gateway using Data Highway Plus (DH+) , you need to understand what a connection path is and how to build one, see the Connection Paths, Follow the Path, and Building the Connection Paths Entries sections.
The example here, as pictured below, shows connecting through a ControlLogix Gateway to 3 different SLC 5/04 devices via DH+.
The connection paths are:
SLC A 1,3,3,21
SLC B 1,3,2,40
SLC C 1,3,2,41
The following table shows the walk-through for these numbers:
Example |
|
Connection Paths |
Walk-through from PLC 1 to SLC A, B, & C |
|
1 |
Move out of ENBT Module to the backplane |
|
3 |
Move to DHRIO Module in Slot 3 |
|
2 (for SLC B&C) 3 (for SLC A) |
Move out DH+ Channel A, B, or C |
|
21 (for SLC A) |
Move in DH+ Station Number |
To connect to an SLC through a ControlLogix Gateway using Data Highway Plus (DH+)
-
Go to the Configure section of the Gateway webpage.
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Scroll down and select OPC-UA > Devices.
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On the Devices page, find the orange arrow and click on Create new Device.
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On the Add Device Step 1: Choose Type page, select Allen-Bradley SLC, and click Next.
-
On the New Device page, leave all the default values and type in the following fields:
Name: SLC
Hostname: type the IP address for the PLC, for example 10.20.4.62
Connection Path: 1,6,2,1 ( 1 means going to the back plane, 6 is the slot number of the DHRIO Module to move to, 2 is the DH+ Channel A moving out of DHRIO Module, 1 is the SLC station number) -
Click Create New Device.
The Devices page is displayed showing the SLC device is added to Ignition. The Status will show as Disconnected and then Connected. -
To see all the tags, go to OPC Connections > Quick Client in the Configure section, on the OPC Quick Client page expand the SLC folder and you can see all the tags.
DHRIO Example
