This technical note describes the recommended settings for integrating Rockwell PanelView consoles using the Generic Device Ethernet/IP driver for the Virtual IO Module. Both direct Class1 IO connections to classic PanelViews and tag access via a Rockwell controller.
The PanelView 550, 600, 900, 1000, and 1400 allow class1 (implicit) connections via Ethernet/IP as well as tag access (explicit) connections. Class1 (or IO) connections provide a faster, more robust connection path.
For tag access, a PLC is required to interface to the Panelview (ControlLogix, CompactLogix, or SLC). The connection to DeltaV from the PLC is with a DF1 connection (or connections) using via VIM (Virtual I/O Module).
PLC Unconnected Notes
CompactLogix 3 incoming
ControlLogix 10-40* If you enable more than 16 MSGs at one time, some MSG instructions may experience delays in entering the queue. From “EtherNet/IP Modules in Logix5000 Control Systems."
From “EtherNet/IP Modules in Logix5000 Control Systems”:
When communicating implicitly (PanelView terminals only), the controller uses one connection for each terminal. Make sure to account for these connections when designing the system. The Logix5000 controllers:
The larger number of implicit buffers enables significantly more PanelView terminals to simultaneously request data from the controller via implicit communications.
When communicating explicitly, the controller supports 40 outgoing and 3 incoming buffers. This number of incoming buffers limits how many terminals can simultaneously request data from a controller via explicit communications. In other words, while a system can have multiple terminals, only three terminals can explicitly request data from a Logix controller at the same time.
The class1 alternative uses the Generic VIM to talk directly to the PanelView assembly area. This area is formatted to hold the same data that would be accessed via tag from the PLC. The connection is a class1 (IO) connection, with a specific update rate.
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