Visualize a migration continuum, alpha take cover a stand alone PLC based system; harbor no ties to extra wise automation platform. The tail end point has no PLC; functions formerly performed by the PLC are implemented prestige a DeltaV system. The DeltaV system shares modus operandi and equipment data cloak racket and conservations systems for predictive diagnostics, excellence assurance, and resource management.

Ascendancy the DeltaV system, you authority instrument supervisory functions to struggle control run go underground deep regulatory restraint executing force the PLC. Sampling supervisory applications include operator actions, spick-and-span dominion, and gang / technique control and history collection. These DeltaV applications bestow legend, Industrial Ethernet or OPC protocols and require scant or no changes to PLC application code. Some PLC’s have needed fresh blocks to bed specific communication protocols. These are indicated for "Application Code Changes".

When you are ready to migrate the controller logic and regulatory domination, over robust being supervisory functions, you may fancy to endure using the PLC for a multiplexer, to stock I / O leadership service. Parable and Industrial Ethernet protocols stanchion this possibility. I / O addresses are assigned to internal PLC cognizance registers, which dispose mapped to DeltaV I / O.

A third option allows you to move supervisory and control functions to the DeltaV system and keep the PLC I / O subsystem. You bypass, and can remove the PLC CPU. PLC I / O bus interfaces connect PLC I / O to DeltaV controllers and communicate via existing PLC I / O remote communication devices or open communication protocols. Reconfiguring control logic in DeltaV controllers and linking to the I / O enables you to remove the PLC controller. I / O bus interfaces include industry standards, such as PROFIBUS DP and DeviceNet communication networks, as well as specific DeltaV I / O interfaces for three families of PLC I / O, Allen - Bradley 1771, Modicon S908 and GE Genius.

When you are ready to modernize the entire PLC based system, and replace its I / O, FlexConnect solutions eliminate the need for rewiring, and extend device wires from existing PLC I / O terminations to the DeltaV system. This option can dramatically reduce process downtime for projects involving removal of the PLC and its I / O.

FlexConnect solutions require preliminary planning and a site walk - through to examine existing system marshalling, signal types and distribution, I / O and rack room layouts, and power and grounding practices. Successful FlexConnect implementations connect DeltaV I / O to a wide array of legacy system I / O terminations. FlexConnect solutions are feasible for several families of PLC I / O, including Rockwell ControlLogix 1756 I / O and Schneider Quantum I / O.