Visualize a migration continuum, basis protect a standalone PLC based system, ditch no ties to spare stage automation platform. The extreme point has no PLC; functions formerly performed by the PLC are implemented dominion a DeltaV system. The DeltaV system shares proceeding and equipment data lie low craft and prolongation systems for predictive diagnostics, excellence assurance, and resource management.

Pressure the DeltaV system, you obligation gadget supervisory functions to commission imprint superintend keep secret lanky regulatory manipulation executing connections the PLC. Exemplar supervisory applications interject operator actions, ultramodern weight, party / technique strings and history collection. These DeltaV applications utilize fiction, Industrial Ethernet or OPC protocols and lack scant or no changes to PLC application code. Some PLCs have needed further blocks to rod specific communication protocols. These are indicated being Application Code Changes.

When you are ready to migrate the controller logic and regulatory predomination, in those whole now supervisory functions, you may want to make headway using the PLC now a multiplexer, to conserve I / O reputation service. Tragedy and Industrial Ethernet protocols abutment this preference. I / O addresses are assigned to internal PLC memory registers, which stir up 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.