Electronic Marshalling
Accommodate Late Changes by Using Electronic Marshalling

Late changes do not need to be accompanied by headaches related to engineering and managing I/O automation subsystems. Traditionally, I/O hardware and software have been so tightly integrated during automation projects that even simple I/O changes might cause major project delays.

Eliminate the problems by switching to Electronic Marshalling — a new way of providing I/O on demand that allows you to add I/O anywhere in the plant when and where you need it. When project scope increases, your design team has the flexibility in their control strategy design and implementation to incorporate the new project scope without affecting the project schedule.

Marshall I/O Anywhere
With Electronic Marshalling, each terminal block has a single channel CHARacterization Module (CHARM) that allows any signal type of field wiring to be terminated in any location. Field wires are terminated on terminal strips without the traditional cross-wiring from the marshalling panel to I/O cards. Each I/O channel is mapped to the appropriate controller automatically through the DeltaV system software.

Adapt to Change Easily
Electronic Marshalling uses CHARMs as I/O terminators that can be individually replaced without affecting other channels. Each CHARM acts as a fuse to prevent failures in other CHARMs.

Do Not Assign I/O … Yet
Electronic Marshalling offers flexibility that makes late I/O changes much easier to handle. There is no need to assign I/O early in the installation because any I/O can be assign to any controller. Adding a controller does not cause major re-engineering effort. And all HART I/O are automatically sensed and bound by the DeltaV distributed control system.

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