GE IS420UCSCH1A Mark VIe Controller

GE IS420UCSCH1A Mark VIe Controller

Functional Description

The IS420UCSCH1A controller is available in the standard three I/O port configuration and a 10 I/O port

configuration. The 10 I/O port configuration, UCECH1A, consists of a standard UCSCH1A controller coupled

with a seven I/O port expansion board.

The UCSCH1A Embedded PROFINET® Gateway (Embedded PPNG) module allows communication with

PROFINET I/O devices, including RSTi-EP Slice I/O.

The UCSCH1A controller is loaded with software specific to its application. As a turbine or balance of plant

(BoP) controller, it runs the Mark VIe firmware and applications and utilizes IONet interfaces. IONet is a

private special-purpose Ethernet that only supports Mark controls I/O packs and controllers. IEEE 1588

protocol is used through the IONet interfaces to synchronize the clock of the I/O modules and controllers to

within ±100 microseconds. External data is transferred to and from the control system database in the

controller over the IONet interfaces. This includes process inputs/outputs to the I/O modules. Unlike

traditional controllers where I/O is on a backplane, the UCSC controller does not host any application I/O. In

a redundant set, all I/O networks are attached to each controller, providing them with all input data. This

hardware and software architecture guarantees that no single point of application input is lost if a controller

is powered down for maintenance or repair.

Technical Specifications