INNPM12  Communication Interface Modules BAILEY

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Overview

Essential details：INNPM12  Communication Interface Modules BAILEY

Control Network, Cnet, is a high-speed data communication highway between nodes in the Symphony™ Enterprise Management and Control System. Cnet provides a data path among Harmony control units (HCU), human system interfaces (HSI), and computers. High system reliability and availability are key characteristics of this mission-critical communication network. Reliability is bolstered by redundant hardware and communication media in a way that the backup automatically takes over in the event of a fault in the primary. Extensive use of error checking and message acknowledgment assures accurate communication of critical process data.
Harmony rack communications encompasses various communication interfaces: Cnet-to-Cnet, Cnet-to-HCU, and Cnet-to-computer. Communication modules, in certain combinations, create the various Cnet communication interfaces.

INNPM12

OVERVIEW
INFI-NET is a unidirectional, high-speed serial data highway shared by all INFI 90 OPEN nodes. INFI-NET provides sophisticated interfaces for data exchange. This process control unit interface is made up of state-of-the-art INFI 90 OPEN modules.
INTENDED USER
Personnel installing, operating or maintaining the process control unit interface should read this instruction before performing any installation, operation or maintenance procedures. Installation requires an engineer or technician with experience handling electronic circuitry and who is familiar with communication networks.
PROCESS CONTROL UNIT INTERFACE DESCRIPTION
The process control unit interface is made up of the INNIS01 Network Interface Slave Module (NIS) and INNPM11 Network Processing Module (NPM). Through this interface the process control unit has access to INFI-NET. At the same time the NPM module communicates with the control modules via the Controlway.
The process control unit interface can support hardware redundancy (refer to Figure 1-1). In a redundant configuration, there are two NIS modules and two NPM modules. One pair of modules is the primary. If the primary modules fail, the backup modules come on-line. Redundant data highway communication capability is a standard feature.

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