Schneider Electric 840 USE 106 0 manual Select Component of Type Bool

Using a Quantum IEC Hot Standby System

Transfer Status The Section Hot Standby Transfer Status Byte can be read by an operator panel or

Byteby Data Acquisition System. The purpose of the byte is to provide feedback to the Application to indicate whether the Section Data is being transferred to the Standby controller. If a fault occurs, then the Primary Controller Application or the SCADA System will take appropriate measures to indicate a fault.

A fault could occur if:

the programmer disables the section from transferring

modifications are made to the sections but changes are not downloaded to both controllers. This would cause the primary and the standby sections to be

ldifferent.

the Standby controller is not present

In the example below, the section name is LD1. To access this in the Primary

Controller application you would use the variable LD1.hsbyState.

Select Component of Type BOOL

Components

LD1: SECT CTRL	OK
disable: BOOL
hsby State: BYTE	Cancel
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840 USE 106 00 January 2003 137