2

The Hot Standby CPU Redundancy system uses a single Genius bus and requires one GBC module in the Primary PLC and one in the Secondary PLC; however there can be multiple Genius busses configured in this manner in a system. The GBCs in the Primary PLC are assigned SBA 31, and the GBCs in the Secondary PLC are assigned SBA 30. Data from SBA 31 in the Primary PLC is the ºpreferredº data. The Primary PLC is normally the active unit in the redundancy system.

In a redundancy system the GBCs must be configured for ºRED CTRLº redundancy. All of the Genius devices on the Genius bus must also be configured for ºRedundancyº

The bus can have up to 30 Genius devices connected to it, with one of the SBAs reserved for the Hand-Held Monitor. Any type of Genius I/O block may be connected to this bus. A Genius I/O device will use the output data received from SBA 31 in preference to data from SBA 30. If the active and backup units switch roles, the GBC will then use the output data from SBA 30.

As a safety feature, a watchdog timer protects each Genius I/O link. This timer is periodically reset by the GBC software, Should it ever expire, the microcontroller on the board ceases functioning and the Channel OK LED turns off. If this happens in a CPU Redundancy system, the other GBC will then drive the Genius I/O blocks The cause of the link failure must be determined to re-establish communications.

a42985

Genius Bus Controller User Features

 

A Genius Bus Controller can be installed in any slot in rack 0, except

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

for slot 1 which is reserved for the CPU module. It can be installed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODEL 70

 

in any slot in an expansion rack, except slot 1 which must contain a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BEM 731

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODULE OK

 

Bus Receiver Module.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHANNEL 1 OK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOT USED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON = OK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HAND HELD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MONITOR

 

LED Status Indicators

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHANNEL 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODULE FUNCTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The GBC has three LEDs located at the top of the board: one as an

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GENIUS BUS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SERIES 90±70

 

indicator of the state of the board, and one to indicate the state of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTROLLER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

( 1 CHANNEL )

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the Genius I/O link. When the board is functionally properly, the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Removal of terminal

 

 

top two LEDs are ON (third LED currently not used). They are

 

 

 

 

 

 

 

 

 

 

 

 

 

 

block breaks bus if

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

external jumpers are

 

 

either blinking or OFF to indicate special or failure conditions. If,

 

 

 

 

 

 

 

 

 

 

 

not applied as shown

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHANNEL 1

 

 

 

 

 

 

 

 

 

 

 

 

after the power-up diagnostics routine has been completed, all LEDs

 

 

 

 

 

 

 

 

 

 

 

SER 1

 

 

 

 

 

 

SER 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

are OFF, this is an indication that a board failure has been detected

 

 

 

 

 

 

 

 

 

 

 

SER 2

 

 

 

 

 

 

SER 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and the board must be replaced.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHIELD

 

 

 

 

 

 

SHIELD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUT

 

 

 

 

 

 

IN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Module OK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

N

 

The top LED, labeled OK, indicates the health of the GBC. It is ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

N

 

when the board has successfully completed the power-up

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODULE

 

 

 

 

 

 

 

diagnostics. If the power-up diagnostics detects a failure or if the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC697BEM731C

 

board fails during operation, the LED will be OFF. The LED blinks

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LABEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

44A726758±11

 

during the power-up diagnostics and when the GBC is installed in

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

a slot different from the slot specified by the configuration

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

information downloaded from the programmer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GENIUS BUS CONTROLLER

 

 

 

GFK-0827

Chapter 2 System Components

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

25

 

 

 

 

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State Industries GFK-0827 manual Genius Bus Controller User Features