State Industries GFK-0827 manual Racks, GBC Connectors

2

CH 1 OK

The CH 1 OK LED is the middle LED. It operates identical to the Module OK LED in that it is ON after the board has successfully completed the power-up diagnostics and OFF if a failure has been detected during the power-up diagnostics, or if its bus or bus controller fails while the CPU is running (even in the STOP mode). If the failure is a bus controller failure, the LED will remain permanently off. If it is a bus failure, such as a broken wire or excessive bus errors, the LED remains off until the failure condition is corrected.

GBC Connectors

A GBC has two connectors. Directly below the LED is a dedicated nine-pin connector for connection to the Hand-Held Monitor. The actual bus connections are made through a 12 point removable terminal board. Six of these terminals are used for connection to the Genius I/O channel. The GBC may be located on either end or in the middle of the bus.

PRIMARY UNIT

P	C B	R	G G	G
S	P T	C	B B	B
	U M M C C			C

	SECONDARY UNIT		a47007
P	C B R G G G
S	P T C B B	B
	U M M C C	C

31 31 31

30 30 30

Genius Bus

Genius Bus

Genius Bus

Genius Devices

Genius Devices

Genius Devices

Figure 7. Example of Multiple Genius Busses in a Hot Standby CPU Redundancy System

Racks

The standard series 90-70 I/O racks may be used to contain the modules in a Hot

Standby CPU Redundancy System.. These racks include the following:

HIC697CHS750, 5-slot rear mount;

HIC697CHS790, 9-slot rear mount;

HIC697CHS791, 9-slot front mount.

Note

Please note that he Series 90-70 VME Integrator racks (IC697CHS782 and IC697CHS783) are not supported by this release of the Hot Standby CPU Redundancy product.

For detailed information on the Series 90-70 I/O racks, refer to GFK±0262, the Series 90-70 Programmable Controller Installation Manual.

26 Series 90-70 Hot Standby CPU Redundancy User's Guide ± December 1993 GFK-0827