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91
GFK-0827
Genius bus, multiple, 26
Genius I/O, bus controller, 24
Genius I/O system, 4
Grounding, programmer, 9
Guidelines for run disabled mode, 66
H
Help text, redundancy error codes, 74
Hot standby CPU redundancy, 85
Hot standby cpu redundancy
basic description of, 1
benefits of, 3
features of, 3
I/O systems
genius I/O, 4
local I/O, 4
system configuration, 6
Hot standby redundancy control strategy,
58
I
I/O bus signal termination, 24
I/O bus terminator plug, 24
I/O system configuration, 28
Incompatible configurations, 56
K
Keyswitch, memory protect, 17
L
LEDs for redundancy communications
module, 7
Link failure, communications, 82
Links, losing, 75
Lithium battery for memory backup, 18
Local I/O configuration, example of, 5
Local I/O system, 4
Lockstep of active and standby units, 2
Logicmaster 90 configuration, require-
ments, 28
Logicmaster 90 connection, 31
Logicmaster, serial COM port version, 18
Logicmaster, WSI version, 18
Losing links, 75
M
Maskable fault group actions, 78
Maskable fault group descriptions, 77
Memory protect keyswitch, 17
Memory, expansion, 18 , 39
Memory, flash, 64
Mode selection, 16
Mode, operating, 16
Mode, run disabled, 65
N
Non-maskable fault group descriptions,
79
Normal sweep mode configuration, 34
Normal system operation, 55
O
On-line programming, 9
On-line repair, 9 , 80
central processor unit, 81
genius blocks, 83
genius bus, 83
genius bus controller, 82
power supply, 81
procedures, 80
racks, 81
recommendations, 80
redundancy communications module,
81
terminated parallel bus cable, 81
Operating mode, selection of, 16
Operating modes, valid
run w/ outputs enabled, 16
run w/outputs disabled, 16
stop, 16