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224
840 USE 106 00 January 2003
H
health message, 180
Hot Standby
Theory of Operation, 164
Hot Standby kit, 24
Hot Standby status register, 78, 132
Hot Standby system
cable diagrams, 58
distance between modules, 56
installation, 61
normal operation, 108
planning guidelines, 56
startup, 104
timing, 173
topology, 166
hot swapping, 193
HSBY, 13
I
IEC heap, 44, 128
IEC HSBY, 28
IEC logic, 114
IP address, 128
K
keyswitch, 20
override, 119
L
ladder logic, 72
application program, 32
LED display
during normal operation, 105
recognizing errors, 181
logic scan, 32, 46
M
MAC address, 128
maximum IEC heap size, 44
N
nontransfer area of state RAM
command register must not be placed in
the nontransfer area, 76
placing registers, 128
O
off line mode, 21
P
primary controller, 16, 28
program data, 44
program update, 194, 200
R
reduce scan time, 36
redundant power supply, 181
reference data editor, 121
remote I/O network
cable requirements, 56
diagrams, 58
hardware required, 58
reverse transfer registers, 82
run mode, 22
run time confidence tests, 180
S
scan time, 142
self-terminating F adapters
required in RIO network, 58
slide switch, 20
standby controller, 16, 28
failure, 108
Standby LED, 105
startup error, 184
state RAM, 30
IEC HSBY, 46
stages of transfer, 32
state RAM transfer
automatic, 108