Index
224 840 USE 106 00 January 2003
Hhealth 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
IIEC heap, 44, 128
IEC HSBY, 28
IEC logic, 114
IP address, 128
Kkeyswitch, 20
override, 119
Lladder logic, 72
application program, 32
LED display
during normal operation, 105
recognizing errors, 181
logic scan, 32, 46
MMAC address, 128
maximum IEC heap size, 44
Nnontransfer area of state RAM
command register must not be placed in
the nontransfer area, 76
placing registers, 128
Ooff line mode, 21
Pprimary controller, 16, 28
program data, 44
program update, 194, 200
Rreduce 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
Sscan 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