Schneider Electric 840 USE 106 0 manual Index

Index

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

224 840 USE 106 00 January 2003