Siemens SIMATIC S7-400H System Manual page 372

Index
D
Data consistency, 73
Depassivation, 148
Determining memory requirements, 56
Diagnostic addresses for PROFIBUS, 71
Diagnostic buffer, 48
Diagnostics
Evaluating, 70
Diagnostics addresses, 71
Digital output
Fault-tolerant, 140, 147
Diode circuit, 147
Direct current measurement, 145
Discrepancy
Digital input modules, 138
Discrepancy time, 138, 141
Documentation, 33
Documentation package, 16
DP interface, 58
DP master
Diagnostics using LEDs, 69
Diagnostics with STEP 7, 69
DP master system
Startup, 67
DPV1, 67
DPV1 and EN 50170, 68
DPV1 master, 68
DPV1 mode, 68
DPV1 slaves, 68
E
EN 50170, 67
Encoder
Double redundant, 140
Error displays
All CPUs, 47
CPU 414<#106>4H, 48
CPU 417<#106>4H, 48
Error LEDs
Synchronization module, 251
Error messages, 44
Execution time
Cycle control, 265
Operating system, 265
Process image update, 262
User program, 261
Expanded memory configuration, 100
Expanding load memory, 54
External backup voltage, 42
External diodes, 141
EXTF, 47
372
F
Fail-safe, 21
Failure of a CPU, 38
Failure of a fiber-optic cable, 38
Failure of a power supply module, 38
Failure of a redundancy node, 24
Failure of components, 185
in central and expansion racks, 186
of distributed I/Os, 196
Fault-tolerant, 21
Fault-tolerant communication, 158
Fault-tolerant connections
Configuration, 162
Programming, 163, 169
Properties, 162
Fault-tolerant station, 179
FB 450 RED_IN, 131
FB 451 RED_OUT, 131
FB 452 RED_DIAG, 131
FB 453 RED_STATUS, 131
FC 450 RED_INIT, 131
FC 451 RED_DEPA, 131
Fiber-optic cables, 29
Cable pull-in, 253
Installation, 252
Replacement, 192
Selection, 254
Storage, 252
Finding your way
through the manual, 17
Firmware
Updating, 61
FLASH card, 54, 55
FRCE, 47
Function modules, 333
Functional I/O redundancy, 131
H
H system
Starting, 37
Hardware
Components, 28
Configuration, 37
Configuring, 180
Installation, 36
HOLD, 87
Hotline, 18
System Manual, 09/2007, A5E00267695-03
S7-400H