Siemens SIMATIC S7-400H System Manual page 6

Fault-tolerant systems
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13.3
Failure and replacement of components of the distributed I/Os ............................................... 196
13.3.1
Failure and replacement of a PROFIBUS-DP master .............................................................. 196
13.3.2
13.3.3
Failure and replacement of a PROFIBUS-DP slave ................................................................. 197
13.3.4
Failure and replacement of PROFIBUS-DP cables .................................................................. 198
14
System modifications in operation ......................................................................................................... 199
14.1
System modifications in operation ............................................................................................ 199
14.2
Possible hardware modifications .............................................................................................. 200
14.3
Adding components in PCS 7 ................................................................................................... 204
14.3.1
PCS 7, step 1: Modification of hardware................................................................................... 205
14.3.2
PCS 7, Step 2: Offline modification of the hardware configuration........................................... 205
14.3.3
PCS 7, Step 3: Stopping the standby CPU............................................................................... 206
14.3.4
14.3.5
PCS 7, Step 5: Switch to CPU with modified configuration ...................................................... 207
14.3.6
PCS 7, Step 6: Transition to redundant state ........................................................................... 208
14.3.7
PCS 7, Step 7: Editing and downloading the user program ..................................................... 209
14.3.8
Adding interface modules in PCS 7 .......................................................................................... 210
14.4
Removing components in PCS 7 .............................................................................................. 211
14.4.1
PCS 7, step I: Offline modification of the hardware configuration ............................................ 212
14.4.2
PCS 7, step II: Editing and downloading the user program ...................................................... 213
14.4.3
PCS 7, step III: Stopping the standby CPU .............................................................................. 214
14.4.4
14.4.5
PCS 7, step V: Switch to CPU with modified configuration ...................................................... 215
14.4.6
PCS 7, step VI: Transition to redundant state........................................................................... 216
14.4.7
PCS 7, step VII: Modification of hardware ................................................................................ 217
14.4.8
Removing interface modules in PCS 7 ..................................................................................... 218
14.5
Adding components in STEP 7 ................................................................................................. 219
14.5.1
STEP 7, step 1: Adding hardware............................................................................................. 220
14.5.2
STEP 7, step 2: Offline modification of the hardware configuration ......................................... 221
14.5.3
STEP 7, step 3: Expanding and downloading OBs .................................................................. 221
14.5.4
STEP 7, step 4: Stopping the standby CPU ............................................................................. 222
14.5.5
14.5.6
STEP 7, step 6: Switch to CPU with modified configuration..................................................... 223
14.5.7
STEP 7, step 7: Transition to redundant state .......................................................................... 224
14.5.8
STEP 7, step 8: Editing and downloading the user program .................................................... 225
14.5.9
Adding interface modules in STEP 7 ........................................................................................ 226
14.6
Removing components in STEP 7 ............................................................................................ 227
14.6.1
STEP 7, step I: Offline modification of the hardware configuration .......................................... 228
14.6.2
STEP 7, step II: Editing and downloading the user program .................................................... 228
14.6.3
STEP 7, step III: Stopping the standby CPU ............................................................................ 229
14.6.4
14.6.5
STEP 7, step V: Switch to CPU with modified configuration .................................................... 230
14.6.6
STEP 7, step VI: Transition to redundant state......................................................................... 231
14.6.7
STEP 7, step VII: Modification of hardware .............................................................................. 232
14.6.8
STEP 7, step VIII: Editing and downloading organization blocks ............................................. 232
14.6.9
Removing interface modules in STEP 7 ................................................................................... 233
14.7
Editing CPU parameters ........................................................................................................... 234
14.7.1
Editing CPU parameters ........................................................................................................... 234
14.7.2
Step A: Editing CPU parameters offline.................................................................................... 235
14.7.3
Step B: Stopping the standby CPU........................................................................................... 236
14.7.4
Step C: Loading new hardware configuration in the standby CPU........................................... 236
14.7.5
Step D: Switch to CPU with modified configuration .................................................................. 237
14.7.6
Step E: Transition to redundant state ....................................................................................... 238
6
System Manual, 09/2007, A5E00267695-03
S7-400H

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