Adding Interface Modules In Step 7 - Siemens SIMATIC S7-400H System Manual
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17.5.10
Adding interface modules in STEP 7
Always switch off power before you install the IM460 and IM461 interface modules, external
CP443-5 Extended DP master interface module and their connecting cables.
Always switch off power to an entire subsystem. To ensure that this does not influence the
process, always set the subsystem to STOP before you do so.
Procedure
1. Change the hardware configuration offline (see section STEP 7, step 2: Offline
2. Expand and download the organization blocks (see section STEP 7, step 3: Expanding
3. Stop the reserve CPU (see section STEP 7, step 4: Stopping the reserve CPU
4. Download the new hardware configuration to the reserve CPU (see section STEP 7, step
5. Proceed as follows to expand the subsystem of the present reserve CPU:
6. Switch to CPU with altered configuration (see section STEP 7, step 6: Switch to CPU with
7. Proceed as follows to expand the subsystem of the original master CPU (currently in
S7-400H
System Manual, 03/2012, A5E00267695-11
modification of the hardware configuration (Page 305))
and downloading OBs (Page 305))
(Page 306))
5: Loading a new hardware configuration in the reserve CPU (Page 306))
– Switch off the power supply of the reserve subsystem.
– Insert the new IM460 into the central unit, then establish the link to a new expansion
unit.
or
– Add a new expansion unit to an existing chain.
or
– Plug in the new external DP master interface, and set up a new DP master system.
– Switch on the power supply of the reserve subsystem again.
modified configuration (Page 307))
STOP mode):
– Switch off the power supply of the reserve subsystem.
– Insert the new IM460 into the central unit, then establish the link to a new expansion
unit.
or
– Add a new expansion unit to an existing chain.
or
– Plug in the new external DP master interface, and set up a new DP master system.
– Switch on the power supply of the reserve subsystem again.
System modifications during operation
17.5 Adding components in STEP 7
311
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