Adding Interface Modules In Step 7 - Siemens SIMATIC S7-400H System Manual

System modifications in operation
14.5 Adding components in STEP 7
14.5.9

Adding interface modules in STEP 7

Always switch off the 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 standby CPU (see section STEP 7, step 4: Stopping the standby CPU (Page 222))
4. Download the new hardware configuration to the standby CPU (see section STEP 7, step 5:
5. To expand the subsystem of the present standby CPU:
6. Switch to CPU with altered configuration (see section STEP 7, step 6: Switch to CPU with
7. To expand the subsystem of the original master CPU (currently in STOP mode):
8. Change to redundant mode (see section STEP 7, step 7: Transition to redundant state
9. Modify and download the user program (see section STEP 7, step 8: Editing and
226
modification of the hardware configuration (Page 221))
and downloading OBs (Page 221))
Loading new hardware configuration in the standby CPU (Page 222))
– Switch off power to the standby subsystem.
– Insert the new IM460 into the central unit and 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 install a new DP master system.
– Switch on the power to the standby subsystem again.
modified configuration (Page 223))
– Switch off power to the standby 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 install a new DP master system.
– Switch on the power to the standby subsystem again.
(Page 224))
downloading the user program (Page 225))
System Manual, 09/2007, A5E00267695-03
S7-400H