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Maintenance
8.2
Replacing the C7
Introduction
Prerequisite
Removal
8
Installation
8-6
On-site repair of the C7 has not been provided for. For this reason, a
defective C7 must be replaced.
The following prerequisites must be met for replacing a C7:
Hardware
Programming device/PC with MPI interface module
PG/PC cable or PC/MPI cable
Development tools
STEP 7
ProTool
User software (stored outside the C7)
User configuration
User control program (if data from the C7 CPU can no longer be read).
Proceed as follows:
Mechanical removal takes place in the opposite order to the installation.
Connect a programming device/PC to the MPI.
Use STEP 7 to transfer the user program stored in the C7 CPU to a
programming device/PC.
If the C7 CPU is defective and the user program can no longer be
displayed, remove the C7 without any further safety measures.
The configuration loaded onto the C7 cannot be displayed. It must be
available on a programming device/PC.
As soon as you have a new C7, install it as follows:
1. The mechanical and electrical installation is as described in the manual.
2. Connect a programming device/PC to the MPI.
3. Perform a memory reset of the C7 as described.
4. Transfer the previously saved user program from the programming
device/PC with the relevant data to the C7 CPU (using STEP 7).
5. Load your configuration with ProTool into the C7.
6. Start the user program.
C7-626 / C7-626 DP Control Systems
C79000-G7076-C626-01
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