Siemens SIMATIC S7-300 Manual page 289

11.2.4 Message in data block
Overview
Please note the following for direct access to DBs (e.g. using an OP).
If data errors/machine data errors/traversing program errors are detected
when the parameters are written to the data block (e.g. in the parameteriza-
tion tool), an error message is stored in the data block. The error-specifica-
tion is stored in the form of an error number in the corresponding data block
(see error list in Table 11-8
block is written to until the cause has been eliminated.
It is recommended to scan the error message after every write operation.
11.2.5 Viewing the diagnostic buffer (PG/PC)
Overview
The last five error messages are stored in the diagnostic buffer.
There are two ways of proceeding:
1. In the S7 SIMATIC Manager select the menu File Open Accessible
2. In the Accessible Nodes window, select the MPI address of your module.
3. You can view the diagnostic buffer in the menu Target system Module
or
1. Open your project in the S7 SIMATIC Manager.
2. Select the menu View Online.
3. In the dialog box, select the FM 354 and the associated program.
4. You can view the diagnostic buffer in the menu Target system Module
FM 354 Servo Drive Positioning Module
. The error message occurs each time the data
)
Nodes.
status.
status
Troubleshooting
11-9