MD‑SI‑DP1 Communication
‑218‑
Note that before running an organization block, you need to download data blocks
(above the function block, DB1 and DB2 in this example) to the PLC. Otherwise, an
error indicating that the DB blocks are not loaded will be reported.
SFB53 is used to perform operations on the EEPROM. Therefore, the program is
required to invoke relevant operations when required and disable relevant operations
in time. As shown in the following figure, after the write operation is complete (M1.1 is
set to 1), the program is invoked to reset M1.0.
When SFB52 and SFB53 are executed, relevant blocks need to be invoked for multiple
times. Therefore, do not invoke them when single execution is required.
8.7.6 Diagnosis
You can use SFC13 in the program to obtain specific diagnosis information of each
slave, as shown in the following figure.
● REQ: Command enable. When this field is set to ON, diagnosis information reading
is initiated.
● LADDR: Configured diagnosis address of the PROFIBUS DP slave. The following
figure shows the actual value. For SFC13, the address must be specified in
hexadecimal.
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