Siemens SIMATIC FM 453, Manual

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6-2
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
The following prerequisites must be fulfilled in order to control the FM 453
from your user program:
S
You have installed the software on your programming device/PC, as de-
scribed in Section 5.1.
S
The link between the programming device/PC and the S7-400 CPU must
already be set up (see Figure 4-1).
Proceed as follows:
1. Generate a data block in STEP 7 (DB 1).
2. Open DB 1 and select the property “mit zugeordneten anwenderspezifis-
chen Datentyp”.
Result: UDT 1 (user-defined data type)
is offered
3. Click UDT 1
Result: You have created the user DB (DB 1).
4. Load this user DB and save it in the CPU.
5. You can use “Parameterize FM 453” to fill the user DB in the CPU with
data.
You must create a user DB for each channel.
The following table gives you a general view of the function-block package
(FCs) for the FM 453.
Table 6-1 Technology Functions for the FM 453
Function
Block No.
Function
Block Name
Significance
FC 1 INIT_DB Initialize user DB
FC 2 MODE_WR Control operating modes and process write jobs
FC 3 RD_COM Process read jobs cyclically
FC 4 DIAG_RD Read diagnostic interrupt data in OB 82
FC 5 MSRMENT Read measured values
FC 6 DIAG_INF Read diagnostic interrupt data in OB 1
Note
You can change the FC number for your project. The number is changed in
the SIMATIC Manager by renaming the FC in your project with a free num-
ber. These changes should be entered in the symbol table at the same time.
Prerequisites
Creating the User
DB
Function Blocks
Programming the FM 453