Siemens SIMATIC S7-300 Manual page 84

Programming the FM 354
Chapter over-
view
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.1 FC INIT_DB (FC 1) – Initialize user DB
Task You can use FC INIT_DB to initialize specific areas of your user DB. To do
this, call FC INIT_DB once in the start–up organization block OB 100.
The FC performs the following actions:
1. Enters addressing values in the user DB
2. Deletes the following structures in the user DB
Call options
6-4
In Section
FC INIT_DB – Initialize user DB
FC MODE_WR – Control operating modes and process
write jobs
FC RD_COM – Process read jobs cyclically
Reading diagnostic information
FC MSRMENT – Read measured values
User data block
Example applications
Technical specifications
– FM address
– Offset address
– CONTROL_SIGNALS
– CHECKBACK_SIGNALS
– JOB_WR (write job)
– JOB_RD (read job)
Call in LAD notation
(ladder diagram)
FC INIT_DB
EN
DB_NO
CH_NO
LADDR
you will find
Call in STL notation
(statement list)
CALL INIT_DB(
DB_NO
ENO
CH_NO
LADDR
FM 354 Servo Drive Positioning Module
on page
6-4
6-6
6-13
6-17
6-22
6-25
6-41
6-45
:= ,
:= ,
:= );