Siemens SIMATIC FM 353 - The POS_INIT (FC 0) Block − Initialization

Programming the Technological Functions
6-10
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
6.3.2 The POS_INIT (FC 0) block − Initialization
Function
Use the POS_INIT block to initialize specific areas of your AW-DB.
Call options
The POS_INIT block must be called once in the start-up OB 100 and in OB 86 for
”distributed configuration”.
Call in LAD representation
(ladder diagram)
Call in STL representation
(statement list)
EN ENO
POS_INIT
LADDR
CH_NO
DB_NO RET_VA
CALL POS_INIT
DB_NO :=
CH_NO :=
LADDR :=
Parameters
The Table below lists the parameters for this block.
Name Data
Type
Param.
Type
Description
DB_NO INT I Data block number
CH_NO BYTE I Number of the axis:
0 − Only one channel/axis
on the module
1 − First channel/axis on the module
2...255 − Illegal
Same mean-
ing internally
LADDR INT I S Logical base address of the module; use entry from
“HW-CONFIG”, → “Properties”, → “Address” (see Sec-
tion 5.2)
S 0 − No entry of addresses in the user DB
Parameter types: I = input parameter