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FM 351 Positioning Function Module
EWA 4NEB 720 6001-02
6.4.2 FC ACT_DAT
With the FC ACT_DAT you read the basic operating data or the service data
from the FM 351. The FC carries out the following functions:
Reading of the data from the FM 351 and entry in the channel DB:
– Basic operating data in the data area OPERATING DATA.
– Service data in the data area SERVICE DATA.
Reading of the check-back signals (for example, actual value). The read
values are placed in the channel DB by the FC.
Calling in LAD Representation Calling in STL Representation
FC ACT_DAT
RET_VAL
EN ENO
SL_OP_SV
DB_NO
IN_ADAT
CALL ACT_DAT(
DB_NO :=,
SL_OP_SV :=,
RET_VAL :=,
IN_ADAT :=);
Take note of the following requirements which must be satisfied for calling
the FC ACT_DAT:
All the requirements of Chapter 6.4 must be satisfied.
The following table describes the parameters of the function block FC
ACT_DAT.
Name Data Type P Type Meaning
DB_NO BLOCK_DB I Channel DB number.
RET_VAL INT O Return code of the SFC RD_REC.
SL_OP_SV BOOL I Selection of the data which is to be read;
TRUE - Service data.
FALSE - Basic operating data.
IN_ADAT BOOL I/O Start: Read service or operating data;
TRUE - Data transfer is enabled.
FALSE - When the job has been carried out without error.
Parameter types: I = Input Parameter; O = Output Parameter; I/O = In/Out Parameter (start parameter).
Task
Calling Methods
Requirements
Parameter
Description
Programming the FM 351
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