TR-Electronic 65 Serie Montageanleitung Seite 167

Example:
To perform the Preset, with the aid of the System-Function-Block "SFB53" (WRREC),
an acyclic write service must be executed. Therefore, no more cyclical output data are
needed to provide a position value.
Figure 9: Preset execution by means of the CPU 315-2 PN/DP and SFB53
Function call, example:
CALL „WRREC" , DB53
REQ
ID
INDEX
LEN
DONE
BUSY
ERROR
STATUS
RECORD

For ID, here 0 is specified. This corresponds to the logical address of the
measuring system (address of the input data in HEX)

Index = 2 means PRESET function

The variable encoder contains the desired value
Further information about the SFB53 can be taken from the system documentation of
the control unit.
6.7.1 Switch-on / Switch-off the Data status
If the Preset adjustment function is executed the cyclic Real-Time-Data are set to
"BAD", see chapter "Data status" on page 124. When the procedure was finished
completely, the data status is reset to "GOOD". If a changing of the status is
undesired, this function can be switched off by setting the two most significant bits:
Output double word ODx
Byte
Bit
Data
ON
OFF
Printed in the Federal Republic of Germany
04/25/2022
:=TRUE
:=DW#16#0
:=2
:=4
:=
:=
:=
:=
:=#encoder
x+0
31 – 24
31 30 29 24
2 -2 2 - 2
00 xxxxxx
11 xxxxxx
Preset adjustment value (binary)
TR-ECE-BA-DGB-0063 v15
x+1
23 – 16 15 – 8
23 16 15
2 - 2 2
xxxxxxxx xxxxxxxx
xxxxxxxx xxxxxxxx
x+2 x+3
7 – 0
8 7
- 2 2 - 2
xxxxxxxx
xxxxxxxx
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