MICRO-EPSILON IF2035-PROFINET Operating Instructions Manual page 28

Initial Operation
The write and read commands, see
IF2035 is executed first. IF2035 forwards the command to the sensor. IF2035 immediately notes the sensor answer in a buffer. On the
SPS RDREC is executed and thus the last command and the answer buffer are read back at the same time; the answer from IF2035 is
saved in the RECORD buffer.
Fetch answer, see Fig. 14.
This chronology is a reaction to the prior write command, see
RDREC_DB
REQ := 1 0
ID := 273
INDEX := 0x2600
LEN := 12
RECORD =>
VALID =>
BUSY =>
ERROR =>
Status/Result Output
STATUS =>
LEN =>
Fig. 14 SPS read command
IF2035-PROFINET
14, belong together. The write command WRREC that is used to send the command to the
Fig.
Enable-Flag
HW-ID
Objekt Index
Data Length
'L' 'A' 'S' 'E' 'R' 'P'
Fig. 13.
'O' 'W' 0x20 'O' 'N' 0x0A
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