Beckhoff EL6631-0010 - Shared Device

Commissioning
EL6631-0010 31Version: 3.4.0
Table of PROFINET RECORD DATA represented on ADS
PROFINET Length in
bytes
Comment ADS
- String AMS NET ID of the PROFINET
device
AMSNETID
- 2 0xFFFF
When the virtual interface is used,
the port number is to be taken
from the System Manager.
Port
Read/Write 2 0 - Read
1 - Write
Read - ReadIndication
Write - WriteIndication
Number of AR 2 0x0000 -
API
Application Process Identifier
4 0x00000000 -
Slot 2 Slot number
0x0000-0x7FFF
IndexOffset High Word
SubSlot 2 SubSlot number
0x0000-0x8FFF
IndexOffset Low Word
Record Data Index 2 0x0000-0x1FFF IndexGroup Low Word
- 2 0x8000 IndexGroup High Word
Record Data Length 2 to “0” to read LENGTH
Record Data Transfer
Sequence
2 consecutive number -
Record Data Length of Aligned 2 can be zero -
Example for reading data; the PROFINET controller wants to read data from a Beckhoff device via the record
data. In this example, all the RecIndex values are accepted, and will return the same data - 10 bytes that are
located in the "Data" data array.
CASEiOF
0:ADSREADIND(
CLEAR:=FALSE,
VALID=>,
NETID=>,
PORT=>,
INVOKEID=>,
IDXGRP=>,
IDXOFFS=>,
LENGTH=>);
IFADSREADIND.VALIDTHEN
IdxGroup:=ADSREADIND.IDXGRP;
IdxOffset:=ADSREADIND.IDXOFFS;
i:=10;
END_IF
10:ADSREADRES(
NETID:=ADSREADIND.NETID,
PORT:=ADSREADIND.PORT,
INVOKEID:=ADSREADIND.INVOKEID,
RESULT:=0,
LEN:=10,
DATAADDR:=ADR(Data),
RESPOND:=TRUE);
i:=20;
ADSREADIND(CLEAR:=TRUE);
20:i:=0;
ADSREADRES(RESPOND:=FALSE);
END_CASE
4.1.3 Shared Device
The ProfiNET feature "Shared Device" is supported by the EL6631-0010, by the TwinCAT Supplement from
version TC211 22.xx (= TC2 R3).
Shared Device features a function that allows two controllers to simultaneously access one device and, if
applicable, the same process data image.