Beckhoff EPP3504-0023 Short Manual page 64

Commissioning
• C: a ReadRequest must be appended for the intended read
• D: as ADS index, the value 0xF302 for the CoE area
• E: composed as ADS offset with eight digits
• first the CoE index, here 0x8001
• then the subindex, here 0x0101 so 257
0...0x00FF would be the regular subindices :01 to :255 in the CoE
0x0100 is a CompleteAccess including :00, so it returns the size information that is in :00 with (4 bytes)
0x0101 is a CompleteAccess without the value in :00
• F: the read target must be specified here, e.g. as INT or WORD;
after successful "transfer" in
• G: are the read data, here the complete 0x8001 content
In this way all 160 bytes (40 coefficients) can be read in one go.
The byte stream (BLOP, "binary large object"):
[40 83 20 00 00 00 00 40...] is then to be read inverted:
- Subindex 01: 0x00 20 83 40 = 2130752
- Subindex 02: 0x40 00 00 00 = 1073741824
- ...
Which corresponds exactly to the values from figure above "Filter coefficients nos. 1 to 12 of channel 1
in CoE-Online of an ELM3602 EtherCAT Terminal". The values can thus be further processed using a
spreadsheet program and, if necessary, incorporated into a self-generated Startup.xml.
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Version: 1.2 EPP3504-0023