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PDI subindex length

aFouraker
Long-established Member

PDI subindex length

How can the PDI channel be read/written with the CXA_S20 library when the subindex is limited to bytes while some of the supported IO has subindexes of word length? 

For example, the S20-SGI module has sub-index 0x0298 but the input to read/write through the CXA_s20 IH_S20ECATPDIRead/Write only supports byte lengths (limited to 0x00FF).

 

aFouraker_0-1633656162692.pngaFouraker_1-1633656176679.png

https://www.boschrexroth.com/en/web/xc/myrexroth/document-library/-/document_library/view_document/2... page 27.

3 REPLIES 3
CodeWasi
Established Member

Re: PDI subindex length

Hello !
we will contact you...

 

cc2go
Established Member

Re: PDI subindex length

The Subindex is just one Byte at the S20-EC-BK for the PDI Tunnel and it define the e.g. channel.

The mentioned parameter 0x0298 is the index.

2021-10-08_14h37_55.png

aFouraker
Long-established Member

Re: PDI subindex length

This was the issue. I guess I switched the 2 (index and sub-index) when I was reading it. Thanks!

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