[etherlab-users] EL 4024 subindex discrepancy [SEC=UNOFFICIAL]

[LYNCH, Damien]

Hi,

When I run "ethercat pdos" on an EL4024 I get the output below. The subindexes for the analog output channels are 1. 

SM0: PhysAddr 0x1000, DefaultSize  128, ControlRegister 0x26, Enable 1
SM1: PhysAddr 0x1080, DefaultSize  128, ControlRegister 0x22, Enable 1
SM2: PhysAddr 0x1100, DefaultSize    8, ControlRegister 0x24, Enable 1
  RxPDO 0x1600 "RxPDO-Map OutputsCh.1"
    PDO entry 0x7000:01, 16 bit, "Analog output"
  RxPDO 0x1601 "RxPDO-Map OutputsCh.2"
    PDO entry 0x7010:01, 16 bit, "Analog output"
  RxPDO 0x1602 "RxPDO-Map OutputsCh.3"
    PDO entry 0x7020:01, 16 bit, "Analog output"
  RxPDO 0x1603 "RxPDO-Map OutputsCh.4"
    PDO entry 0x7030:01, 16 bit, "Analog output"
SM3: PhysAddr 0x1180, DefaultSize    0, ControlRegister 0x20, Enable 0

Should the subindexes not be 0x11? In the "Beckhoff EL4xxx.xml" file the EL4024 subindexes are 17. E.g.:

<RxPdo Fixed="1" Mandatory="1" Sm="2">
    <Index>#x1600</Index>
    <Name>AO Outputs Channel 1</Name>
    <Entry>
        <Index>#x7000</Index>
        <SubIndex>17</SubIndex>
        <BitLen>16</BitLen>
        <Name>Analog output</Name>
        <DataType DScale="0-20">INT</DataType>
    </Entry>
</RxPdo>

TwinCAT reports the subindexes as 17 as well. On top of this "ethercat sii_read" seems to indicate the subindexes are 0x11 as well, though I must admit I am not proficient at deciphering the SII.

Thanks,
Damien