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Appendix
Product manual | Version: 2.0.0
121
8DIO FLD EC DC 24V 2.0A
Offset
Parametername
Type
Value
Description
4
IndexOffset
Unsigned32
see below IndexOffset of the data to be written. Con-
tains index and subindex of the IO-Link ob-
ject. Structured according to the following
table.
8
Length
Unsigned32
Length of the data to be written (in bytes).
12
Data
Data for the ISDU write request (n bytes).
The data is stored in IndexOffset as follows:
Table 92: Structure of the IndexOffset in the AoE Data Area for an ISDU Write Request (AoE Write Request)
Offset
Parametername
Type
Value
Description
4
(IO-Link index)
Unsigned16
0x0000 ...
0x7FFF
Object index of the IO-Link device to be
written to
6
–
Unsigned8
0x00
Fixed value
7
(IO-Link subindex)
Unsigned8
0x00 ...
0xFF
Object subindex of the IO-Link device to be
written to.
The following figure shows the structure of the AoE header and AoE data area of the
ISDU write service.
Figure 44: Structure of the AoE Header and AoE Data Area for the ISDU Write Service
(2) AoE Write Response: Response from the ISDU Write Service
The EtherCAT master receives the AoE write response (number (2) in figure “ISDU Write
Process (EtherCAT)”).
AoE Write Response: Structure of the AoE Data Area (in Case of Success: ADS
Return Code Equals 0)
If the
Result
parameter (offset 0) in the AoE data area of the response packet has the
value 0 (ERR_NOERROR), then the ISDU write request has been executed successfully,
and the user data has been written to the addressed object of the IO-Link device.
The response has the following structure: