Automationdirect.com Stride SIOL-EI8B - Writing an IO-Link Device Index

SIOL-EI8B-USER-M
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9.3.2. Writing an IO-Link device index
Write ISDU Request
Writing an IO-Link device index
➔ To write to the index of a connected IO-Link device, use the EtherNet/IP service Write_ISDU 76 (0x4C).
➔ Send the service to the correct attribute of the IO-Link device parameter object (class code 0x83).
➔ An attribute represents the IO-Link port to which the IO-Link device is connected.
Structure of a write ISDU service request
Structure Of A Write ISDU Service Request
Name Value Type Description
CIP Service 76 (0x4C) - ISDU write service
CIP Class 131 (0x83) - IO-Link Device Parameter Object
CIP Instance
1 ... Number of
available IO-Link Ports
- Addresses the IO-Link Port to which the IO-Link device is connected.
CIP Data
Index UINT IO-Link ISDU object index
Subindex USINT IO-Link ISDU object subindex
Data ARRAY of BYTE
Data that shall be written to IO-Link device.
Maximum number of bytes: 232
Write ISDU Response
Positive Response (CIP Status in service response == 0)
The positive response to this service does not hold any CIP data.
Positive Response (CIP Status In Service Response == 0)
Name Value Type Description
CIP Service 76 (0x4C) - ISDU write service
CIP Class 131 (0x83) - IO-Link Device Parameter Object
CIP Instance
1 ... Number of
available IO-Link Ports
- Addresses the IO-Link Port to which the IO-Link device is connected.
CIP Data The positive response to this service does not hold any CIP Data (Number of bytes: 0).
Negative Response (CIP Status in service response != 0)
Negative Response (CIP Status In Service Response != 0)
Name Value Type Description
CIP Service 76 (0x4C) - ISDU read service
CIP Class 131 (0x83) - IO-Link Device Parameter Object
CIP Instance
1 ... Number of
available IO-Link Ports
- Addresses the IO-Link Port to which the IO-Link device is connected.
CIP Data
The structure of the
error codes can be
found in Section 9.3.3,
“CIP status codes”
UINT IO-Link Master Error
USINT IO-Link Device Error
USINT IO-Link Device Additional Error Code