IO-Link Master with EtherNet/IP Interface StandardLine 4 Ports IP 65 / IP 66 / IP 67
96
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Read_ISDU
34323
With Read_ISDU, parameters of a connected IO-Link device can be read.
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Request
34337
CIP Attribute determines the IO-Link port to which the IO-Link device is connected. The area CIP User
Specific Service Data contains the IO-Link index and the IO-Link sub-index of the IO-Link object
whose value is to be read:
CIP format
Data type MSG Config
IO-Link mapping
CIP Class ID
UINT
0x80
IO-Link acyclic access
CIP Instance ID
UINT
0x01
IO-Link master
CIP Attributes
USINT
0x01...0x04
Port number
CIP Service code ID
USINT
0x4B
Request "Read_ISDU"
CIP User specific service data
UINT
0x0000...0xFFFF
IO-Link ISDU object index
USINT
0x00...0xFF
IO-Link ISDU object sub-index
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Response
34326
Positive response
If the service has been executed successfully (CIP Error Code = 0), the read data are returned bit by
bit (CIP User Specific Service Data). The answer has the following format:
CIP format
Data type MSG Config
IO-Link mapping
CIP Class ID
UINT
0x80
IO-Link acyclic access
CIP Instance ID
UINT
0x01
IO-Link master
CIP Attributes
USINT
0x01...0x04
Port number
CIP Service Code ID
USINT
0x4C
Response "Read_ISDU"
CIP Error Code
USINT
0x00
--
CIP Extended Error Code
USINT
0x00
--
CIP User Specific Service Data
USINT
0x00...0xFF
Data (byte 0)
USINT
0x00...0xFF
Data (byte 1)
...
...
USINT
0x00...0xFF
Data (byte n)
The read data is in the IO-Link format. If necessary, the user needs to adapt the byte
arrangement of the read data to the CIP format.
