IFM Electronic AL1122 - Page 79

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ifm Operating Instructions IO-Link Master with EtherNet/IP interface StandardLine 8 Ports IP 65 / IP 67 (AL1122) 2017-05-31
Appendix
Response channel
8468
Byte
Content
4
Port no. (LSB)
5
Port no. (MSB)
6
Index (LSB)
7
Index (MSB)
8
Sub-index (LSB)
9
Sub-index (MSB)
10
Handshake
Command
11
Result
12
Length of the response data (number of bytes)
13
Data (byte 0) or diagnostic data
14
Data (byte 1)
...
...
44
Data (byte 31)
45
reserved
Legend:
Port no. (LSB)
Number of the IO-Link port (low byte)
 Port no. = 0xXXYY
 Port no. (LSB) = 0xYY
8 bits
0x01 = port X01
0x02 = port X02
...
0x08 = Port X08
Port no. (MSB)
Number of the IO-Link port (high byte)
 Port no. = 0xXXYY
 Port no. (MSB) = 0xXX
8 bits
0x00
Index (LSB)
Index of the IO-Link object (low byte)
 Index = 0xXXYY
 Index (LSB) = 0xYY
8 bits
0x00...0xFF
Index (MSB)
Index of the IO-Link object (high byte)
 Index = 0xXXYY
 Index (MSB) = 0xXX
8 bits
0x00...0xFF
Sub-index (LSB)
Sub-index of the IO-Link object (low byte)
 Sub-index = 0xXXYY
 Sub-index (LSB) = 0xYY
8 bits
0x00...0xFF
Sub-index
(MSB)
Sub-index of the IO-Link object (high byte)
 Sub-index = 0xXXYY
 Sub-index (MSB) = 0xXX
8 bits
0x00...0xFF
Handshake
Validity of the response data
1 bit
0x0 = invalid data
0x1 = data is invalid
Command
Command number
7 bits
0x01 = read
0x02 = write
Result
Status of the command processing
8 bits
0x00 = command processed without errors
0x01 = errors occurred
Length of the
response data
Number of bytes that contain relevant user data
8 bits
0x00 = 0 bytes
...
0x20 = 32 bytes