
© SICK AG • Presence Detection • Subject to change without notice • 8018665.10RD 31
Operating instructions IO-Link Master IOLG2PN-03208R01 – PROFINET
Diagnostics
7 Diagnostics
7.1
Diagnostic messages
The diagnostic message that the IO-Link Master generates with an error,
is usually read out and processed by the PLC. It is also possible to read
out and evaluate the diagnostics using function modules from the IO-Link
Master.
The diagnostic message is 34 bytes long and divided into 3 blocks:
BlockHeader, AlarmSpecifier and ChannelProperties
Byte
Value
Designation
Block
0
00
Block Type
BlockHeader
1
02
2
00
Block Length
3
1E
4
01
Block Version High
5
00
Block Version Low
6
00
Alarm type
7
01
8
00
API
9
00
10
00
11
00
12
00
Slot number
13
01
14
00
Subslot number
15
01
16
00
Module ID
17
00
18
00
19
17
20
00
Submodule ID
21
00
22
00
23
01
24
A8
Alarm Specifier
AlarmSpecifier
25
36
26
80
User Structure ID
27
00
28
00
Channel number
29
08
30
08
Channel Properties
ChannelProperties
31
00
32
00
Channel Error Type
33
1A
Table 16: Diagnostic messages