
Table 6: Process data
ISDU
Name Data type Data stor‐
age Length Access Default
value Value/RangeIndex Sub-
index
DEC HEX
67 43 -
Process data user definition Record Yes 16bytes rw
User-defined output function 1 Uint 1byte rw 1 0 = No function
1 = System status
2 = Position of edge 1
3 = Position of edge 2
4 = Position of edge 3
5 = Position of edge 4
6 = Position of edge 5
7 = Position of edge 6
8 = Position of edge 7
9 = Position of edge 8
10 = Position of edge 9
11 = Position of edge 10
12 = Result of function 1
13 = Result of function 2
14 = Result of function 3
15 = Result of function 4
16 = Result of function 5
17 = Result of function 6
18 = Result of function 7
19 = Result of function 8
20 = Result of function 9
21 = Result of function 10
22 = Virtual outputs 1-16
23 = Teach-in quality
24 = Quality of run
25 = Flow counter
User-defined output function 2 Uint 1byte rw 2
User-defined output function 3 Uint 1byte rw 3
User-defined output function 4 Uint 1byte rw 4
User-defined output function 5 Uint 1byte rw 5
User-defined output function 6 Uint 1byte rw 6
User-defined output function 7 Uint 1byte rw 7
User-defined output function 8 Uint 1byte rw 8
User-defined output function 9 Uint 1byte rw 9
User-defined output function 10 Uint 1byte rw 10
User-defined output function 11 Uint 1byte rw 11
User-defined output function 12 Uint 1byte rw 12
User-defined output function 13 Uint 1byte rw 13
User-defined output function 14 Uint 1byte rw 14
User-defined output function 15 Uint 1byte rw 15
User-defined output function 16
Uint
1byte
rw
16
The process data of the MLG-2 WebChecker can be assigned different functions in accordance with the applica‐
tion. 16 slots are available that are can be individually configured in accordance with the listed functions. To do
so, a data string consisting of 16 values - in the sequence of the desired functions - is compiled and written to the
MLG-2 WebChecker and the IO-Link master.
Value 1 System status – see table 5, page 11.
Value 2-11 Up to 10 edge position values can be output.
Value 12-21 For Result of function, function slots = Index 256...265 must be set in advance in line with
your requirements.
Value 23 see "Installation / Diagnostics", page 36
Value 24 see "Installation / Diagnostics", page 36
Value 25 The Flow Counter makes is possible to send a 16bit value based on the cycle time of the
MLG-2 WebChecker used - can serve as time stamp function.
6.3 PD out
Using the PD-out process data, control commands can be sent cyclically from the IO-Link master to the MLG-2.
Table 7: Control byte
Process data are output, control byte
Bit offset 7 6 5 4 3 2 1 0
Test Stop signal
teach
Start signal
teach
Do material
teach Reserved Standby Reserved Reserved
Test Switch off all sender LEDs.
Used to force a reaction from the receiver and therefore test for correct functionality.
Start signal teach / Stop
signal teach
A sensor teach-in can be performed with the signal teach. This teach process is required for
initial commissioning so all beams are calibrated.
To do so, after the teach process starts, it is necessary for all beams to have an unob‐
structed view of the receiver before the process is ended with stop.
6 PROCESS DATA
12 T E C H N I C A L I N F O R M A T I O N | MLG-2 WebChecker 8026196.1EDC/2022-07-07 | SICK
Subject to change without notice