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Operating instructions Register sensors RS25
Description of the operating modes and parameters
9.6
Teach-in printing mark mode
The following table describes the "Teach-in printing mark mode":
Description
Function
In this mode, the sensor detects the light remission values
for the three colors and selects the best color for each
mark. The best color is the one which has the highest
difference in terms of the light remission values between
the print mark and the background.
Before you launch RUN mode, a successful teach-in pro-
cess is required for the print marks.
If "Teach-in printing mark" mode is used without key codes,
the PLC must send the values for "T
0
-Trigger". The measur-
ing must be started before the first print mark. After the
last configured reading window for print marks, the teach-
in process stops automatically.
→
See the figure below.
Activation
The mode must be activated via Ethernet Powerlink in the
"Operation mode" field. To begin measuring, the PLC must
calculate the "T
0
-Start" time for the first reading window.
After the last configured reading window for print marks,
the teach-in process stops automatically.
Prerequisite
• The marks must be within the configured reading win-
dow.
The following parameters must be set before starting:
• T
0
-Trigger: Start of the reading window
• Δbx: Width of the reading window for print marks
• Key code = no
Key code use is deactivated.
Feedback
The following data is sent from the sensor to the PLC.
• Mode changes or faults
• Raw data of the light remission values for the selected
colors. Timing values are relative to the Ethernet Power-
link NetTime.
Speed
10 m/s
Table 12: Teach-in printing mark mode
∆
b1
∆
b2
∆
b3
∆
b4
Trigger
Stop
0
Start = T
Fig. 24: Explanation of Teach-in printing mark mode
Δbx Reading window width for print marks configured via Ethernet Powerlink
