Operation and communication
2
0
1
5
-0
9
39
Example calculation
At a speed of 3 m/s and with a trigger period of 25 ms, the minimum length of the event marker
is therefore:
L
Event marker
= 30 mm +3 m/s * 0.025 s * 2 =
180 mm
The printed event number and the inverted text identify event markers in contrast to the
identification on code strips (white text on a black background).
The illustration shows part of the event marker #127
Refer to the Accessories chapter for order information relating to event markers.
7.3
Operation with Repair Tape
The repair tape is a short code reel with a length of one meter. The repair tape is used to bridge
defective or damaged areas of an existing code reel.
1. Cut the repair tape to the required length
2. Cover the defective area of the code reel with the repair tape
When the read head enters the range of a repair tape, it sets an event flag in the output data.
You also have the option of triggering a defined action when an event occurs by parameterizing
one of the outputs accordingly (see parameterization software description). Actions of this type
can be initiated when a certain event, all events, or events from an event list occur.
Refer to the Accessories chapter for order information relating to repair tape.
Note!
When placing an event marker on the code strip, make sure that the event marker represents
an accurate continuation of the grid on the code strip where possible.
Note!
When placing a repair tape on the code reel, make sure that the repair tape represents as
accurate a continuation of the grid on the code reel as possible.
Note!
The repair tape works incrementally. In so doing, it adds one value to the previous read position
on the code reel. If the read head starts on a repair tape, the read head reports an error. Move
the read head to a position on the code reel away from the repair tape to read the absolute
value.
Tip
If repairs are required, the
Code Reel Generator
at www.pepperl-fuchs.com can be used as a
short-term workaround. This allows code reel segments to be generated and printed out online.
Enter the start value in meters and the code reel length of the section to be replaced in meters.
This produces a printable PDF file with the required segment of the code reel.
Only use the printout as an emergency solution. The durability of the paper strip varies greatly
depending on the application!