Chapter
6
Operating Instructions
CLV 480 Bar Code Scanner
6-22
©
SICK AG · Division Auto Ident · Germany · All rights reserved
8 010 080/O824/10-02-2005
Operation
Explanation
In a network configuration, object tracking is carried out by each CLV using an internal con-
tinuous object list. The CLV slave receives the necessary tracking information for the objects
in the reading field (current object number, start and end of object, incremental decoder va-
lue) from the OTC 400 via the CAN bus. Depending on the parameter settings, this informa-
tion can also include distance information for focus control. The position of the CLVs along
the conveyor system must be accurately defined so that the bar code(s), object, and scan-
ner can be assigned correctly. A variable tolerance range in the conveyor direction between
two objects (end of one object and start of the next object) enables the reading results to
be assigned to the objects more easily.
Once the information has been read successfully, the CLV sends the reading results (object
number and position of the bar code(s) on the object in the conveyor direction) immediately
to the OTC 400 via the CAN bus. The OTC 400 also collects results with the same name
(identical bar code contents) from each slave to verify them. It then sends the filtered overall
result (for each object relative to the output time in the reading procedure) to the host. The
object enable point (data output) configured in the OTC 400 forms the end of the reading
field. The object enable point configured in the CLV must always be smaller than that in the
OTC 400. The configured focus enable point depends on whether the device is used in a
group and on the arrangement of the CLVs relative to the conveyor system. The focus ena-
ble point is the point CLV allows a new focus switchover when the tracked object has passed
this point, even if the number of bar codes to be read has not yet been reached.
Parameterizing slave mode in the CLV:
OTC 400 Controller:
Besides other function parameterize the following function in the OTC 400:
For functions to be parametrized in the OTC 400: see "
OTS 400 Omni Tracking System
“
Operatings Instructions (no. 8 008 869, English edition).
Action
Settings in CLV-Setup
1. Forwarding reading results to
the CAN interface
Ö
H
OST
I
NTERFACE
tab
Ö
D
ESTINATION
OF
R
ESULT
D
ATA
S
TRINGS
section
– CAN interface
2. Parameterize CAN interface
Ö
CAN I
NTERFACE
tab
Ö
CAN I
NTERFACE
FUNCTION
section
– OTS Slave
Ö
CAN D
ATA
RATE
section
– 500 kBit/s
Table 6-15: Guide: Parameterizing slave mode in the CLV for Object Tracking mode with OTC 400
Action
Settings in CLV-Setup
Choose operation mode in the
OTC 400 (master)
Ö
D
EVICE
C
ONFIGURATION
tab
Ö
R
EADING
T
RIGGER
P
ARAMETERS
button
Ö
O
PERATION
MODE
section
– Increment controlled (Tracking)
Table 6-16: Guide: Parameterizing Object Tracking mode in the OTC 400
