4 - Description of Function
Positive Identification (PosID)
Infinium LiHa and Infinium RoMa Operating Manual - Document # 1000000110155 v00
4 - 13
How the
Gripper Works
The figure shows how the gripper engages in the carrier to pull the containers past
the barcode scanner.
During normal operation the carriers (see dashed line) are positioned at the lock
pin (A). The retainers (G) act as a stop for the carrier, because they are locked by
the latch (F).
For barcode identification of the containers, the gripper (D) moves next to the
carrier, then moves in X-direction (see arrow) to engage the pin (B) in the slot at
the rear end of the carrier. At the same time the wedge (E) lifts the latch. The
retainers give way and the carrier can be pulled to the rear.
Barcode Value Verification
The PosID verifies the barcode value before transmitting it to the application
software. As a standard setting the barcode scanner requires two consecutive
identical decoded values to transmit it as a valid result.
Barcode Types
Barcodes on
Containers
There is a variety of different barcode types. Not all types are suitable for
container identification for data security reasons. Only barcode types that employ
a check digit are considered to yield sufficient reading security.
Up to six different container code types per application can be used at the same
time.
Barcodes on
Carriers
Illumina standard carriers are identified by means of two carrier barcodes (code
128). The second barcode is used to verify the carrier ID (the information on the
two barcodes is identical except for one character). This improves identification
security for the carriers.
The dimensions of the carrier are stored in the software. After matching the carrier
ID with the database, the software is able to identify the carrier’s properties.
Barcode Labels
For detailed information on barcode types and proper positioning of barcode
labels on carriers and containers refer to cross references above.
Fig. 4-13
PosID gripper and lock pin
A
B
C
D
E
F
G
A
Lock pin
B
Pin (carrier transport)
C
“No Tube” sensor
D
Gripper
E
Wedge
F
Latch
G
Retainer