i2000SR interface module Service Manual
Page 12 of 212 625798100.APS.5.doc
During the APS operational mode, Workcell carriers identified as
On-line Carriers can be processed along with the Off-line
carriers. As the IM Off-line and Workcell On-line carriers have
different RFID tags the IM routes all Off-line carriers to Lane 4
and the On-line carriers back to the Workcell, after processing.
NOTE:
If an IM Off-line carrier enters the APS track, the APS
identifies the off-line carrier at the next RFID gate tag
reader position and the APS carrier movement stops.
Process Controls
Nine RFID antennae are used to identify the carriers. Seven are
on the IM module and two are on the track instrument interface.
Three optical sensors are used to sense the presence of tubes.
One is located at the routine sample input area (G7b), another at
the priority sample input area (G8) and the third at the sample
output (G6). (See Figure 4 and Figure 6)
Two additional optical detectors located near disk D3 are used to
verify that On-line carriers are routed back to the APS Workcell
and Off-line carriers are routed to Lane 4.
Stop Gates
The IM Stop Gates and Diverters are pneumatic devices controlled
by the firmware (F/W) in the Master and Slave Tag Reader boards
located in the IM electrical box. These devices control carrier
traffic on IM lanes and the associated instrument interface.
There are three different types of stop gates:
Type 1 Gate – avoids interference with other carriers that are
arriving on the next lane.
Type 2 Gate – waits for an optical sensor to detect either the
insertion or removal of a tube.
Type 3 Gate – waits for the carrier to be identified using the RFID
tag reader.
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