(10) Serial Interface (U201, 601, 602)
The RS232C Serial communication is performed with the external Host Computer with using one of
three channels of the serial interface for asynchronous communication built in CPU (U201).
Buffers (U601, 602) having the DC-DC Converter within it are used as the level converter.
(11) Touch Screen Interface (U201, U703-4, 5, 6, 8, 9, 10)
With using one of three channels of serial interface built in the CPU (U201) for asynchronous
communication, interface with the LCD touch screen by TTL level serial communication is performed.
(12) ID Unit Interface (U201, 603)
With using one of three channels of serial interface built in the CPU (U201) for asynchronous
communication, the serial communication with the ID Unit Interface is performed. Output signal for
the ID reading timing and the ID reading OK/NG input signal are interfaced at the CPU port. The
buffer (U603) having the DC-DC converter within it is used as a level converter.
(13) MEMORY CARD Interface (CN102)
The CPU (U201) uses the specified MEMORY CARD storing the program in the 68 pin card slot
(CN102).
This 68 pin card slot is directly connected to the internal bus.
Inserting the other card than specified (PC card, etc.) cannot assure the operation.
(14) Sensor Entry (U314, 316, 327)
The X, Y, Z axis sensor signal, the volumetric syringe sensor signal, and the ID Unit sensor signal are
input as the home position sensors at the motor drive position.
The Liquid Surface Sensor signal latched from the Y-Z RELAY Unit and the Probe Crash signal are
input.
As the other sensor signal entries, the Mechanical Stop Switch, the Cover Open Switch, the Sample
Rack Switch, the Sample Table Switch, the Rinse Bottle Sensor, the Waste Bottle Sensor, and the
Tube Catch Sensor are activated.
(15) DIP SW Entry (SW202, U207)
Among the 9 bits of the Dip Switch, the 1 ~ 8 bits can be used as port entries.
CA-500 Series S/M 3-19 Revised December 2001 8
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