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5Ć26 Functional Overview
C3187Ć90000
Servo Processor System
The servo processor system consists of the following:
D Servo processor (8052)
D Processor support ASIC
D FrontĆpanel interface
D StepperĆmotor driver
D CarriageĆprocessor interface
D Various sensor inputs
D EEROM
Motor
Position
Encoders
Front-Panel
Interface
Motor
Drivers
EEROM
To Main
Processor
System
To Carriage
Processor
System
Processor
Support
ASIC
Stepper-Motor
Driver
Sensors
8052
Servo
Processor
Servo Processor System
Servo Processor
The servo processor controls all of the plotter actuators. Executing the commands issued by
the main processor, it reads the carriage and roller position from the processor support ASIC
and writes the needed control data to the PWM (Pulse Width Modulation) generators in that
ASIC. Through a serial link, the servo processor sends nozzleĆtiming data to, and receives
carriageĆsensor data from, the carriage processor.
Processor Support ASIC
The processor support ASIC provides support for the servo processor, and an interface
between the main processor and the servo processor.