Dmc-14Xx Functional Elements; Microcomputer Section; Motor Interface; Communication - Galil Motion Control DMC-14 5 Series Manual

DMC-14XX Functional Elements

The DMC-14XX circuitry can be divided into the following functional groups as shown in Figure 1.1
and discussed below.
ETHERNET
RS-232 /
Figure 1.1 - DMC-14XX Functional Elements

Microcomputer Section

The main processing unit of the DMC-14XX is a specialized 32-bit Motorola 68331 Series
Microcomputer with 1 Meg RAM and 2 Meg Flash EEPROM. The RAM provides memory for
variables, array elements and application programs. The flash EEPROM provides non-volatile storage
of variables, programs, and arrays. It also contains the DMC-14XX firmware.

Motor Interface

Galil's GL-1800 custom, sub-micron gate array performs quadrature decoding of each encoder at up to
12 MHz. For standard servo operation, the controller generates a +/-10 Volt analog signal (16 Bit
DAC). For sinusoidal commutation operation, the controller uses two DACs to generate two +/-10Volt
analog signals. For stepper motor operation, the controller generates a step and direction signal.

Communication

The communication interface with the DMC-14XX consists of one RS-232 port (19.2 kbaud) and one
10base-T Ethernet port.
DMC-14x5/6
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WATCHDOG TIMER
68331
MICROCOMPUTER
WITH
1 Meg RAM
2 Meg FLASH EEPROM
I/O INTERFACE
2 UNCOMMITTED
7 PROGRAMMABLE,
ANALOG INPUTS
INPUTS
HIGH-SPEED LATCH FOR EACH AXIS
ISOLATED LIMITS AND
HOME INPUTS
MAIN ENCODERS
HIGH-SPEED
AUXILIARY ENCODERS
MOTOR/ENCODER
INTERFACE
+/- 10 VOLT OUTPUT FOR
FOR
SERVO MOTORS
X,Y,Z,W
PULSE/DIRECTION OUTPUT
FOR STEP MOTORS
HIGH SPEED ENCODER
COMPARE OUTPUT
3 PROGRAMMABLE
OUTPUTS
Chapter 1 Overview 3
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