DMC-41x3 Functional Elements
The DMC-41x3 circuitry can be divided into the following functional groups as shown in Figure 1.4 and discussed
below.
Figure 1.4: DMC-41x3 Functional Elements
Microcomputer Section
The main processing unit of the controller is a specialized Microcomputer with RAM and 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. The Flash also contains the firmware of the controller, which is field
upgradeable.
Motor Interface
Galil’s GL-1800 custom, sub-micron gate array performs quadrature decoding of each encoder at up to 15 MHz.
For standard servo operation, the controller generates a ±10 volt analog signal (16 Bit DAC). For stepper motor
operation, the controller generates a step and direction signal.
Communication
The communication interface with the DMC-41x3 consists of high speed 100bT Ethernet and a USB programming
port.
General I/O
The DMC-41x3 provides interface circuitry for 8 bi-directional, optoisolated inputs, 8 optoisolated outputs and 8
analog inputs with 12-Bit ADC (16-Bit optional). Unused auxiliary encoder inputs may also be used as additional
Chapter 1 Overview ▫ 8 DMC-41x3 User Manual
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