User`s manual

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Chapter I Overview
) About the product
ADT-8840 is a high-performance and multifunctional Off-Line Motion Control Card, whose hardware consists of
high-speed microprocessor, large-scope customized IC chips and multilayer PCBs, a structure that integrates the
technological strengths of various manufacturers at home and abroad and features its high reliability, improved
performance and proven technology. Embedded in the product are 4-path pulse/direction signal output, phase
AB+Z pulse input for encoders of four axes, 34-path optical coupler output+4-path alarm input, 18-path optical
coupler output+4-path axis-control output, two-path RS232 communication module, USB interface and network
interface.
ADT-884 is designed on the basis of the control and transmission protocol for Ethernet and TCP/IP protocol, with
which one system can support 64 control cards that control 256 server/stepping motors. With bandwidth of
10Mbps, ADT-884 can be operated in a LAN whose bandwidth is 100Mbps. At present, ADT-884 and its
supporting software can be used in the LAN based on Ethernet or connected to PC’s network interface with the
crossover cables.
) Features
● S3C44B0X CPU（ARM7）from Samsung, with major frequency of 66MHz;
● Large-scope programmable FPGA, real-time multipurpose control technology and hardware
interpolation technology, high reliability;
● Compatible with highly segmented driver, with high machining precision and steady running;
● 2
~4-axis random linear interpolation;
● 2-axis software random arc interpolation;
● Providing buffer for commands of software and hardware to improve efficiency and stability;
● Linear acceleration/deceleration;
● Real-time reading of logic position, actual position and drive speed in running;
● 34-path optical coupler isolation input;
● Optical-coupler isolation pulse input of phase A and B for encoders of 4 axes +phase Z home position
input (can be used for inputting the switch value of 12-path);
● Optical-coupler isolation input with 18-path open collector, with four-axis output, which can be used for
omnipotent server control or server alarm deletion;
● Embedded with 8M SDRAM and 32M Nand FLASH ROM, a sufficient memory space that can satisfy
the running of various complicated programs and machining;