User`s manual
http://www.adtechcn.com   6 
● Standard Ethernet RJ45 network interface, TCP/IP protocol supported, ensuring high-speed and reliable 
data communication in environment interfered by electromagnetism. Users can realize real-time control 
over the distant equipment through the LAN. Single-section maximum communication distance reaches 
185 meters (subject to the electromagnetism environment and wiring), with five sections at maximum; 
● Average responsive time of 2.5-4 seconds for commands from the host to the equipment, high real-time 
performance; 
● Some of the commonly used control commands are optimized to realize the combined effects of 
multiple basic commands; 
● Supporting some of G-code machining commands, off-line or real-time machining and control achieved 
through G-code; 
● One-host-and-multiple-server mechanism allows users to control and oversee multiple devices (64 at 
maximum) through one host PC (after expanded with router or HUB ) (subject to the performance of 
host and network); 
● Antivirus performance improved at the lower layer of the network to resist interference from virus like 
ARP and network administrator to improve communication reliability. 
● With USB1.1 interface, application in ADT-8840can be upgraded to facilitate the on-site operation 
whenever necessary; 
● Optimized structure with full optical coupler isolation control provides high interference resistance; 
● RS232 (±15KV static protection); 
● Prompting buzzer; 
● All hardware programmed as function library to facilitate development. 
) Specification 
Input of switch value: 
Channel: 
32, full optical coupler separation; 
Input voltage: 5-24V; 
High level: >4.5V; 
Low level: <1.0V; 
Isolation voltage: 2500V DC; 
Delay time for optical coupler input: not over 0.1ms. 
Counting input: 
Channel: 4AB phase encoding input, full optical coupler isolation (reuse with 8 input switch values); 
Max. counting frequency: 2MHz; 










