MODEL：LF77-AKZ250-USB2(B)-3AXIS
MODEL：LF77-AKZ250-USB2(B)-4AXIS
This model is the new version LF77-AKZ250-USB2(B), which has the same function as the old version 
LF77-AKZ250-USB2
, and the appearance and other mechanical dimensions are also the same.
The new version (B) is different from the old version:
(1) Appearance: The new version uses SMD LED, including 16 input point indications and 1 speed measurement input point indication.
(2) Function: The 16 input points of the new version have added capacitive filtering.
Product model in the photo MODEL：LF77-AKZ250-USB2(B)-4AXIS 
Chinese&English Manual Ver1.17 (English update:2012-10-02)
PDF [Adobe Acrobat PDF – Zip Archive 1.7 MB]
DOC [Word Document – Zip Archive 2.3 MB]
Windows 10 Driver reinstalling 2017-8-18 [Adobe Acrobat PDF – Zip Archive 0.8 MB]
Plug-in ver2.0.2.1(UsbMove.ZIP) 2019-2-8 [Zip Archive – 0.2MB]
Schematic [Zip Archive]
| Interface | USB |
| Axis output num | 3 or 4 Axis (high-speed optocouplers) |
| Axis output freq | 200KHz |
| Digital inputs | PNP-5V *16 (Optocoupler isolation) |
| Analog inputs | 0-3.3V * 2 (non-isolated) |
| MPG inputs | PNP-5V *1 (Optocoupler isolation) |
| Speed measurement input | 1 (Optocoupler isolation): PNP-5V / NPN-5V |
| Digital outputs | Open collector output 500mA *8 (Optocoupler isolation) |
| Analog output | PWM open collector output 13mA *1 (Optocoupler isolation) |
| Axis Backlash | YES |
| MPG(Manual Pulse Generator) | Not real time |
| Slave Axis(Dual X/Y/Z) | NO |
| Automatic leveling(dual side home switch) | NO |
| Axis Link | NO |