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ACC-68E is a universal digital I/O expansion board provided by Delta Tau (now part of Omron) for its UMAC/Power PMAC series motion controllers. It belongs to a digital I/O card with 24 inputs/24 outputs, designed specifically for multi axis motion systems that require high-speed and reliable on-site signal acquisition and control. Through optocoupler isolation, ACC-68E can achieve on-site wiring of high voltage/high current without interfering with the digital circuit of the core controller.
Model: ACC-68E (part number 603595)
Compatible platforms: Delta Tau UMAC, Power PMAC series controllers (such as UMAC Turbo, PMAC Lite, etc.)
Input channel: 24 digital inputs, supporting sink/source mode from 12V to 24V
Output channel: 24 digital outputs, sink mode, voltage range 5   V – 24   V
Optocoupler isolation: All inputs/outputs are optically isolated from the core UMAC digital circuit, enhancing anti-interference capability
Electrical characteristics – Input current ≤ 2 mA (typical)
-Output driving capability: Maximum 24V @ 20mA (sink)
Data structure mapping: In the Power PMAC scripting environment, the structure name corresponding to ACC-68E is Acc68E [i], which is actually mapped to the GateIo [i] data structure
Register initialization: default CtrlReg=0x07 (disabling the first three byte registers of Port A), which can be modified to enable all 24 output channels
Functional features: -24 bit input/output bits mapped to a 32-bit bus (bits 8-15 for output)
Application scenarios: Motion control systems that require high-speed digital I/O, such as multi axis robots, CNC machine tools, packaging automation, semiconductor manufacturing equipment, etc.

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