Outputs
Sink/Source 4mA per output
Electrical Specifications (5V – Option)
Inputs
Max Input Voltage 5.25 VDC
Guarantee High Voltage 2.0 VDC
Guarantee Low Voltage 0.8 VDC
Inputs are internally pulled up to 5V through a 4.7kΩ resistor
Outputs
Sink/Source 20mA
External Amplifier Interface
External Stepper Control
The controller provides step and direction (STPn, DIRn) outputs for every axis available on the controller. These
outputs are typically used for interfacing to external stepper drivers, but they can be configured for a PWM output.
See the MT command for more details.
PWM/Step and Sign/Direction Electrical Specifications
Output Voltage 0 – 5 VDC
Current Output 20 mA Sink/Source
External Servo Control
The DMC-40x0 command voltage ranges between ±10V and is output on the motor command line - MCMn (where
n is A-H). This signal, along with GND, provides the input to the motor amplifiers. The amplifiers must be sized to
drive the motors and load. For best performance, the amplifiers should be configured for a torque (current) mode
of operation with no additional compensation. The gain should be set such that a 10 volt input results in the
maximum required current.
Motor Command Line Electrical Specifications
Output Voltage ±10 VDC
Motor Command Output Impedance 500 Ω
Amplifier Enable
The DMC-40x0 has an amplifier enable signal - AENn (where n is A-H) which changes under the following
conditions:
• The motor-off command MO is given or the watchdog timer activates.
• The OE command (Enable Off-On-Error) is set and the position error exceeds the error limit (set by ER).
• A limit switch is reached (see OE command in the Command Reference for more information).
Chapter 3 Connecting Hardware ▫ 43 DMC-40x0 User Manual
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