ELO (Electronic Lock-Out) Input
Used in conjunction with Galil amplifiers, this input allows the user the shutdown the amplifier at a hardware level.
For more detailed information on how specific Galil amplifiers behave when the ELO is triggered, see Integrated in
the Appendices.
Reset Input
When this input is driven low, the controller will reset. This is the same as pressing the “RESET” button on the
controller.
Uncommitted Digital Inputs
The DMC-40x0 has 8 opto-isolated inputs. These inputs can be read individually using the function @ IN[x] where
x specifies the input number (1 thru 8). These inputs are uncommitted and can allow the user to create conditional
statements related to events external to the controller. For example, the user may wish to have the x-axis motor
move 1000 counts in the positive direction when the logic state of DI1 goes high.
This can be accomplished by connecting a voltage in the range of +5V to +28V into INCOM of the input circuitry
from a separate power supply.
Controllers with more than 4 axes have an additional 8 general opto-isolated inputs (inputs 9-16). The
INCOM for these inputs is found on the I/O (E-H) D-Sub connector.
An additional 32 I/O are provided at 3.3V (5V option) through the extended I/O. These are not opto-
isolated.
NOTE: INCOM and LSCOM for Inputs 9-16 and Limit and Home Switches for axes 5-8 are found on
the connectors for the E-H axes. These are NOT the same INCOM and LSCOM for axes 1-4.
DI9-DI16 INCOM (I/O (E-H) D-Sub connectors)
FLSE,RLSE,HOME
FLSF,RLSF,HOMF
FLSG,RLSG,HOMG
FLSH,RLSH,HOMH
LSCOM (I/O (E-H) D-Sub connector)
Wiring the Optoisolated Inputs
Electrical Specifications
Input Common (INCOM) Max Voltage 28 VDC
Limit Common (LSCOM) Max Voltage 28 VDC
Minimum Current to turn on Inputs 1 mA
Bi-Directional Capability
All inputs can be used as active high or low - If you are using an isolated power supply you can connect the positive
voltage of the supply (+Vs) to INCOM or supply the isolated ground to INCOM. Connecting +Vs to INCOM will
configure the inputs for active low. Connecting the isolated ground to INCOM will configure the inputs for active
high. If there is not an isolated available, the Galil 5V or 12V and GND may be used. It is recommended to use an
isolated supply for the optoisolated inputs.
The optoisolated inputs are configured into groups. For example, the general inputs, DI1-DI8 (inputs 1-8), the
ABRT (abort) input and RST (reset) and ELO (electronic lock-out) inputs are one group. Figure 3.1 illustrates the
internal circuitry. The INCOM signal is a common connection for all of the inputs in each group.
DMC-40x0 User Manual Chapter 3 Connecting Hardware • 34
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