Uncommitted Digital Inputs; Wiring The Optoisolated Inputs - Galil Motion Control DMC-1000 User Manual

Table of Contents

All motion programs that are currently running are terminated when a transition in the Abort input is

detected. For information on setting the Off-On-Error function, see the Command Reference, OE.

NOTE: The error LED does not light up when the Abort Input is active.

The DMC-1000 has 8 uncommitted opto-isolated inputs. These inputs are specified as INx where x

specifies the input number, 1 through 24. These inputs allow the user to monitor 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 IN1 goes high.

Controllers with 5 or more axes have 16 opto-isolated inputs and 8 TTL level inputs. .

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For controllers with more than 4 axes, the inputs 9-16 and the limit switch inputs for the additional

axes are accessed through the second 100-pin connector.

IN9-IN16

FLE,RLE,HOMEE

FLF,RLF,HOMEF

FLG,RLG,HOMEG

FLH,RLH,HOMEH

A logic zero is generated when at least 1mA of current flows from the common to the input. A

positive voltage (with respect to the input) must be supplied at the common. 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.

Wiring the Optoisolated Inputs

The default state of the controller configures all inputs to be interpreted as a logic one without any

connection. The inputs must be brought low to be interpreted as a zero. With regard to limit switches,

a limit switch is considered to be activated when the input is brought low (or a switch is closed to

ground). Some inputs can be configured to be active when the input is high - see section Changing

Optoisolated Inputs from Active High to Active Low.

The optoisolated inputs are organized into groups. For example, the general inputs, IN1-IN8, and the

ABORT input are one group. Each group has a common signal which supplies current for the inputs

in the group. In order to use an input, the associated common signal must be connected to voltage

between +5 and +28 volts, see discussion below.

The optoisolated inputs are connected in the following groups (these inputs are accessed through the

26-pin J5 header).

Group

IN1-IN8, ABORT

FLX,RLX,HOMEX

FLY,RLY,HOMEY

FLZ,RLZ,HOMEZ

FLW,RLW,HOMEW

For controllers with more than 4 axes, the inputs 9-16 and the limit switch inputs for the additional axes

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are accessed through a separate connector, JD5.

Group

IN9-IN16

DMC-1000

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