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USER MANUAL Chapter 3 Connecting Hardware • 39
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.
Uncommitted Digital Inputs
The DMC-13X8 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
IN1 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.
DMC-13X8 controllers have 64 additional TTL I/O. The CO commands configures each set of 8 I/O
as inputs or outputs. The DMC-13X8 extended I/O points uses the Cable-80 which connects directly
to the IOM-1964, or via the CB-50-80 to an OPTO 22 (24 I/O) or Grayhill Opto rack (32 I/O).
Information and configuration for the extended I/O may be found in the appendix.
The function “@IN[n]” (where n is 1-80) can be used to check the state of the inputs 1 thru 80.
Wiring the Optoisolated Inputs
Bi-Directional Capability.
All inputs can be used as active high or low. If you are using an isolated power supply you can
connect +5V to INCOM or supply the isolated ground to INCOM. Connecting +5V to INCOM
configures the inputs for active low. Connecting ground to INCOM configures the inputs for active
high.
* INCOM can be located on the DMC-13X8 directly or on the ICM-1900 or AMP-19X0. The jumper
is labeled INCOM, and will tie the input common to the internal +5V.
The optoisolated inputs are configured into groups. For example, the general inputs, IN1-IN8, and the
ABORT input are one group. Figure 3.1 illustrates the internal circuitry. The INCOM signal is a
common connection for all of the inputs in this group.
The optoisolated inputs are connected in the following groups
Group (Controllers with 1- 4 Axes) Common Signal
IN1-IN8, ABORT INCOM
FLX,RLX,HOMEX
FLY,RLY,HOMEY
FLZ,RLZ,HOMEZ
FLW,RLW,HOMEW
LSCOM