Galil DMC-2X00 user manual Wiring the Opto-Isolated Inputs, Reset Input

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longer under servo control. If the Off-On-Error function is disabled, the motor will decelerate to a stop as fast as mechanically possible and the motor will remain in a servo state.

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.

Reset Input

When this input is pulled low (to 0 volts), the controller will reset. This is equivalent to pushing the reset button on the front of the DMC-2x00.

Uncommitted Digital Inputs

The DMC-2x00 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 IN1goes high.

Controllers with more than 4 axes have 16 optoisolated inputs which are denoted as Inputs 1 thru 16.

Wiring the Opto-Isolated Inputs

The Opto-isolation inputs have a bi-directional capability. To activate an input, at least 1mA of current must flow from the input common through the input (see figure 3.1). This can be accomplished by 2 methods:

Method 1: Connect a positive voltage in the range of +5V to +24V (with respect to the input) at the input common point. Each input is connected to ground to activate the input.

Method 2: Connect ground to the input common point. Each input is activated by connecting a positive voltage between +5V and +24 volts.

The Opto-Isolation Common Point

The opto-isolated inputs are configured into 2 groups. The general inputs, IN[1]-IN[8], and the ABORT input are in one group. The signal, INCOM, is a common connection for all inputs in this group. The limit switches and home switches are in the second group. The signal, LSCOM, is a common connection for all inputs in this group. Figure 3.1 illustrates the internal circuitry.

Group (Controllers with 1- 4	Group (Controllers with 5 - 9	Common
Axes)	Axes)	Signal
IN[1]-IN[8], ABORT	IN[1]-IN[16], ABORT	INCOM
FLA,RLA,HOMEA	FLA,RLA,HOMEA,FLB,RLB,HOMEB	LSCOM
FLB,RLB,HOMEB	FLC,RLC,HOMEC,FLD,RLD,HOMED
FLC,RLC,HOMEC	FLE,RLE,HOMEE,FLF,RLF,HOMEF
FLD,RLD,HOMED	FLG,RLG,HOMEG,FLH,RLH,HOMEH

DMC-2X00 Chapter 3 Connecting Hardware y 41