M O T I O N C O N T R O L L E R S
ISA BUS
DMC-1000
70
DMC-1000 ISA Bus Controller
·
Galil Motion Control, Inc.
·
800-377-6329
I/O DESCRIPTION
Inputs:
Encoder, A+, B+: Position feedback
from incremental encoder with two
channels in quadrature. The encoder
can be line driver (±12 V) or TTL.
Note: Encoders that produce out-
puts in the format of pulses and
direction can also be used.
Encoder index, I+: Once-per-revolution
encoder pulse; used in Homing
sequence or Find Index command.
Minimum index pulse width is 120
nsec.
Encoder, A-, B-, I-: Optional differen-
tial inputs from encoder; used for
enhanced noise immunity.
Auxiliary encoder: Inputs for addition-
al encoder; used when encoders
on both the motor and the load
are required. Available on servo
axes only
Abort*
#
: Stops commanded motion
instantly and also aborts application
program.
Reset*
#
: System reset.
Forward and reverse limit switch
#
: When
active, inhibits motion in forward or
reverse direction and also causes the
limit switch subroutine #LIMSWI to
execute.
Home switch
#
: Input for Homing (HM)
and Find Edge (FE) instructions.
Input 1 Input 8
#
: Uncommitted
inputs; can be defined by the user to
trigger events or interrupt program.
Inputs 9-24 available with DMC-
1080.
Latch
#
: High-speed position latch to
capture axis position within 25 µsec
(bypass optoisolation for .1 µsec cap-
ture). AL command arms latch.
Input 1, 2, 3, 4 latches X, Y, Z, W
respectively. Inputs 9, 10, 11, 12
latches E, F, G, H respectively for
DMC-1080.
Analog 1 Analog 7: Analog inputs that
can be connected to external analog
signals such as force or pressure
transducers. 12-bit resolution ADC
for ±10 V input. Can also be used
for position feedback with -AF
option.
Outputs:
Analog motor command: ±10 V range
signal for driving servo amplifiers;
16-bit resolution or .0003 Volts.
Amp enable*: Signal to disable and
enable an amplifier. Amp enable
goes low when a motor-off condi-
tion occurs. For step motors, this
pin provides for reduced current
when low.
STEP OUT: Pulses for input to a step
motor driver. The pulses can be
either active low or high. Upon
Reset, the output will be low if the
SM jumper is on, Tristate if off. The
STEP OUT pin also provides the
PWM signal for servo motors.
Direction: Used with the STEP OUT
signal to give direction to step
motors or servo motors in the sign
magnitude mode.
Error*: The signal goes low when the
position error on any axis exceeds
the limit specified by the error com-
mand, ER.
Output 1 Output 8: These 8 TTL out-
puts are uncommitted and can be
designated by the user to toggle
relays and trigger external events.
The output lines are toggled by Set
Bit (SB), Clear Bit (CB), Define Bit
(OB), and OP instructions. Upon
reset these signals will be low.
Outputs 9 16 available with
DMC-1080.
# Active high or low. Optoisolated 2.2 K
in series; requires at least 2 mA to activate.
* Active low
Specifications (continued)
