DMC-21x2 and DMC-21x3 Series
Ethernet/RS232 Econo 1 8 axes
I/O Expansion Options
DB-28040 I/O Expansion Board
The DB-28040 mounts directly to the DMC-21x3 and provides an
additional 40 digital inputs and outputs, and eight analog inputs
(outputs source 3.3 V. For 24 open collector outputs that sink 5 V, order
DB-28040-5V).The small 2.55"
×
3.08" board attaches directly to the
50-pin header on the DMC-21x3 controller, and no cable is required
between the controller and I/O board. Even with the DB-28040
attached there is still room to mount the ICM-20100, ICM-20105,
SDM-20240, AMP-20340 or AMP-20440.
The 40 digital I/O signals are available on a 50-pin IDC header, and
the analog inputs are available on a 16-pin header.With a controller
firmware modification, the I/O board can also be modified to accept
feedback from SSI encoders.
IOC-7007 Controller for Ethernet I/O Expansion
Galil's IOC-7007 I/O controller provides an intelligent solution for adding
I/O and PLC functionality to the DMC-21x2/21x3 Ethernet control system.
The IOC-7007 I/O controller connects to the Ethernet network allowing it
to communicate with DMC-21x2/21x3 motion controllers and other
devices on the network.The intelligent I/O controller has an on-board
microprocessor for coordinating I/O events and performing tasks normally
handled by a PLC.The IOC-7007 unit accepts up to seven plug-in I/O mod-
ules for easy connection to optoisolated inputs, optoisolated outputs,
analog inputs and outputs and dry-contact relays. Packaging options
include card-level, box-level and DIN-rail mount. Consult the IOC-7007
datasheet for complete specifications.
DMC-2143 4-axis
controller with
attached DB-28040
and ICM-20100
IOC-7007 BOX and IOC-7007-DIN
Distributed Control Option
The DMC-31x3 is a distributed control firmware option for the DMC-21x3
that allows multiple controllers connected on an Ethernet network to be
programmed as a single controller.The DMC-21x3 is an example of a cen-
tral control system where all axes of control reside on a single, central
controller. For example, the DMC-2183 8-axis controller would be used to
control eight axes of motion. In some mechanical systems it is advanta-
geous to have the motion controllers physically distributed throughout
the system to reduce wiring.The DMC-31x3 distributed control option
allows up to eight axes to be distributed amongst several DMC-31x3 con-
trollers.Typically, axes that are close together or that require tightly cou-
pled coordinated motion are controlled by an individual DMC-31x3 con-
troller. For example, an eight axis application might be constructed with
two DMC-3143 4-axis controllers, four separate DMC-3123 2-axis con-
trollers, or eight DMC-3113 1-axis controllers.This provides flexibility not
normally associated with distributed control systems.
Communication overhead and motion coordination issues typical
with distributed, single-axis systems are minimized with the DMC-31x3
controllers. All motion coordination tasks are performed by the various
DMC-31x3 multi-axis controllers in the network.The communication bur-
den with the host PC is minimized because the PC communicates to the
DMC-31x3 controller configured as the master which in turn communi-
cates with all other DMC-31x3 controllers on the network. A special set of
commands for distributed control ease communication issues on the net-
work. For example, the command HC connects the Ethernet handle of a
particular controller to the network.The complete list of distributed com-
mands is found in the instruction set shown below.
The DMC-31x3 distributed controllers use the same hardware as the
DMC-21x3 controllers.This means that all interconnect, amplifier and I/O
options are available for the DMC-31x3.The various amplifier options for
the DMC-31x3 allow for multi-axis controller/drive combinations to be
connected on the distributed Ethernet network.The combination of the
controller and drives offers a cost-effective solution compared to net-
working single axis drives and controllers.
Distributed Control Commands
HA Handle Assignment
HC Automatic handle configuration
HQ
Handle Query
HR Handle restore
HS
Handle switch
HW
Handle wait
LR
Launch slave record
LO
Lockout handle
SA
Send slave command
QW
Slave record update rate
ZA
Ethernet user variable
ZB
Ethernet user variable
CONTROLLERS
--
ETHERNET
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Galil Motion Control, Inc.
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