SNAP D-Series Racks
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2009–2016 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE
1
DATA SHEET
Form 0777-161123
SNAP D-Series Racks
Features
Ideal for discrete control applications
Control directly or through an Opto 22 PC adapter card
Use panel or DIN-rail mounting
Modules snap into place
Description
SNAP D-series racks are designed for discrete control
applications and can accommodate 4, 6, 8, or 12 SNAP 4-
channel digital modules. These racks use an industry-standard
50-pin header connector, which allows these racks to be used
in a variety of applications.
The logic side of the I/O circuitry can be controlled directly or
by using an Opto 22 PCIe-AC5 (PCI Express bus), PCI-AC5 (PCI
bus) or G4AC5 or AC5 (ISA bus) PC adapter card.
In addition, the 4-module-position SNAP-D4M can be used
with:
•A Raspberry Pi® and Opto 22’s Digital I/O Carrier Board for
Raspberry Pi (part number OPTO-P1-40P)
•Opto 22’s Classic brain boards, which use one of Opto 22’s
industry-standard protocols (mistic®, Optomux®, or Pamux®)
to control the I/O and communicate either serially or in
parallel
Field devices are wired directly to the top-mounted removable
connectors on the SNAP I/O modules. The module and rack
design allows modules to simply “snap” on and off the
mounting rack.
SNAP racks use a retention-rail locking system that holds
modules securely to the rack. Use two 4-40 by ½-inch
standard machine screws to secure each module in position.
All SNAP racks offer panel mounting and the option of DIN-rail
mounting. SNAP racks use a single 5 VDC power source.
Part Numbers
Part Description
SNAP-D4M 4-module digital I/O rack
SNAP-D6M 6-module digital I/O rack
SNAP-D8M 8-module digital I/O rack
SNAP-D12M 12-module digital I/O rack
SNAP-CDBBDIN Classic digital brain board DIN rail
adapter
SNAP-FUSE1AB 1 amp fuse, 25-pack
SNAP-TEX-DRC10 SNAP PAC rack DIN-rail adapter
clip, 10-pack
SNAP-TEX-REC10N Narrow end cap for SNAP PAC racks
DIN-rail assemblies, 10-pack
SNAP-D8M Rack
SNAP D-Series Racks
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2009–2016 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP D-Series Racks
PAGE
2
DATA SHEET
Form 0777-161123
Specifications: SNAP-D4M (4 Module Position)
Notes:
1. Even pins on control connectors are connected to 5V RTN.
2. Pin 1 of control connectors J1 and J2 is connected to +5V
through jumper JP1.
3. Pin 49 of control connectors J1 and J2 is connected to +5V
through jumper JP2.
4. For operation with PC adapter cards (PCIe-AC5, PCI-AC5,
AC5, or G4AC5), remove jumpers JP1 and JP2.
5. Odd numbered pins 3 through 15 of control connectors
are not used.
Operating Requirements
Power Requirements 5 VDC ± 0.1 VDC @ 200 mA max.
(700 mA with brain board)
Operating Temperature Range 0° to 70°C
Relative Humidity 95%, non-condensing
Power Schematic Module Mating
Connector Pinout
(female)
Control Connector (50-pin male)
Module
Position
Channel
Position
J1 Control
Connector
0
047
145
243
341
1
439
537
635
733
2
831
929
10 27
11 25
3
12 23
13 21
14 19
15 17
Module holding screw
4-40 typical
SNAP D-Series Racks
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2009–2016 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP D-Series Racks DATA SHEET
Form 0777-161123
PAGE
3
Specifications: SNAP-D6M (6 Module Position)
Control Connector (50-pin male)
Module
Position
Channel
Position
J1 Control
Connector
0
047
145
243
341
1
439
537
635
733
2
831
929
10 27
11 25
3
12 23
13 21
14 19
15 17
4
16 15
17 13
18 11
19 9
5
20 7
21 5
22 3
23 1
Notes:
1. Even pins on control connectors are connected to 5V RTN.
2. SNAP-D6M and SNAP-D12M are designed to interface with PC
adapter cards (PCIe-AC5, PCI-AC5, AC5, or G4AC5). They are not
compatible with brain boards, because there is no power to the
control connector.
3. Pin 49 - “no” connection.
Operating Requirements
Power Requirements 5 VDC ± 0.1 VDC @ 300 mA max.
Operating Temperature Range 0° to 70°C
Relative Humidity 95%, non-condensing
Power Schematic Module Mating
Connector Pinout
(female)
SNAP D-Series Racks
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2009–2016 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP D-Series Racks
PAGE
4
DATA SHEET
Form 0777-161123
Specifications: SNAP-D8M (8 Module Position)
Power Schematic Module Mating
Connector Pinout
(female)
Notes:
1. Even pins on control connectors are
connected to 5V RTN.
2. Pin 1 of control connectors J1 and J2 is
connected to +5V through jumper JP1.
3. Pin 49 of control connectors J1 and J2 is
connected to +5V through jumper JP2.
4. For operation with PC adapter cards
(PCIe-AC5, PCI-AC5, AC5, or G4AC5),
remove jumpers JP1 and JP2.
5. Odd numbered pins 3 through 15 of
control connectors are not used.
Operating Requirements
Power Requirements 5 VDC ± 0.1 VDC
@ 400 mA max.
Operating Tempera-
ture Range 0° to 70°C
Relative Humidity 95%, non-
condensing
Control Connectors (50-pin male)
Module
Position
Channel
Position
J1 Control
Connector
Module
Position
Channel
Position
J2 Control
Connector
0
047
4
16 47
145 1745
243 1843
341 1941
1
439
5
20 39
537 2137
635 2235
733 2333
2
831
6
24 31
929 2529
10 27 26 27
11 25 27 25
3
12 23
7
28 23
13 21 29 21
14 19 30 19
15 17 31 17
SNAP D-Series Racks
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2009–2016 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP D-Series Racks DATA SHEET
Form 0777-161123
PAGE
5
Specifications: SNAP-D12M (12 Module Position)
Module Mating
Connector Pinout
(female)
Power Schematic
Control Connectors (50-pin male)
Module
Position
Channel
Position
J1 Control
Connector
Module
Position
Channel
Position
J2 Control
Connector
0
047
6
047
145 145
243 243
341 341
1
439
7
439
537 537
635 635
733 733
2
831
8
831
929 929
10 27 10 27
11 25 11 25
3
12 23
9
12 23
13 21 13 21
14 19 14 19
15 17 15 17
4
16 15
10
16 15
17 13 17 13
18 11 18 11
19 9 19 9
5
20 7
11
20 7
21 5 21 5
22 3 22 3
23 1 23 1
Operating Requirements
Power Requirements 5 VDC ± 0.1 VDC
@ 1200mA max.
Operating Tempera-
ture Range 0° to 70°C
Relative Humidity 95%, non-
condensing
Notes
1. Even pins on control connectors are
connected to 5V RTN.
2. SNAP-D6M and SNAP-D12M are
designed to interface with PC adapter
cards (PCIe-AC5, PCI-AC5, AC5, or
G4AC5). They are not compatible with
brain boards, because there is no
power to the control connector.
SNAP D-Series Racks
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2009–2016 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP D-Series Racks
PAGE
6
DATA SHEET
Form 0777-161123
Dimensional Drawing
Front View (when Mounted)—All Models
Overall Length Dimension (All Models)
Part Numbers Description Length
(inches)
Length
(mm)
SNAP-D4M 4-module rack 4.19 106.43
SNAP-D6M 6-module rack 5.74 145.8
SNAP-D8M 8-module rack 7.74 196.6
SNAP-D12M 12-module rack 10.74 272.8
SNAP D-Series Racks
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2009–2016 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP D-Series Racks DATA SHEET
Form 0777-161123
PAGE
7
Dimensional Drawing
Right Side View (with Customer-supplied DIN-Rail Option)—All Models
SNAP D-Series Racks
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2009–2016 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
SNAP D-Series Racks
PAGE
8
DATA SHEET
Form 0777-161123
Dimensional Drawing
General Mounting Instructions
The SNAP rack assembly should be mounted horizontally, as
shown in diagram, if not using module hold-down screws.
Preferred Method: Template (product on site)
1. Use SNAP rack mounting extrusion as template.
2. Be sure to use drawing to determine required product
and option clearances.
Alternate Method: Prefabrication of Panels
(no product on site)
1. Mounting holes are in sets of two located on lower left
and upper right, with respect to a centerline (CL).
2. Using the drawing, determine CL1 mounting hole
positions. (CL1 is located on the left side of all SNAP rack
mounting extrusions.)
3. Use the center-to-center length specification table to
determine offset between centerlines and number of
centerline positions for each model.
4. Repeat process for each centerline position.
5. Dimensions shown in drawing apply to all models.
Typical Plain View of SNAP Mounting Extrusion—All Models
Center-to-Center Length (All Models)
Part
Numbers Description
Center-to-
Center Length
(inches)
# of
Center
Positions
SNAP-D4M 4-module rack 1.98 2
SNAP-D6M 6-module rack 3.53 2
SNAP-D8M 8-module rack 5.53 2
SNAP-D12M 12-module rack 4.26 3
More About Opto 22
www.opto22.com • Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • Form 1335-160810
SALES 800-321-6786 • 951-695-3000 • FAX 951-695-3095 • sales@opto22.com • SUPPORT 800-835-6786 • 951-695-3080 • FAX 951-695-3017 • support@opto22.com
© 2013–2016 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
Products
Opto 22 develops and manufactures reliable, easy-to-use, open
standards-based hardware and software products deployed
worldwide.
Industrial automation, process control, building automation,
industrial refrigeration, remote monitoring, data acquisition,
Industrial Internet of Things (IIoT), and information technology
applications all rely on Opto 22.
groov
Monitor and control your
equipment from anywhere
using your smartphone or
tablet with groov. Build your
own mobile app easily—just
drag, drop, and tag. No
programming or coding. Visit
groov.com
for more
information and your free trial.
SNAP PAC System
Developer- and IIoT-ready, the SNAP PAC System connects
physical assets to databases and applications using open
standards. The SNAP PAC System consists of four integrated
components:
•SNAP PAC controllers
•PAC Project™ Software Suite
•SNAP PAC brains
•SNAP I/O™
SNAP PAC Controllers
SNAP PAC programmable
automation controllers handle a
wide range of digital, analog, and
serial functions for data collection,
remote monitoring, process control,
and discrete and hybrid manufacturing.
For IIoT applications and easier integration with company
systems, standalone and rack-mounted SNAP PACs include a
built-in HTTP/HTTPS server and
RESTful API
(application
program interface). The REST API gives you secure, direct access
to I/O and variable data using your choice of programming
languages. No middleware, protocol converters, drivers, or
gateways needed.
Based on open Ethernet and Internet Protocol (IP) standards,
SNAP PACs make it easier to build or extend a system without the
expense and limitations of proprietary networks and protocols.
PAC Project Software Suite
Opto 22’s PAC Project Software Suite offers full-featured, cost-
effective control programming, HMI (human machine interface),
OPC server, and database connectivity software.
Control programming includes both easy-to-learn flowcharts and
optional scripting. Commands are in plain English; variables and
I/O point names are fully descriptive.
PAC Project Basic offers control and HMI tools and is free for
download on our website,
www.opto22.com
. PAC Project
Professional, available for separate purchase, adds one SoftPAC
software-based controller, OptoOPCServer, OptoDataLink,
options for controller redundancy or segmented networking, and
support for legacy Opto 22 serial
mistic™
I/O units.
SNAP PAC Brains
While SNAP PAC controllers provide central control and data
distribution, SNAP PAC brains provide distributed intelligence for
I/O processing and communications. Brains offer analog, digital,
and serial functions, including thermocouple linearization, local
PID loop control, watchdog, totalizing, and much more.
SNAP I/O
I/O provides the local connection to sensors and equipment.
Opto 22 SNAP I/O offers 1 to 32 points of reliable I/O per module.
Analog, digital, and serial modules are mixed on one mounting
rack and controlled by a SNAP PAC brain or rack-mounted PAC.
Quality
Founded in 1974, Opto 22 has established a worldwide
reputation for high-quality products. All are made in the U.S.A. at
our manufacturing facility in Temecula, California.
Because we test each product twice before it leaves
our factory, rather than only testing a sample of each
batch, we can guarantee most solid-state relays and
optically isolated I/O modules for life.
Free Product Support
Opto 22’s California-based Product Support Group
offers free, comprehensive technical support for
Opto 22 products from engineers with decades of training and
experience. Support is available in English and Spanish by phone
or email, Monday–Friday, 7 a.m. to 5 p.m. PST.
Additional support is always available on our website: how-to
videos, OptoKnowledgeBase, self-training guide, troubleshooting
and user’s guides, and OptoForums.
In addition, hands-on training is available for free at our Temecula,
California headquarters, and you can
register online
.
Purchasing Opto 22 Products
Opto 22 products are sold directly and through a worldwide
network of distributors, partners, and system integrators.
For more information, contact Opto 22 headquarters at
800-321-6786 (toll-free in the U.S. and Canada) or 951-695-3000,
or visit our website at
www.opto22.com
.
www.opto22.com
