OPTO 22 SNAP-PAC-EB1 User manual

SNAP PAC Brains
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX [phone] • [e-mail] • SUPPORT 800-835-6786 • 951-695-3080 • FAX [phone] • [email protected]
© 2007 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.
PA G E
1
DATA SHEET
Form 1689-071001
SNAP PAC Brains
Features
Multi-protocol communications and I/O processor
Handles analog, digital, and other SNAP I/O™modules all
on one mounting rack
Distributed intelligence for your SNAP PAC system
Choose Ethernet or serial network connections, both with
multidrop capability
Description
SNAP PAC brains are powerful and versatile I/O and network
communications processors for your SNAP PAC System™. Designed
primarily to work in distributed systems controlled by a SNAP PAC
programmable automation controller, SNAP PAC brains provide
local intelligence that frees the controller for supervisory tasks.
For example, each brain independently handles functions such as
latching, counting, thermocouple linearization, watchdog timers,
and PID loop control. These functions continue to work on the brain
even if communication with the controller is lost.
SNAP PAC brains can also be used independently for standalone I/O
processing and communication.
SNAP PAC brains are available for either Ethernet or serial network
communications.
• SNAP PAC EB brains communicate over a standard
10/100 Mbps Ethernet network.
• SNAP PAC SB brains communicate over an RS-485 serial net-
work, 2-wire or 4-wire, using a binary protocol.
EB Series Brains
Two SNAP PAC Ethernet Brains are available: the SNAP-PAC-EB1
and the SNAP-PAC-EB2. They are identical in their functions and
features except that the SNAP-PAC-EB1 provides high-speed digital
functions for use with 4-channel digital I/O. The SNAP-PAC-EB2
does not offer high-speed digital functions. For a complete list of
brain features, see page 4.
Each SNAP PAC EB brain is equipped with two switched Ethernet
network interfaces. Because these interfaces share a single IP
address and act just like an Ethernet switch, SNAP PAC brains can be
installed not only in a standard star configuration, but optionally in
a multi-drop configuration, extending the control network without
the expense of additional Ethernet network hardware.
SB Series Brains
The two SNAP PAC Serial Brains are the SNAP-PAC-SB1 and the
SNAP-PAC-SB2. Like the EB brains, the two SB brains are identical
except that the SNAP-PAC-SB1 provides high-speed digital
functions for use with 4-channel digital I/O. The SNAP-PAC-SB2
does not offer high-speed digital functions. See page 4 for a
comparison of brain features.
I/O Processing
Each SNAP PAC brain mounts on a SNAP PAC rack with up to 4, 8,
12, or 16 SNAP I/O modules.
SNAP PAC EB brains support all SNAP analog, digital, serial, and
special-purpose input and output modules. SNAP PAC SB brains
support all SNAP analog and digital modules, plus the SNAP-AIPM
power-monitoring module.
These modules can all be mixed on the same mounting rack and
placed in any position on the rack, to accommodate the required
mix of signals at any location. Each SNAP I/O module provides from
1 to 32 I/O points, depending on the module.
Part Numbers
Part Description
SNAP-PAC-EB1
Ethernet-based analog, digital, and serial
I/O and communications processor for the
SNAP PAC System, with two switched
Ethernet network interfaces and high-speed
digital functions
SNAP-PAC-EB2
Ethernet-based analog, digital, and serial
I/O and communications processor for the
SNAP PAC System, with two switched
Ethernet network interfaces
SNAP-PAC-SB1
Serial-based analog and digital I/O and
communications processor for the SNAP
PAC System, with high-speed digital
functions
SNAP-PAC-SB2
Serial-based analog and digital I/O and
communications processor for the SNAP
PA C S y s t e m
SNAP-PAC-EB1 Brain

SNAP PAC Brains
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX [phone] • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX [phone] • [email protected]
© 2007 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 PAC Brains
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DATA SHEET
Form 1689-071001
For more information on mounting racks, see Opto 22 form #1684,
the SNAP PAC Racks Data Sheet. For more information on SNAP I/O
modules, visit our website at www.opto22.com.
Multiple Protocol Support on Ethernet
In addition to I/O processing, SNAP PAC Ethernet brains support
communication using multiple protocols running simultaneously
over Ethernet. These brains support Modbus®/TCP, SNMP for
network management, FTP for the brain’s built-in file system, SMTP
(email client), and Opto 22’s open memory-mapped OptoMMP
protocol. Communication with OPC 2.0-compliant clients is
available through OptoOPCServer (see “Software,” below).
Software
SNAP PAC brains are primarily designed for use with a SNAP PAC
programmable automation controller. The controller runs a
control program built with PAC Project™software. The PAC Project
software suite comes in two forms, Basic and Professional.
•PAC Project Basic, which is included in the purchase of a
SNAP PAC controller, consists of control programming, human-
machine interface (HMI) creation, and configuration software.
•PAC Project Professional is available for purchase and adds
OptoOPCServer™for OPC connectivity, OptoDataLink™for
database communications, and additional features.
In addition to using a SNAP PAC controller with PAC Project
software, you can communicate with SNAP PAC brains using the
open and documented OptoMMP protocol. A free OptoMMP
Communication Toolkit is available on our website,
www.opto22.com. This toolkit includes ActiveX components and
C++ classes, so you can use programming tools such as Visual
Basic or Visual C++ to communicate with the brains. See form
#1465, the OptoMMP Protocol Guide, for more information.
Ethernet brains can also communicate using Modbus/TCP; see
Opto 22 form #1678, the Modbus/TCP Protocol Guide, on our
website.
Specifications
View from top
SNAP I/O modules
Rack
Brain
Power Requirements 5.0–5.2 VDC at 750 mA maximum (does not include module power requirements)
Memory 16 MB RAM
Backup battery for real-
time clock
Rechargeable (recharges whenever the brain has power). 5-year life when power is
off. (Models manufactured before August 2007 have user-replaceable batteries.
See original user guide for details or contact Product Support.)
Operating Temperature 0 to 60 °C
Storage Temperature -40 to 85 °C
Humidity 0–95% humidity, non-condensing
Ethernet Brains (EB)
Network Interfaces
IEEE 802.3 network, 10Base-T and 100Base-TX. Automatic MDC/MDI-X crossover
(Ethernet crossover cable not required for direct connection to PC). Two switched
interfaces, allowing multi-drop (daisy-chain) or standard star network configuration.
Maximum Ethernet
Segment Length
100 meters with Category 5 or superior UTP
For 100 Mbps at this distance, use Category 5 or superior solid UTP.
Serial Brains (SB)
Network interfaces RS-485, 2- or 4-wire, twisted pair(s), with shield
Serial data rates 300 baud to 230.4 Kbaud
Range: Serial multidrop 32 stations maximum between repeaters; up to 3000 ft (914 m) between repeaters

SNAP PAC Brains
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX [phone] • [e-mail] • SUPPORT 800-835-6786 • 951-695-3080 • FAX [phone] • [email protected]
© 2007 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 PAC Brains DATA SHEET
Form 1689-071001
PA G E
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LEDs and Network Interfaces—Ethernet Brains
LEDs and Network Interfaces—Serial Brains
Switched Ethernet network interfaces
Ethernet brains can be networked in a multi-
drop (daisy-chain) configuration or in a
standard star configuration using either
Ethernet interface. Both interfaces use the
same IP address.
NOTE: When using a multi-drop
configuration, be aware that if power to a
brain is lost, all brains beyond it on the
network will also lose communication.
LEDs
LED Indicates
LNK Link established with
Ethernet network
ACT Activity on Ethernet
network
STAT Brain status
MS
NS
Unnamed
Reserved for future
use
Serial port
On a serial brain, the port is RS-485, either
2-wire or 4-wire. Baud rate, termination,
and address are set using the switches on
the brain’s top cover.
See form #1690, the SNAP PAC Brains User’s
Guide, for serial cable recommendations
and wiring.
NOTE: IRQ connections and LED are reserved
for future use.
LEDs
LED Indicates
SERIAL
Green = Transmit
Red = Receive
Amber = Transmit/Receive
STAT Brain status
IRQ Reserved for future use

SNAP PAC Brains
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX [phone] • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX [phone] • [email protected]
© 2007 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 PAC Brains
PA G E
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DATA SHEET
Form 1689-071001
Features
The following table compares SNAP PAC brains using firmware 8.1.
FEATURE SNAP-PAC-
EB1
SNAP-PAC-
EB2
SNAP-PAC-
SB1
SNAP-PAC-
SB2
Ethernet networking nn
Two switched Ethernet network interfaces (one IP address) nn
Ethernet network security (IP filtering, port access) nn
Serial networking (RS-485, 2-wire or 4-wire) nn
I/O modules
supported
Digital (4–32 channels per module) nnnn
Analog (2–32 channels per module) nnnn
Serial (RS-232, RS-485) nn
Special-purpose: power monitoring nnnn
Special-purpose: motion control, Profibus®,
Wiegand®)nn
Digital I/O point
features
On/off status nnnn
Input latching nnnn
Watchdog timer nnnn
High-speed counting (up to 20 kHz)2nn
Quadrature counting3nn
On-pulse and off-pulse measurement2,4 nn
TPO (time-proportional output)4nn
Pulse generation (N pulses, continuous square
wave, on-pulse, and off-pulse)4nn
Analog I/O point
features
Thermocouple linearization (32-bit floating point
for linearized values) nnnn
Minimum/maximum values nnnn
Offset and gain nnnn
Scaling nnnn
Time-proportional output5nnnn
Output clamping nnnn
Filter weight nnnn
Watchdog timer nnnn
Ramping4nnnn
Maximum number of modules allowed per I/O unit (with largest rack):
Any mix of 16 digital, 16 analog, 8 serial or special-purpose nn
n1n1
PID logic on the brain (96 PID loops per brain) nnnn
Scratch Pad area for peer-to-peer data
(bits, floats, integers, and strings) nnnn
Realtime clock (RTC) nnnn
OPC driver support nn
n7n7
OptoMMP memory-mapped protocol nnnn
Modbus®/TCP nn

SNAP PAC Brains
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX [phone] • [e-mail] • SUPPORT 800-835-6786 • 951-695-3080 • FAX [phone] • [email protected]
© 2007 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 PAC Brains DATA SHEET
Form 1689-071001
PA G E
5
SNMP (network management)
6nn
FTP server, file system nn
Email (SMTP client) nn
UDP Streaming nn
Digital events, Alarm events, Serial events nn
n8n8
Event messaging nn
Data logging in the brain nn
I/O point data mirroring and memory map copying nn
1 Does not support serial, motion control, Profibus, or Wiegand modules.
2 Four-channel digital modules only; not available on high-density digital modules.
3 Requires a SNAP quadrature input module (SNAP-IDC5Q).
4 Available when used with PAC Control Professional and a SNAP PAC controller.
5 Requires a SNAP analog TPO module (SNAP-AOD-29).
6 Currently available on all types of modules except analog modules with more than 4 points.
7 Available when used with OptoOPCServer and PAC Control, through a SNAP PAC controller.
8 Does not support serial events.
FEATURE SNAP-PAC-
EB1
SNAP-PAC-
EB2
SNAP-PAC-
SB1
SNAP-PAC-
SB2

SNAP PAC Brains
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX [phone] • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX [phone] • [email protected]
© 2007 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 PAC Brains
PA G E
6
DATA SHEET
Form 1689-071001
System Architecture
SNAP PAC brains are ideally suited for use as local I/O, logic, and
communication processors in distributed systems.
The system shown below is controlled by a SNAP PAC S-series
standalone controller running a PAC Control strategy. Some of the
distributed I/O units are on an Ethernet network using EB brains,
and some are on a serial network using SB brains. The controller
handles all I/O on both networks.
While the controller provides overall direction to the control
system, each SNAP PAC brain locally handles counting, latching,
thermocouple linearization, PID loop control, and other functions
for the I/O modules on the racks. These local functions continue
even if the controller loses communication with the brains.
SNAP PAC S-series controller
running a PAC Control strategy
PC used to develop a PAC Control strategy.
Once developed, the strategy runs
independently on the SNAP PAC controller.
One or more PCs running a PAC Display
HMI for operators or technicians.
SNAP PAC brains and I/O (distributed units). The top four are on an
Ethernet network; the bottom two are on a serial network.
Serial network
Ethernet network

SNAP PAC Brains
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX [phone] • [e-mail] • SUPPORT 800-835-6786 • 951-695-3080 • FAX [phone] • [email protected]
© 2007 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 PAC Brains DATA SHEET
Form 1689-071001
PA G E
7
System Architecture (continued)
SNAP PAC Ethernet Brains offer two options for networking. As
shown in the diagram on the previous page, they can be
networked in a standard star configuration using off-the-shelf
Ethernet network switches or routers.
As shown below, SNAP PAC Ethernet brains can also be networked
in a daisy-chain configuration, using the two switched Ethernet
interfaces on each brain.
In this diagram, a rack-mounted SNAP PAC R-series controller runs
the PAC Control strategy and controls the system. The distributed
brains are daisy-chained together, eliminating the expense of
additional routers or switches.
SNAP PAC R-series controller running a PAC Control strategy
PC used to develop a PAC Control strategy.
Once developed, the strategy runs
independently on the SNAP PAC controller.
One or more PCs running a PAC Display
HMI for operators or technicians.
SNAP PAC EB brains and I/O (distributed units), daisy chained

SNAP PAC Brains
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX [phone] • [email protected] • SUPPORT 800-835-6786 • 951-695-3080 • FAX [phone] • [email protected]
© 2007 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 PAC Brains
PA G E
8
DATA SHEET
Form 1689-071001
System Architecture (continued)
While SNAP PAC Ethernet brains can communicate directly with
other devices using several protocols over Ethernet, SNAP PAC
serial brains communicate with OPC clients, corporate databases,
and other third parties through a SNAP PAC S-series controller.
If you are not using a controller, you can build custom software to
communicate with the SNAP PAC serial brain. In this case, an
Opto 22 PCI-AC48 adapter card provides an RS-485 converter as
the serial link to the brain. Our free OptoMMP Communication
Toolkit (available on our website) includes the tools for creating
custom software.
SNAP PAC S-series controller running a PAC Control strategy
PC used to develop a
PAC Control strategy.
Once developed, the strategy
runs independently on the
SNAP PAC controller.
One or more PCs running
a PAC Display HMI for
operators or technicians.
SNAP PAC SB
brains and I/O
SNAP PAC SB
brains and I/O
PC with Opto 22
adapter card
(PCI-AC48),
running custom
software
Third-party software
SNAP PAC Serial Brains used without a Controller
SNAP PAC Serial Brains used with a Controller
Serial network
Serial network
Ethernet network
Ethernet network
OptoOPCServer
OptoDataLink
Third-party software

SNAP PAC Brains
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SALES 800-321-6786 • 951-695-3000 • FAX [phone] • [e-mail] • SUPPORT 800-835-6786 • 951-695-3080 • FAX [phone] • [email protected]
© 2007 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 PAC Brains DATA SHEET
Form 1689-071001
PA G E
9
Dimensional Drawing
Dimensions—SNAP PAC Ethernet Brains
Dimensions—SNAP PAC Serial Brains

More About Opto 22
www.opto22.com • Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • Form 1335-070717
SALES 800-321-6786 • 951-695-3000 • FAX [phone] • [e-mail] • SUPPORT 800-835-6786 • 951-695-3080 • FAX [phone] • [email protected]
© 2007 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, flexible, easy-to-use
hardware and software products for industrial automation, remote
monitoring, and data acquisition applications.
SNAP PAC System
Designed to simplify the typically complex process of
understanding, selecting, buying, and applying an automation
system, 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
Programmable automation controllers
(PACs) are multifunctional, multidomain,
modular controllers based on open standards and
providing an integrated development environment.
Opto 22 has been manufacturing PACs for many years. The latest
models include the standalone SNAP PAC S-series and the rack-
mounted SNAP PAC R-series. Both handle a wide range of digital,
analog, and serial functions and are equally suited to data
collection, remote monitoring, process control, and discrete and
hybrid manufacturing.
SNAP PACs are based on open Ethernet and Internet Protocol (IP)
standards, so you can 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 provides full-featured and
cost-effective control programming, HMI (human machine
interface) development and runtime, OPC server, and database
connectivity software to power your SNAP PAC System.
These fully integrated software applications share a single tagname
database, so the data points you configure in PAC Control™are
immediately available for use in PAC Display™, OptoOPCServer™,
and OptoDataLink™. 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 OptoOPCServer,
OptoDataLink, options for Ethernet link 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; PID loop
control; and optional high-speed digital counting (up to 20 kHz),
quadrature counting, TPO, and pulse generation and measurement.
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,
depending on the type of module and your needs. Analog,
digital, serial, and special-purpose modules are all mixed on
the same mounting rack and controlled by the same processor
(SNAP PAC brain or rack-mounted controller).
Quality
Founded in 1974 and with over 85 million devices sold,
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
do no statistical testing and each part is tested twice before leaving
our factory, we can guarantee most solid-state relays and optically
isolated I/O modules for life.
Free Product Support
Opto 22’s Product Support Group offers free, comprehensive
technical support for Opto 22 products. Our staff of support
engineers represents decades of training and experience. Product
support is available in English and Spanish, by phone or email,
Monday through Friday, 7 a.m. to 5 p.m. PST.
Free Customer Training
Hands-on training classes for the SNAP PAC System are offered at
our headquarters in Temecula, California. Each student has his or
her own learning station; classes are limited to nine students.
Registration for the free training class is on a first-come, first-served
basis. See our website, www.opto22.com, for more information or
email [email protected].
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 or
951-695-3000, or visit our website at www.opto22.com.
www.opto22.com