Modbus Analog and Digital
SNAP Brain
PA G E
1
DATA SHEET
Form 1051-100304
Modbus Analog and Digital SNAP Brain
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
© 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.
Features
Controls both analog and digital I/O modules on its rack.
Works with any Modbus master device.
Communicates via RS-485 in ASCII and RTU modes.
Description
With the SNAP-B3000-Modbus brain, you can use reliable Opto 22
industrial I/O hardware with your existing Modbus-compatible
controller. The SNAP-B3000-Modbus is a high-performance brain
designed to remotely control a mix of both analog and digital I/O
modules using the SNAP B-series I/O mounting racks. With SNAP B
Series racks and any combination of compatible analog and digital
SNAP I/O® modules, this brain provides a powerful and
sophisticated I/O handling system. The on-board intelligence of the
SNAP-B3000-Modbus offers many distributed control functions.
The SNAP-B3000-MODBUS works with any Modbus master device.
The SNAP-B3000-Modbus brain communicates to its master
controller via RS-485 using the Modbus slave protocol in both ASCII
and RTU modes. Serial communication from 300 baud to 115,200
baud is supported.
SNAP-B3000-Modbus functions include the following:
Digital: Input latching, counting (16-bit), and on/off status
Analog: Thermocouple linearization (16-bit fixed point for lin-
earized values)
Part Numbers
Part Description
SNAP-B3000-
MODBUS Analog/Digital Modbus Slave Brain
SNAP-B3000-Modbus
Modbus Analog and Digital SNAP Brain
Modbus Analog and Digital SNAP Brain
PA G E
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DATA SHEET
Form 1051-100304
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
© 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.
Description (continued)
SNAP-B3000-Modbus System Architecture
The SNAP-B3000-Modbus is connected to a SNAP B-series I/O rack,
which can hold either 8, 12, or 16 SNAP modules.
NOTE: Only one data link is required.
Specifications
Power Requirements 5.05.2 VDC at 1.0A max.
Operating Temperature 0 to 70 °C, 95% humidity, non-condensing
Storage Temperature -40 to 85 °C
CPU 16-bit Intel 80C196 I/O processor
Communications Interface RS-485/422, 2- or 4-wire, twisted pair(s), with shield
Data Rates 300, 600, 1200, 2400, 4800, 9600, 19200, 38400,
57600, 76800, and 115200 baud
Range: (Multidrop Mode) Up to 3,000 feet total length or 32 stations maximum
without repeaters
Counter\Frequency Measurement
Maximum Rate: 20 kHz
Minimum Pulse Width: 10 msec
16 bit
LED Indicators RUN (Power On), RCV (Receive), and XMT (Transmit)
Options: Jumper Selectable Address, Communication baud rate, RTU/ASCII
Modbus Analog and Digital SNAP Brain
Modbus Analog and Digital SNAP Brain DATA SHEET
Form 1051-100304
PA G E
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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
© 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.
Communication Jumpers/Wiring
Communication Jumper Descriptions
Jumper Description
0 Pull-up for TX/RX+
1 Terminator for TX/RX
2 Pull-down for TX/RX-
3 Pull-up for RX
4 Terminator for RX line
5 Pull-down for RX line
6 Pull-up for IRQ+
7 Terminator for IRQ
8 Pull-down for IRQ-
Top View: SNAP-B3000-Modbus
Modbus Analog and Digital SNAP Brain
Modbus Analog and Digital SNAP Brain
PA G E
4
DATA SHEET
Form 1051-100304
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
© 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.
Specifications
Communication Jumpers/Wiring (Continued)
Modbus Analog and Digital SNAP Brain
Modbus Analog and Digital SNAP Brain DATA SHEET
Form 1051-100304
PA G E
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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
© 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.
Specifications
Communication Jumpers/Wiring (Continued)
Modbus Analog and Digital SNAP Brain
Modbus Analog and Digital SNAP Brain
PA G E
6
DATA SHEET
Form 1051-100304
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
© 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.
Specifications
Baud/Address Jumpers, LED Descriptions
Table 3. LED Descriptions
LED Description
RCV Processor is currently receiving
data on communication line.
XMT Processor is currently transmitting
data on communication line.
RUN Power on processor
(at least 4.75 VDC)
Table 1: Baud Rate Jumpers
Table 2: Address Table
ASCII Port Modes:
7 data bits, 1 stop bit, even parity
7 data bits, 1 stop bit, odd parity
RTU Port Modes:
8 data bits, 1 stop bit, even parity
8 data bits, 1 stop bit, odd parity
8 data bits, 1 stop bit, no parity
SNAP-B3000-Modbus Brain
Modbus Analog and Digital SNAP Brain
Modbus Analog and Digital SNAP Brain DATA SHEET
Form 1051-100304
PA G E
7
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
© 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.
Modbus Commands
All SNAP digital and analog I/O modules are supported using the
Modbus commands listed in the table below.
Exception Errors
The following table shows exception errors that may be returned.
Modbus
Command (Hex) Definition Opto 22 Equivalent
01 Read coil status Read digital output
02 Read input status Read digital input
03 Read holding registers Read analog output
04 Read input registers Read analog input
05 Force single coil Turn on/off one digital output
06 Preset single register Write to one analog output
0F Force multiple coils Turn on/off multiple digital outputs
10 Preset multiple registers Write to multiple anlaog outputs
Command 0x11, Report slave ID, returns the following data bytes:
Byte 1 = Slave ID, in the format 0x22 (for Opto 22 board).
Byte 2 = RUN indicator; always in the format 0xff. (Since it is a slave, it is always running.)
Byte 3 = Configured flag, indicating whether the host has written to the configuration area of the controller. If this value is 0, all
the analog points are at the default configuration and all digital points are considered inputs. You can look at this value to deter-
mine whether the controller has been through a power cycle.
Bytes 4–8 = Five-character string indicating the version number, for example 3R3.1a.
Error Name Description
1 ILLEGAL_FUNCTION The function code is not implemented in this device.
2 ILLEGAL_DATA_ADDRESS The coil, input, or register specified is not valid for this device.
3 ILLEGAL_DATA_VALUE The data value specified is out of range for the specified function code.
4 SLAVE_DEVICE_FAILURE Failure erasing/writing flash memory. (This error is returned after three tries to erase or
write.)
6 SLAVE_DEVICE_BUSY
Trying to rewrite to flash memory in less than 10 seconds. (See Holding Register 65.
You should store to flash only when the system configuration changes. Make sure you
don’t put store/clear configuration in a loop, or you’ll wear out your flash memory.)
Modbus Analog and Digital SNAP Brain
Modbus Analog and Digital SNAP Brain
PA G E
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DATA SHEET
Form 1051-100304
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
© 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-B3000-Modbus I/O Mapping
The largest SNAP B Series I/O rack can contain a maximum of 16
modules. As shown below, the first eight modules can be either
digital or analog. The last eight modules can be analog only.
Because of the rack’s flexibility in handling both digital and analog
inputs and outputs in many of the same module positions, you can
choose where to install modules and how to use the points.
Since each digital module contains four points, up to 32 digital I/O
points can be installed in the first eight module positions.
Analog input modules contain two points, but analog output
modules can have either one or two points, depending on the
module. Using all module positions, up to 32 analog I/O points can
be installed in the rack.
Modbus Analog and Digital SNAP Brain
Modbus Analog and Digital SNAP Brain DATA SHEET
Form 1051-100304
PA G E
9
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
© 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-B3000-Modbus I/O Mapping (Continued)
The table below shows the possible uses for all points on the relay
rack. Coils and Inputs are bit masks and contain 0 or 1 only. Since
digital counters and module configuration require more than one
bit, they are handled in Input and Holding Registers, which are 16-
bit registers.
Note that you address the same point using different sets of 32
numbers for different purposes.
For example, suppose you have a digital module in position 0 with
four points of I/O.
Coil 4 gives the status of the output at point 4.
Coil 36 clears an on-latch for the output at point 4.
Coil 68 clears an off-latch for the output at point 4.
Or suppose you have a digital input module in position 1 with four
points of I/O.
Input 6 gives the status of the input at point 6.
Coil 134 activates the counter for the input at point 6.
Input Register 38 returns the value of the counter for the input
at point 6.
Coil 102 clears the counter for the input at point 6.
Mapping Information
Coils (0x)
1–32 Digital outputs 1 bits = on; 0 bits = off
33–64 Clear on-latch 1 bits clear on-latches
65–96 Clear off-latch 1 bits clear off-latches
97–128 Counter clear 1 bits clear counters
129–160 Counter state 1 bits activate counters
Inputs (1x)
1–32 Digital inputs 1 bits = on; 0 bits = off
33–64 State of on-latches 1 bits = on; 0 bits = off
65–96 State of off-latches 1 bits = on; 0 bits = off
Input Registers (3x)
1–32 Analog inputs Input values only (Outputs will return 0.)
33–64 Digital counters If counters are enabled, digital counter val-
ues are returned here.
Holding Registers (4x)
1–32 Analog outputs (Reading inputs here will return 0.)
33–48 Module configuration 16 module positions (See “SNAP-B3000-
Modbus I/O Configuration” on page 10.)
65 Store/clear configuration 1 stores configuration values in flash mem-
ory; 0 clears flash.
Latch bits are cleared automatically when the I/O unit
clears the physical latch.
You must enable or disable digital counters here.
Digital counter values are returned under Input
Registers.
If you are using dual-channel analog outputs, you can
read or write all registers to get all the data. But if you
are using single-channel analog outputs, you must skip
the odd-numbered registers and read or write to even-
numbered registers only.
Use Holding Register 65 to copy the current configuration to flash memory. When a power cycle occurs on the relay rack, modules will be
reconfigured with the values from the flash memory. Store the configuration in flash only when it changes. Make sure you don’t put store/
clear in a loop, or you’ll wear out flash memory.
NOTE: For brain firmware earlier than R 1.19 (dated 6-8-01), you must use the Preset Single Register Modbus command (06), not the
Preset Multiple Registers Modbus command (10 hex), to copy to flash. For later firmware, use either command.
Modbus Analog and Digital SNAP Brain
Modbus Analog and Digital SNAP Brain
PA G E
10
DATA SHEET
Form 1051-100304
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
© 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-B3000-Modbus I/O Configuration
Tables of Configuration Types, Values, Scaling
These tables show the values for Holding Registers 33–48 in the
Mapping Information table on the previous page. Part numbers are
shown for analog inputs and outputs. Both points on a module
must be configured the same. All temperatures are in degrees C.
Analog points also show the scaling used for the I/O type and the
default for this type. Scaling allows a floating point to be returned
as an integer. To find the actual value, divide by the scaling number.
For example, if a value of 4,128 is returned for a single-channel 4–
20mA analog output, divide 4,128 by 1,000 to obtain the actual
value, which is 4.128.
Digital Points Decimal Value Hex Value
Input 256 100
Output 384 180
Analog Points - Output Points
Module
Decimal
Value
Hex
Value
Scaling
Default
SNAP-AOA-3
Raw counts 128 80 1
Single-channel 4 to 20 mA 131 83 1000 x
SNAP-AOA-23
Raw counts 128 80 1
Dual-channel 4 to 20 mA 163 A3 1000 x
SNAP-AOV-5
Raw counts 128 80 1
Single-channel 0 to 10 VDC 133 85 1000 x
SNAP-AOV-25
Raw counts 128 80 1
Dual-channel 0 to 10 VDC 165 A5 1000 x
SNAP-AOV-7
Raw counts 128 80 1
Single-channel -10 to +10 VDC 135 87 1000 x
SNAP-AOV-27
Raw counts 128 80 1
Dual-channel -10 to +10 VDC 167 A7 1000 x
SNAP-AOA-28
Raw counts 128 80 1
Dual-channel 0 to 20 mA 168 A8 1000 x
Analog Points - Input Points
Module
Decimal
Value
Hex
Value
Scaling
Default
SNAP-AICTD
Raw counts 0 0 1
Temperature input - ICTD 4 4 100 x
SNAP-AITM and SNAP-AITM-i
Raw counts 0 0 1
Type J Thermocouple 5 5 10 x
Type K Thermocouple 8 8 10
Type E Thermocouple 19 13 10
-75 to +75 mV 68 44 100
-150 to +150 mV 66 42 100 x
SNAP-AITM-2 and SNAP-AITM-2i
Raw counts 0 0 1
-25 to +25 mV 67 43 1000
-50 to +50 mV 9 9 100 x
Type B Thermocouple 24 18 10
Type C Thermocouple 32 20 10
Type D Thermocouple 33 21 10
Type G Thermocouple 31 1F 10
Type N Thermocouple 30 1E 10
Type R Thermocouple 17 11 10
Type S Thermocouple 23 17 10
Type T Thermocouple 18 12 10
SNAP-AIRTD
Raw counts 0 0 1
100 ohms platinum RTD 10 A 10 x
SNAP-AIV and SNAP-AIV-i
Raw counts 0 0 1
-5 to +5 VDC 11 B 1000
-10 to +10 VDC 12 C 1000 x
SNAP-AIMA, SNAP-AIMA-i, SNAP-AIMA-iSRC
Raw counts 0 0 1
-20 to +20 mA 64 40 1000 x
Modbus Analog and Digital SNAP Brain
Modbus Analog and Digital SNAP Brain DATA SHEET
Form 1051-100304
PA G E
11
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
© 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-B3000-Modbus I/O Configuration (Continued)
Tables of Configuration Types, Values, and Scaling
(Continued)
Steps for Using SNAP-B3000-MODBUS
1. Configure the modules by writing the appropriate module con-
figuration codes to Holding Registers 33 through 48 (decimal).
Both points on a module must be configured the same. The fol-
lowing table shows a sample system:
2. Store the module configuration to flash by writing the value 1
to Holding Register 65 (decimal).
3. Cycle power to the brain so that it will boot up with the values
stored to flash.
4. Read the module configuration values from Holding Registers
33 through 48 (decimal) to confirm that the values were stored
to flash.
Analog Points - Two-channel Input Points
Module
Decimal
Value
Hex
Value
Scaling
Default
SNAP-AIMA2-i
Raw counts 0 0 1
–1 to +1 mA 85 55 1000 x
SNAP-AIRATE
Raw counts 0 0 1
0 to 25,000 kHz 69 45 1 x
Analog Points - Two-channel Input Points
Module
Decimal
Value
Hex
Value
Scaling
Default
SNAP-AIVRMS
Raw counts 0 0 1
0 to 250 V RMS 70 46 100 x
SNAP-AIARMS
Raw counts 0 0 1
0 to 10 A RMS 71 47 1000 x
Module
Position
(See
page 8
)
Module Part
Numbers
(See
page 10
)
Holding
Registers
(See
page 9
)
Holding
Register Dat a
(See
page 10
)
Module Data Signal Type
Digital or Analog Modules
0Digital Input 33 256
1Digital Output 34 384
2SNAP-AOA-23 35 128 Raw Counts 4 to 20 mA
3SNAP-AOA-23 36 131 (1000) x (mA signal) 4 to 20 mA
4SNAP-AICTD 37 4(100) x (Degrees C) ICTD Sensor
5Digital Output 38 384
6Digital Output 39 384
7Digital Input 40 256
Analog Modules only
8SNAP-AOV-27 41 128 Raw counts -10 to +10 VDC
9SNAP-AOV-27 42 167 (1000) x (volt age signal) -10 to +10 VDC
10 SNAP-AITM 43 5(10) x (Degrees C) Type J Thermocouple
11 SNAP-AITM 44 8(10) x (Degrees C) Type K Thermocouple
12 SNAP-AITM 45 19 (10) x (Degrees C) Type E Thermocoup le
13 SNAP-AITM 46 68 (1000) x (mV signal) -75 to +75 mV
14 SNAP-AITM 47 66 (1000) x (mV signal) -150 to +150 mV
15 SNAP-AIV 48 11 (1000) x (V signal) -5 TO +5 VDC
Modbus Analog and Digital SNAP Brain
Modbus Analog and Digital SNAP Brain
PA G E
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DATA SHEET
Form 1051-100304
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
© 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.
Brain Assembly
To install the brain onto a B Series rack:
1. Turn off power to the rack assembly.
2. Align the brain connector with the mating connector on
the mounting rack.
3. Seat the brain onto the connector.
4. Use the integral hold-down screw to secure the brain in
position.
5. DO NOT OVERTIGHTEN!
To remove the brain from a B Series rack:
1. Turn off power to the rack assembly.
2. Loosen the brains integral hold-down screw.
3. Pull up on the brain to remove it.
Modbus Analog and Digital SNAP Brain
Modbus Analog and Digital SNAP Brain DATA SHEET
Form 1051-100304
PA G E
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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
© 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.
Dimensions—SNAP-B3000-Modbus Brain
More About Opto 22
www.opto22.com • Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • Form 1335-090113
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
© 2010 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 training@opto22.com.
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