SeaLevel Relio R3 User manual

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© Sealevel Systems, Inc. R3 Manual | SL9248 11/2022
Relio R3
User Manual | R3

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© Sealevel Systems, Inc. R3 Manual | SL9248 11/2022
Contents
INTRODUCTION ................................................................................................................................................... 4
BEFORE YOU GET STARTED ...............................................................................................................................6
SPECIFICATIONS ...............................................................................................................................................10
OPERATING TEMPERATURE RANGE.........................................................................................................................................10
POWER SUPPLY ..............................................................................................................................................................11
POWER INPUT ................................................................................................................................................................12
SYSTEM OPERATION ........................................................................................................................................13
POWER BUTTON..............................................................................................................................................................13
POWER STATES...............................................................................................................................................................13
RESET BUTTON...............................................................................................................................................................13
HIGH PERFORMANCE SERIAL COMMUNICATION PORTS.................................................................................................................13
Serial Port Setup ..................................................................................................................................................14
Clock Modes.........................................................................................................................................................14
Baud Rates...........................................................................................................................................................14
Serial Port 3 Operation ........................................................................................................................................15
CMOS BATTERY.............................................................................................................................................................17
SYSTEM DESCRIPTION .....................................................................................................................................18
FRONT PANEL I/O CONNECTORS ..........................................................................................................................................19
REAR PANEL I/O CONNECTORS............................................................................................................................................19
MECHANICAL DRAWINGS ...................................................................................................................................................20
GETTING STARTED............................................................................................................................................22
SYSTEM STARTUP............................................................................................................................................................22
WHERE TO GET SOFTWARE .................................................................................................................................................23
SOFTWARE INSTALLATION ..............................................................................................................................24
Upgrading to the current SeaCOM driver ............................................................................................................26
USING TALOS .NET FRAMEWORK..........................................................................................................................................30
I2C-CardDetect.....................................................................................................................................................31
I2C-EEPROM.........................................................................................................................................................31
I2C-LED.................................................................................................................................................................31
SEAMAX......................................................................................................................................................................32
LINUX SUPPORT..............................................................................................................................................................38
INSTALLING SEARAQ MODULES......................................................................................................................39
SERVICEABLE PARTS........................................................................................................................................40
ACCESS SERVICEABLE PARTS (FIXED DISK,FUSE,SERIAL PORT JUMPER AND PCIE EXPANSION SLOT)..........................................................40
INSTALLING PCI EXPRESS EXPANSION CARDS...........................................................................................................................42

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SERIAL PORT 3CONFIGURATION ..........................................................................................................................................43
INPUT CURRENT PROTECTION FUSE .......................................................................................................................................44
FIXED DISK DRIVE REMOVAL ...............................................................................................................................................45
BIOS CONSIDERATIONS....................................................................................................................................50
APPENDIX A – HANDLING INSTRUCTIONS ....................................................................................................51
APPENDIX B – ELECTRICAL INTERFACE.........................................................................................................52
APPENDIX C – ASYNCHRONOUS COMMUNICATIONS ..................................................................................53
APPENDIX D – GENERAL WIRING GUIDELINES ..............................................................................................54
WARRANTY ........................................................................................................................................................55

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Introduction
The Relio R3 is a solid-state 3U rackmount computer designed for applications requiring high reliability,
maximum I/O expansion, scalable processing, and a long product lifecycle. The R3’s fanless and nearly
cable-less structure ensures extensive durability for long-term usage. The R3 differs from traditional
industrial computer systems in that it is built using the PICMG COM Express architecture. Sealevel has
partnered with the leading COM Express module manufacturers to ensure our customers benefit from the
best in the industry. This manual will focus on the higher level features of the R3 computer system. More
detailed information (for example, connector pin outs) can be found in the 12000 COM Express carrier
board manual.
The R3 is compatible with Basic and Compact form factor Type 6 pin out COM Express modules. COM
Express is a widely supported implementation of Computer on Module (COM) design. The COM Express
architecture reduces the complexity, cost and time required for custom computer system design by
combining the processing, memory, video, Ethernet, and USB functionality in a small, highly integrated
module. COM Express modules install on a carrier board that provides the application specific I/O and
external connectors best suited for the system requirements.
Sealevel COM Express carrier boards leverage the company’s years as a leader in I/O and communication
products to provide carrier board and full system solutions in the fastest time possible. Common I/O
features include serial, analog and digital I/O. Sealevel’s extensive library of proven I/O circuits can be
included as required to meet the specific I/O count, voltage ranges and connector types.
Features
The following features are included and installed on the Relio R3 models.
7” Integrated Touchscreen LCD Operator Interface on Front Panel
18 expansion slots for digital, analog, and serial I/O
1 PCI Express bus expansion slot
1 DisplayPort Compatible Video Output
2 Gigabit Ethernet Ports
2 RS-232 Serial Ports
1 RS-485 Serial Port
4 USB 2.0 Ports
1 Audio Line Input
1 Audio Line Output
Power and SATA Activity LED Indicators
Reset Button
Power Switch Button
PCI Express Mini Card Expansion (half-length only)
Accepts 2.5” SATA Disk Drive (not externally accessible)
18-36 VDC Input

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COM Express Module/RAM Configuration options
Part Number COM Express Module COM Express Module Description RAM
R31004 TCA/N2800 Type 6 Compact Module with Intel
Atom N2800 Cedarview CPU
4GB DDR3 1333 Non-ECC

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Before You Get Started
What’s Included
The R3 is shipped with the following items. If any of these items are missing or damaged, please contact
Sealevel at 864.843.4343 for a replacement.
•R3 Computer System
•TR139-US AC/DC Power Supply – Desktop 100VAC-240VAC input, 24V 4.0A output w/AC power
cable
Advisory Conventions
Warning
The highest level of importance used to stress a condition where damage could result to the
product, or the user could suffer serious injury.
Important
The middle level of importance used to highlight information that might not seem obvious or a
situation that could cause the product to fail.
Note
The lowest level of importance used to provide background information, additional tips, or other
non-critical facts that will not affect the use of the product.

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Optional Items
Depending upon your application, you are likely to find one or more of the following items useful with the
R3. All items can be purchased from our website (www.sealevel.com)or by calling our sales team at (864)
843-4343.
DB9 Female to DB9 Male Extension Cable, 72” Length (Item# CA127)
The CA127 is a standard DB9F to DB9M serial extension
cable. Extend a DB9 cable or locate a piece of hardware
where it is needed with this six-foot (72-inch) cable. The
connectors are pinned one-to-one,
so the cable is
compatible with any device or cable with DB9 connectors.
The cable is fully shielded against interference and the
connectors are molded to provide strain relief. Dual metal
thumbscrews secure the cable connections and prevent
accidental disconnection.
9 Female to DB25 Male Standard RS-232 Modem Cable, 72” Length
(Item# CA177)
The CA177 is a standard AT-style RS-232 modem cable
with a DB9 female connector on one end and a DB25 male
connector on the other end. Simply connect the DB9
female connector to the DB9 serial port on the R3, and
then connect the DB25 male connector to your RS232
serial modem or other compatible RS-232 serial device.
The six foot cable is fully shielded with dual thumbscrews
at each connector. The molded conne
ctors integrate
strain relief to prevent damage to the cable or connectors.
All DB9 modem control signals are implemented, and the
cable is pinned to EIA-232 standards.
Terminal Blocks
DB9 Female to 9 Screw Terminal Block (Item# TB05)
The TB05 terminal block breaks out a DB9 connector to 9
screw terminals to simplify field wiring of serial
connections. It is ideal for RS-422 and RS-485 networks,
yet it will work with any DB9 serial connection, including
RS-232. The TB05 includes holes for board
or panel
mounting. The TB05 is designed to connect directly to the
R3 DB9 serial ports or any cable with a DB9M connector.
DB9 Female to 5 Screw Terminal Block (RS-485) (Item# TB34)
The TB34 terminal block adapter offers a simple solution
for connecting RS485 field wiring to the R3’s serial port
3. The terminal block is compatible with 2-wire and 4wire
RS
485 networks. A pair of thumbscrews secures the
adapter to the DB9 male connector and prevents
accidental disconnection.

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CAT5 Patch Cable, 7’ In Length (Part# CA246)
Standard 7' CAT5 Unshielded Twisted Ethernet Pair Patch
Cable (RJ45) with blue jacket.
CAT5 Patch Cable, 10' In Length (Part# CA247)
Standard 10’ CAT5 Unshielded Twisted Pair Ethernet
Patch Cable (RJ45) with blue jacket.
06 Channel Isolated RTD Analog Inputs (Part# 6511)
The SeaRAQ 6511 analog expansion board is specifically
designed to interface RTDs (Resistance Temperature
Detectors). RTDs offer a wide temperature measurement
range, good accuracy, repeatability, and long-term stability
well-suited to industrial applications.
6 Channel Isolated Thermocouple Inputs (Part# 6512)
The SeaRAQ 6512 analog expansion board is specifically
designed to interface inexpensive thermocouples. To
simplify temperature calibration in the field, cold junction
compensation is provided on the board.
16 Channel Isolated Digital Inputs (3-30 VDC) (Part# 8510)
The SeaRAQ 8510 expansion board adds 16 channels of
isolated digital inputs designed for 3-30 VDC. The inputs
are compatible with TTL signal levels.
16 Channel Isolated AC Digital Inputs (0-132 VAC) (Part# 8511)
The SeaRAQ 8511 expansion board adds 16 channels of
isolated digital inputs rated for 0-132 VAC.
16 Channel Isolated Form Relay Outputs (Part# 8520)
The SeaRAQ 8520 expansion board adds 16 isolated relay
outputs rated for 5-250 VAC and 5-30 VDC. The Form A
relays are organized into four banks of four relays, with
each bank sharing a common. The relays support a
maximum current load of 2A per relay (4A maximum per
bank). The SPST relays are normally open and close when
energized.

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06 Channel Isolated Relay Outputs (Part# 8521)
The SeaRAQ 8521 expansion board adds 8 isolated relay
outputs rated for 5-250 VAC and 5-30 VDC. The Form A
relays each have a discrete common and support a
maximum 4A current load. The SPST relays are normally
open and close when energized.
08 Channel-to-Channel Isolated Analog Inputs (Part# 6510)
The SeaRAQ™ 6510 supports two input analog voltage
ranges 0-5VDC and 0-10 VDC as well as 0-20mA input on
each of its 8 isolated channels.
08 Channel-to-Channel Isolated Analog Outputs (Part# 6520)
The SeaRAQ™ 6520 is an 8 channel-to-channel isolated 4-
20 mA loop-powered analog output card. Input voltage
range is 5.5V to 52V. User data is scaled so that 4.0 mA
output corresponds to a raw digital count of 0 and 20.0
mA corresponds to a count of 65535 (full 16-bit
resolution). When a fault is detected (DAC
communications, Vloop tolerance, etc.) the output is
automatically driven to the alarm current of 3.2 mA.

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Specifications
Mechanical Dimensions
Depth 8.50 inches (21.59 cm)
Width 19.00 inches (48.26 cm)
Height 5.50 inches (13.97 cm)
Environmental Specifications
Specification Operating Storage
Temperature Range -20 to 50 ºC (-40 to 185 ºF)1-40 to 85 ºC (-40 to 221 ºF)
Humidity Ramge 10 to 90% R.H. Non-Condensing 10 to 90% R.H. Non-Condensing
Operating Temperature Range
Part
Number COM Express Module
Operating Temperature
Range Comment
R31004 TCA/N2800 0 - 50 °C
Requires Industrial Temperature SSD for
operating temperatures above 35 °C with
no airflow or conduction.
-20C to 50 °C optional. Contact Sales
The R3 computer system is a fan-less, solid state computer that relies on thermal conduction to move heat
from internal components to the outside of the enclosure. Airflow around the computer assists with this
heat removal process. It is optimal to mount the computer in an area that has either natural or forced airflow
to constantly remove heat from the enclosure.
1Operating temperature is dependent on particular model. See the Operating Temperature
Range section for model capabilities.

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Power Supply
The power supply provided has a universal AC input. It provides 24 VDC @ 2.7 A max output to the R3
system. Typical power consumption varies depending on COM Express Module, memory capacity,
OS/software activity and peripheral devices. AC current draw will never exceed 1.4 A.
The included AC/DC power supply has an operational temperature range of 0 °C to 40 °C. If the
computer must be located in an environment greater than 40 °C, a different power source should
be used. Ensure the power source can supply the power listed below.
All necessary system voltages are generated from a single DC input capable of accepting 18 VDC to 36
VDC (fed by above DC power supply).
Acceptable System Input Voltage 18 VDC-36 VDC
DC Current Rating (Dependent on COM Express
Module, input voltage, application software load
and installed I/O cards)
375 mA-4400 mA

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Power Input
The R3 is designed to operate from 18 VDC up to 36 VDC. The current draw varies across this range and is
heavily dependent on the COM Express module, peripheral devices and installed software. The connector
at J11 is Molex PN 39-30-1040. Use Molex 39-01-2040 connector housing with Series 5556 Mini-Fit Jr crimp
terminals.
CKT # Signal Name
1 + Positive DC Power
2 + Positive DC Power
3 - Negative DC Power (GND)
4 - Negative DC Power (GND)

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System Operation
Power Button
The power button on the front of the computer can be used to turn the system on, shut the system down
or place the computer in sleep states S3 or S4 (depending on OS support and configuration). The power
button can also wake the system up from sleep states S3 or S4.
The power button has a 3 second hardware debounce/delay built in so accidental shutdown does not occur.
This 3 second delay is present at all times so the power button must be held for 3 seconds before system
power up, power down, sleep or wake occurs.
Power States
The R3 is designed to operate in 4 Power States as defined by ACPI.
S0 – Fully powered and operational
S3 – Suspended to memory (known as sleep in Windows)
S4 – Suspended to disk (known as Hibernate in Windows)
S5 – Powered down in standby (Windows Shutdown)
The system can transition from S0 to any of the three listed standby states (S3, S4 or S5) by either software
command or the Power Button. The system can then be awoken from either listed sleep/standby state by
holding the Power Button for 3 seconds. The system can also be awoken from S3 or S4 with a USB input
device such as a HID compliant keyboard or mouse.
To be awoken from a standby state with a USB device, the device must be present when the
computer enters the sleep state and must remain connected for the duration of the sleep state. .
These power states are supported by Windows 8, Windows 7, Windows Vista, and Windows XP.
Reset Button
The reset button at BP1 (located near the USB Type A and RJ45 connectors) generates a system level reset
(CPU included). Hold for 1 second to activate.
High Performance Serial Communication Ports
The R3 provides three high speed serial communication ports supporting data rates up to 921.6 kbps. Ports
1 and 2 are RS-232 serial ports. Port 3 is an RS-485 port for communication with equipment up to 4000 ft.
away from the computer or in noisy environments. The RS-485 2-wire mode is optimized for “Multi-Drop”
or “Party-line” operations selecting data from multiple peripherals (as many as 32 unit load devices can be
connected on an RS-485 bus).
In RS-485 mode, our special auto-enable feature allows the RS-485 ports to be viewed by the operating
system as a COM port. This allows the software application to utilize the serial port for RS-485

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communication without the need to control the direction of data between the master and slave device. Our
on-board hardware automatically handles the RS-485 driver enable.
Features of the serial ports include:
•16C954 buffered UARTs with 128-byte FIFOs
•Software configurable clock prescaler and divisor support wide range of baud rates
•Supports 9-bit protocol framing
•Each port supports data rates up to 921.6 kbps
•All modem control signals implemented on RS-232 ports
•RS-485 line termination, pull-up and pull-down resistors are selectable via dipswitch on Port 3
•Automatic RS-485 enable/disable in hardware on Port 3
•Uses Sealevel’s SeaCOM enhanced serial driver (Version 3.6.25 or newer)
Serial Port Setup
The R3 Serial Ports are assigned I/O addresses and IRQs by the COM Express module BIOS or by a “Plug-
n-Play” Operating System.
Clock Modes
The R3 Serial ports are implemented on a PCIe x1 lane and therefore derive a 62.5MHz clock from the PCI
express link which is divided by an 8 bit clock prescaler and a 16 bit clock divisor to provide a wide range
of possible baud rates. Note that there are many combinations that can give the same result (e.g.
Prescaler=1 and Divisor = 8, Prescaler =2 and Divisor = 4, or Prescaler=8 and Divisor = 1). As long as the
calculated data rate is within +/- 2% you should communicate fine.
Baud Rates
The following table shows some common data rates and the rates you should choose to achieve
them when using the R3 computer.
For This Data Rate Clock Prescaler Choose This Divisor DLM:DLL
1200 bps 3.625 898
2400 bps 3.625 449
4800 bps 1.875 434
9600 bps 1.875 217
19.2K bps 1.375 148
38.4K bps 1.375 74

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57.6K bps 22.625 3
115.2K bps 1 34
230.4K bps 1 17
460.8K bps 2.125 4
921.6K bps 2.125 2
Many non
-standard baud rates can be achieved by adjusting the Prescaler and Divisor. Contact
Sealevel Systems Technical Support for assistance in determining the correct parameters for
your
application.
Serial Port 3 Operation
Serial port 3 is the RS-485 serial port on the R3 system.
For RS-485 half-dupliex mode, set the jumper on J12 to pins 2-3 and, in the Device Manager Port
Properties Advanced tab, enable the “16950 RS-485 Enable” feature. The COM Express carrier
board must be removed to access the J12 and SW1 to configure Port 3.
See the Serviceable Parts section of the manual for steps to access the internal electronics.

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Typical settings for Serial Port 3 configuration options are shown below:
Switch Pin RS485 4 Wire RS485 2 Wire
J12 N/A Connect pins 1 and 2 Connect pins 2 and 3
SW1-1 T2ON ON
SW1-2 PU ON ON
SW1-3 PD ON ON
SW1-4 L OFF ON
SW1-5 L OFF ON
Switch
Name
Function
1
T
Adds or removes the 120 ohm termination.
2
PU
Adds or removes pull-up resistor in the RS-485 receiver circuit
3
PD
Adds or removes pull-down resistor in the RS-485 receiver circuit
4
L
Connects the TX+ to RX+ for RS-485 two-wire operation.
5
L
Connects the TX- to RX- for RS-485 two-wire operation.
2Termination, Pull-Up and Pull-Down may not be necessary depending on the equipment to
which the R3 Port 3 is connecting.

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CMOS Battery
The R3 includes a 3V DC type CR3032 battery that supplies the RTC and CMOS memory of the COM Express
CPU module.
Danger of explosion if battery is incorrectly replaced. Replace only with the same or
equivalent type recommended by the manufacturer. Dispose of used batteries according
to the manufacturer’s instructions.
To fulfill the requirements of EN 60950, the R3 incorporates two current-limiting devices (resistor and diode)
in the battery power supply path.

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System Description
The following I/O connectors use industry standard pin outs for maximum compatibility.
The Reference Designators are printed on the PCB and are provided for quick reference to the 12000
manual. See the 12000 (carrier board only) product manual for detailed connector descriptions.
Reference Designator Function Connector Type
P8 Video Output DisplayPort
P3 10/100/1000 (Gigabit Ethernet) Network
Connections
RJ45
P5 RS-232 Serial Ports DB9 Male
J2 USB 2.0 Device USB Type A
J5 USB 2.0 Device USB Type A
J6 USB 2.0 Device USB Type A
J8 USB 2.0 Device USB Type A
P2 Audio Input/output 3.5mm stereo headphone
CN1 PCIe Mini Card PCIe Mini card connector
P4 SATA Disk Drive 22 pin SATA

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Front Panel I/O Connectors
Rear Panel I/O Connectors

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Mechanical Drawings
Top View