Logic IO RTCU LX5 pro User manual

Technical Manual
Version 1.00
RTCU LX5 pro
Advanced Industrial M2M/IoT Gateway

RTCU LX5 pro Technical Manual V1.00
Advanced Industrial M2M/IoT Gateway
Logic IO ApS. Ph: ([phone]
Holmboes Allé 14 Fax: [phone]
8700 Horsens Page 2 of 37 Email: [e-mail]
Denmark www.logicio.com
Introduction
The RTCU LX5 pro is a powerful M2M/IoT Gateway device that rests on an entirely new hardware
and software architecture representing a significant leap in functionality, power, openness, and
performance. The RTCU LX5 pro has been designed for the most demanding M2M and Industrial
Internet of Things applications that dictate the most advanced product available on the market.
The device is based on the new NX32L (NX32 for Linux) architecture that embraces many new
technologies and at the same time maintains full backward compatibility, which ensures already
implemented and tested NX32 applications can execute without changes.
The RTCU LX5 pro device has been designed to meet the ever-increasing security challenges. It
offers full TLS on all major protocols and includes a hardened protected execution environment
with dual-boot and automatic fallback and recovery.
The RTCU LX5 pro can also operate as a secure and intelligent industrial router/firewall for
LAN/WLAN side clients connecting to the Internet over the cellular interface.
This manual contains technical documentation covering the installation and usage of the RTCU
LX5 pro device. For detailed information on the product's programming and software
configuration, please refer to the RTCU IDE documentation.
For detailed information on the powerful RTCU M2M Platform, please refer to the
RTCU M2M Platform datasheet.

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Table of contents
Introduction...................................................................................................................................................................... 2
Important Information .................................................................................................................................................... 4
Technical Highlights........................................................................................................................................................ 5
RTCU LX5 pro Overview ............................................................................................................................................... 7
Power and I/O Connector ..........................................................................................................................9
Communication Connector......................................................................................................................10
Mini USB-B Connector .............................................................................................................................10
Ethernet / LAN ..........................................................................................................................................10
DIN Rail Mounting........................................................................................................................................................ 11
Power Supply ................................................................................................................................................................. 11
Digital outputs ............................................................................................................................................................... 12
Digital Inputs / Ignition Input...................................................................................................................................... 13
Analog Inputs................................................................................................................................................................. 14
CAN bus port ................................................................................................................................................................. 15
RS232 port....................................................................................................................................................................... 16
RS485 Port....................................................................................................................................................................... 16
1-Wire bus....................................................................................................................................................................... 17
3D movement sensor..................................................................................................................................................... 18
LED Indicators ............................................................................................................................................................... 19
User LED A ................................................................................................................................................19
System LED S1 and S2..............................................................................................................................19
System Reset Switch ...................................................................................................................................................... 21
Rechargeable Li-Ion Backup Battery ........................................................................................................................... 22
LTE Cat. 4 Cellular Engine ........................................................................................................................................... 23
SIM-Card......................................................................................................................................................................... 23
WLAN ............................................................................................................................................................................. 23
ISM RF ............................................................................................................................................................................. 24
Antennas ......................................................................................................................................................................... 25
Cellular Antenna .......................................................................................................................................25
GNSS antenna............................................................................................................................................25
WLAN Antenna.........................................................................................................................................25
RF Antenna.................................................................................................................................................25
Micro SD-CARD reader ................................................................................................................................................ 26
Approved SD-CARDs...............................................................................................................................26
Product Identification Label with Barcode................................................................................................................. 27
Power Consumption...................................................................................................................................................... 28
Appendices ..................................................................................................................................................................... 30
Appendix A –Assembling/disassembling the device .........................................................................30
Appendix B –Installing the SIM-Card...................................................................................................31
Appendix C –Installing the Micro SD card...........................................................................................32
Appendix D –Device Configuration Guide..........................................................................................33
Appendix E - Open Source Disclaimer ..................................................................................................35
RTCU LX5 pro Specifications....................................................................................................................................... 36

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Important Information
Thank you very much for using a product from Logic IO Aps. Our products are designed for
professional use, and therefore this manual assumes technical knowledge and practice working
with such products.
This documentation does not entail any guarantee on the part of Logic IO Aps with respect to
technical processes described in the manual or any product characteristics set out in the manual.
We do not accept any liability for any printing errors or other inaccuracies in the manual, unless it
can be proven, that we are aware of such errors or inaccuracies, or that we are unaware of these as
a result of gross negligence and Logic IO Aps has failed to eliminate these errors or inaccuracies
for this reason.
This product is a complex and sensitive electronic product. Please act carefully and ensure
that only qualified personnel will handle and use the device. In the event of damage to the device
caused by failure to observe the information in this manual and on the device, Logic IO Aps shall
not be required to honor a warranty claim even during the warranty period and shall be exempted
from the statutory accident liability obligation. Any attempts to repair or modify the product also
voids all warranty claims. Do not open the product. There is no user-serviceable part inside.
Please contact Logic IO for any technical or commercial inquiries:
Logic IO Aps.
Holmboes Alle 14
8700 Horsens
Denmark
Phone: [phone]
Support: suppo[email protected]
URL: www.logicio.com

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Technical Highlights
Platform:
➢Based on the RTCU M2M Platform.
➢NX32L (NX32 for Linux) execution architecture.
oRTCU IDE development tool.
oOperates under a full and highly optimized Linux variant.
oOpen and extendable with Platform SDK.
LX Hardware Core:
➢Cortex-A7 32-bit ARM processor operating at up to 1 GHz.
➢Cortex-M4 32-bit co-processor for advanced power-management.
➢Hardware floating-point and DSP instructions.
➢128 MByte RAM.
➢512 MByte NAND Flash (system boot, persistent memory, and file-systems).
➢Real-time clock with dedicated backup battery.
Security:
➢Embedded firewall.
➢Port forward and NAT services.
➢TLS/SSL support with full certificate management.
➢TLS/SSL supporting all significant TCP protocols, such as RCH, FTP, SMTP, MQTT, and sockets.
➢Hardware assisted encryption/authentication: AES-128, AES-192, AES-256, DES, TripleDES, HASH,
RND and RSA signature.
Wireless Communication:
➢LTE Cat. 4 Multi-Band Cellular Engine.
➢Internal SIM-card reader with support for eSIM.
➢Wireless LAN (Wi-Fi).
➢Medium range ISM band RF transceiver with an on-board antenna.
➢Multi-constellation GNSS with GPS, GLONASS, and GALILEO.
Wired Communication:
➢100 Mbps Ethernet LAN interface.
➢1 x Full CAN 2.0B controller with hardware filtering and multi-speed support.
➢1-Wire bus for accessories such as ID-button reader, temperature sensors, etc.
➢1 x RS232 channel.
➢1 x RS485 channel.
I/O Interfaces:
➢3 x digital inputs.
➢4 x solid-state open-drain digital outputs.
➢3 x analog inputs with 0..10 volt / 0..20 mA with 12 bit precision.
➢Expandable I/O with standard Modbus modules.
Sensors:
➢3-axis Accelerometer with 16g scale.
➢Temperature sensor.
User Interaction:
➢3 x bi-color LED.
➢High-speed Mini-USB service-port connector.

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Audio:
➢Fully digitized audio system.
➢Transfer, store, and play audio.
➢Digitized cellular audio.
➢DTMF support for Interactive Voice Response applications.
Storage:
➢Internal flash drive with up to 128 MByte capacity.
➢Persistent memory and circular datalogger.
➢Micro SD-Card reader.
Power and Battery:
➢Operating voltage from 8 to 36VDC.
➢On-board 2 Ah Li-Ion battery with intelligent charging.
Encapsulation:
➢Housed in a compact UL94 V0 grade PC fire-resistant plastic encapsulation.
➢DIN rail mounting option.
Regulatory Approvals:
➢Radio Equipment Directive, RED 2014/53/EU.
➢EMC Directive, 2014/30/EU.
➢2011/65/EU RoHS Directive.

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RTCU LX5 pro Overview

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On the frontside of the device, the Ethernet, Communication, and Programming ports are found.
Also located on the front side is the Power and I/O connector.
Frontside
On the backside of the device, the LTE, WLAN, and GNSS antenna connectors are found. Also
located on this side is the small hole for the reset button.
Backside
Inside the encapsulation, the SIM-card / Micro SD-card readers and various
configuration/termination jumpers are located.
For convenience and easy installation, the front of the devices contains all connectors'
documentation and includes several tables for its layout.
LTE Antenna
Reset button
GNSS Antenna
WLAN Antenna
Power and I/O connector
Prog. port
Communication
port
Ethernet port

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Power and I/O Connector
AIN3
8
16
AGND
AIN1
7
15
AIN2
CAN-H
6
14
CAN-L
GND
5
13
DOUT4
DIN3
4
12
DOUT3
DIN2
3
11
DOUT2
DIN1
2
10
DOUT1
XPWR
1
9
XGND
16 pin I/O connector overview
Pin
Name
Description
1
XPWR
Power supply, positive (+) connection
2
DIN1/IGN
Digital input 1 / Ignition input
3
DIN2
Digital input 2
4
DIN3
Digital input 3
5
GND
System ground
6
CAN-H
CAN bus H-signal
7
AIN1
Analog input 1
8
AIN3
Analog input 3
9
XGND
Power Ground
10
DOUT1
Digital output 1
11
DOUT2
Digital output 2
12
DOUT3
Digital output 3
13
DOUT4
Digital output 4
14
CAN-L
CAN bus L-signal
15
AIN2
Analog input 2
16
AGND
Analog Ground

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Communication Connector
RS232 TXD
1
RS232 RXD
2
RS485 RSA
3
GND
4
1-Wire LED
5
RS485 RSB
6
1-Wire
7
GND
8
RJ45 communication connector
Pin
Name
Description
1
RS232 TXD
RS232 Transmit Data
2
RS232 RXD
RS232 Receive Data
3
RS485 RSA
RS485 non-inverting signal
4
GND
Signal input 3
5
1-Wire LED
1-Wire ID-Button LED
6
RS485 RBS
RS485 inverting signal
7
1-Wire
1-Wire bus
8
GND
Signal Ground
Mini USB-B Connector
This USB port is for programming and communication with the RTCU IDE (RACP compliant
application). A standard USB cable can be used between the device and the PC.
Ethernet / LAN
This is a standard 10Base-T/100Base-TX IEEE 802.3 compliant RJ45 Ethernet connector.
Please use an appropriate connector and cable, such as a standard CAT-5 twisted pair patch cable
The connector has the following LED indicators shows the LINK status and communication
activity.

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DIN Rail Mounting
The RTCU LX5 pro can be delivered in a version suitable for mounting on a standard DIN rail
according to IEC/EN 60715.
On the bottom side of the device the DIN rail clip allows attaching to the DIN rail.
Power Supply
The RTCU LX5 pro device must be supplied with 8..36 VDC from an external DC power source.
Positive power is applied to the XPWR pin, and the ground to the XGND pin.
There are three different ground labels for ground connections: Supply ground (XGND), signal
ground (GND), and analog ground (AGND).
The signal and the analog grounds are filtered from the power ground. Power ground must only
be used as a power supply return path.
The RTCU LX5 pro contains an internal backup battery, which will supply the RTCU if the
external power supply fails or is disconnected. By default, the RTCU is powered down when a
power failure occurs. This setting, however, can be changed. Please consult the RTCU IDE on-line
help for more information. When the wakeup/ignition inputs are activated with a logical high, the
RTCU LX5 pro device will wake up in power-down mode.
Power supply pins
Pin
Name
Description
1
XPWR
Power supply, positive (+) connection
9
XGND
Power ground, negative (-) connection

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Digital outputs
The digital outputs control four open-drain switches. They function like a contact, where one side
is connected to the digital output, and the other side is to the ground internally in the RTCU unit.
The switches are protected against short circuit and ESD.
The digital output control circuit is supplied from both the external power supply and the internal
lithium-ion battery. Therefore, the digital outputs can be controlled even if the external power
supply is not present.
The RTCU unit offers advanced power management that can have one or more outputs enabled
while the RTCU is in low power mode. Please consult the RTCU IDE documentation for additional
information.
16 pin I/O connector overview.
Pin
Name
Description
10
DOUT 1
Digital output 1
11
DOUT 2
Digital output 2
12
DOUT 3
Digital output 3
13
DOUT 4
Digital output 4
Specification for each digital output
Type
Min.
Max.
Unit
Open-drain
0
36
VDC
Short-circuit, Overload, Overvoltage, and ESD protected
-
1
A
-
600
mΩ
On-state resistor per channel

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Digital Inputs / Ignition Input
The digital inputs are all low-pass filtered and transient protected. To activate the inputs, connect a
positive voltage between the input and the GND connector.
Please note: The DIN 1/IGN input is unique as it also functions as the ignition input. If the ignition
input is activated with a logically high or low (Wait For Event mode only), it will wake up the unit
when the RTCU is in low power mode. A power apply will also wakeup the unit, if it is in power-
down mode or WaitForEvent mode with power Apply and/or ignition selected for wakeup.
The power management allows the possibility to configure a wakeup on one or more digital inputs
with individually configured falling- or rising edge detection. Please consult the RTCU IDE
documentation for additional information.
16 pin I/O connector overview.
Pin
Name
Description
2
DIN 1/IGN
Digital input 1 / Ignition input.
3
DIN 2
Digital input 2
4
DIN 3
Digital input 3
5
GND
Signal Ground
Specification for each digital input:
Min.
Typ.
Max.
Unit
Logic "High"
8
12
40
VDC
Protected against transients and
low-pass filtered
Logic "Low"
-5
-
3
VDC
Bandwidth
-
7
-
kHz
Input impedance
-
14
-
kΩ

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Analog Inputs
The RTCU LX5 pro has three analog inputs, which can be configured individually to work either
as voltage or current measurement inputs by using the configuration jumpers. The range in
voltage mode is 0.10 VDC, and in current mode 0-20mA.
The conversion resolution is 12 bit.
The input signal is connected between AINx and AGND. AGND must be connected to the
reference of the connected equipment. Please be aware that deviations may occur, as the system is
very noise-sensitive. Avoid long unshielded wires and significant fast-changing signals routed
parallel to the analog signals.
The inputs are low-pass filtered, ESD- and transient protected.
By default, the inputs are configured as voltage inputs. For replacement and configuration of the
hardware jumpers inside the device, please refer to the device configuration guide in Appendix D.
16 pin I/O connector overview.
Pin
Name
Description
7
AIN 1
Analog input 1
15
AIN 2
Analog input 2
8
AIN 3
Analog input 3
16
AGND
Analog Ground
Specification for each analog input (voltage mode):
Min.
Typ.
Max.
Unit
Voltage
0
-
10
VDC
Protected against transients and
low-pass filtered
Resolution
-
-
12
Bit
Precision
-
0.4
0.6
%FSR
Cut-off frequency
-
4.5
-
kHz
Input impedance
-
40
-
kΩ
Specification for each analog input (current mode):
Min.
Typ.
Max.
Unit
Current
0
-
20
mA
Protected against transients and
low-pass filtered
Resolution
-
-
12
Bit
Precision
-
0.4
0.6
%FSR
Cut-off frequency
-
4.5
-
kHz
Input impedance
-
504
-
Ω

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CAN bus port
The RTCU provides the physical layer for the CAN (Controller Area Network) serial
communication interface in accordance with the ISO 11898 standard. The CAN bus is designed for
high-speed (up to 1Mbit) robust communication in especially harsh environments like those found
in the automotive industry.
The CAN interface can be connected to an existing CAN network with a common protocol like the
J1939 standard to retrieve information for surveillance or information purposes. The interface can
also be used as a robust serial data link with a non-standard protocol. Please consult the RTCU IDE
documentation for more information.
The physical layer consists of a two-wire (CAN-H and CAN-L) differential bus and a signal
ground for reference.
If the RTCU is connected to a "non-existing" network, a 120 ohm resistor must be connected
between CAN-H and CAN-L on each end of the transmission line in order to terminate it and
avoid signal reflections. This resistor can be connected by activating the software jumper in the
user application. Please consult the RTCU IDE document for the software jumper for a detailed
description.
Be aware that connecting the RTCU to a CAN network can be dangerous. If the RTCU is not
configured with the correct network parameters, it will lead to network corruption and may
interfere with other connected equipment on the bus. Especially in vehicles, great precautions
must be observed to prevent communication interruptions.
By default, the write capability on the CAN bus is disabled. This can be enabled by the jumper
located internal in the device. Please refer to Appendix D for the configuration details.
16 pin I/O connector overview.
Pin
Name
Description
6
CAN-H
CAN-bus H-signal
14
CAN-L
CAN-bus L-signal
5
GND
Signal Ground

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RS232 port
This port can be used as a general-purpose RS232 serial port with no hardware handshake signals.
RJ45 connector overview.
Pin
Name
Description
1
RS232 TXD
Transmit Data from serial port, RS232 compatible
2
RS232 RXD
Receive Data for serial port, RS232 compatible
4
GND
Signal Ground
RS485 Port
RS485 is a multi-drop network with a maximum of 32 nodes connected simultaneously to the bus.
The RS485 bus contains an RSA and an RSB signal and a signal ground, which must always be
connected to the common signal ground for all nodes connected to the RS485 bus!
The maximum cable length for the RS485 bus is according to the EIA/TIA-485-A standard (max.
1000m @ <100kbit); this limit is highly influenced by the quality of the cable, signaling rate, noise
etc.
At longer cable lengths, noisy environments, or high communication speeds, it might be necessary
to terminate the transmission line with a 120
1
ohm resistor at each end of the transmission line to
terminate it and avoid signal reflections. If the RTCU LX5 pro is used as an endpoint node, the
jumper for the RS485 port can be inserted in order to terminate the RS485 communication lines
with 120Ω. By default, the RS485 communication lines are not terminated with 120 Ω.
Please note: For best performance, protection, and noise immunity, it is advised to use a shielded
cable to connect the device to the RS485 communications bus.
RJ45 connector overview
Pin
Name
Description
3
RSA
RS485 non-inverting signal for RS485 port
6
RSB
RS485 inverting signal for RS485 port
8
GND
Signal ground
1
Assuming use of a CAT5 twisted pair cable

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1-Wire bus
The 1-Wire bus is available on the RJ45 communication connector. All 1-Wire communication goes
through a single connection, and all 1-Wire devices connected can retrieve power directly from the
bus (called parasitic power). For this, only two wires are needed –the 1-wire signal and the ground
reference –allowing minimal cable installations.
For 1-Wire ID-Button readers, which include a built-in LED, a dedicated output is available for this
purpose. Please consult the RTCU IDE documentation for further information.
RJ45 connector overview.
Pin
Name
Description
7
1Wire
1-Wire bus for ID-Button / Temperature sensor
5
1W-LED
1-Wire ID-Button LED
8
GND
Signal Ground
Specification of the 1-Wire bus:
Max.
Unit
Total weight1
65
m
1 The term of weight has been described in “Modular 1-wire concept –Technical Manual” document.

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3D movement sensor
The RTCU LX5 pro device contains a 3-axis accelerometer to detect vibration and motion. It makes
it possible to detect movement and position change in 3 directions, X-Y-Z with force as high as 16g
in acceleration. The most straightforward use is with the power management detecting when the
vehicle is moved and the most advanced analytical applications such as driving behavior/eco-
driving.
Please consult the RTCU IDE documentation for more detailed information.
The positions of the 3-axis are as following:
Specification:
Unit
Resolution
Precision
±16
12
g
bit
The acceleration can be set as relative to motion,
or relative to earth gravity
+X
+Z
+Y

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LED Indicators
Three bi-colored (red and green) indicators are present on the device top.
One bi-colored LED (A and B) is available to the user, and the remaining two LEDs (S1 and S2) are
signaling the status and possible errors of the RTCU device.
User LED A
LED A is composed of two individually controllable LEDs:
•LED named A on the front consists of LED 1 (green) and LED 2 (red).
The LEDs are easily accessed from within the application program, and it is possible to mix the
LEDs to obtain a third color: yellow. Please consult the RTCU IDE documentation for more
information.
System LED S1 and S2
The RTCU is equipped with two system LEDs, which show the status and possible errors of the
RTCU device.
The different patterns are listed in the table below. If the color of the system LED S1 is yellow, the
device actively communicates with the RTCU IDE (or another program supporting the RTCU
RACP protocol).
The LED S2 signifies either the cellular engine activity or all other LEDs are off, that the RTCU is in
the "wait for event" low power state.

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S1: System LED1 pattern overview
Pattern
Description
Fastest blinking, green
The device is initializing, preparing to start the application.
Fast blinking, green
S2 On, green
The device is installing an update. Depending on the kind
of update, it may take some time. The progress can also be
observed on the display.
Fast blinking, green1
The device has been forced into recovery mode with the use
of the system switch. The application is not executing.
500ms On / 500ms Off green3
The device is executing the application program
1.5s On / 0.5s Off. green3
The device is executing the application program, while
charging the internal backup battery.
Fast blinking, red3
A runtime error has been detected in the program.
Use the RTCU IDE to obtain the fault log.
Alternating Fast/Slow, red3
The device has lost its firmware. This can only happen if,
during a firmware upgrade, the RTCU device loses power
or the communication is lost completely. In this case, simply
upload the firmware to the device again.
75ms On / 925ms Off, green
Execution speed is different from full-speed.
On yellow (All other Leds OFF)
The device is booting, initializing the system
S2: System LED2 pattern overview (Cellular activity and "Wait For Event")
Pattern
Operating Status
Off
The cellular engine is turned off
600 ms On / 600 ms Off green
Missing SIM card or PIN code.
Network search and logon in progress.
75 ms On / 3 s Off green
Logged on to the network.
75 ms On / 75 ms Off /
75 ms On / 3 s OFF green
A GPRS/data session is active.
Flashing green
Indicates data transfer.
On green
A voice session is active.
On green (and all other LEDs OFF)
The system is booting.
On yellow (and all other LEDs
OFF)
The system is booting into recovery mode.
On red (and all other LEDs OFF)
The system is booting into monitor mode.
10 s OFF / 50 ms ON green
(and all other LEDs OFF)
The RTCU device is in a low-power "Wait For Event" state.
1
Or yellow when communicating with the RTCU IDE or another program, supporting the RTCU RACP protocol).