InHand EC900 Series User manual
Edge Computer EC900 Series
User Manual
(Applicable for Debian10,IEOS V2.0.0 and above)
Version2.0, October 2023
www.inhandnetworks.com
The software described in this manual is provided according to the license
agreement and can only be used according to the terms of the agreement.
Copyright Notice
©2023 InHand Networks.All rights reserved.
Trademarks
The InHand logo is a registered trademark of InHand Networks.
All other trademarks or registered trademarks in this manual belong to
their respective manufacturers.
Disclaimer
InHand Networks reserves the right to change this manual, and the product
is subject to subsequent changes without prior notice. We will not be
responsible for any direct, indirect, intentional, or unintentional damages
and hidden dangers caused by improper installation and use.
Contents
1 Introduction............................................................................................................................................................. 5
2 Hardware installation instructions.................................................................................................................... 5
2.1 Introduction..................................................................................................................................................... 5
2.2 EC942 panel .................................................................................................................................................... 5
2.3 EC942 external connector........................................................................................................................... 6
2.3.1 Ethernet .................................................................................................................................................... 6
2.3.2 Serial port................................................................................................................................................. 7
2.3.3 CAN............................................................................................................................................................ 8
2.3.4 Switching Input interface (Digital Input) ........................................................................................ 8
2.3.5 Switching Output interface (Digital Output)................................................................................. 8
2.3.6 USB............................................................................................................................................................. 9
2.3.7 LED ...........................................................................................................................................................10
2.3.8 User programmable keys..................................................................................................................13
2.3.9 DC input .................................................................................................................................................13
2.3.10 SIM card slot.......................................................................................................................................13
2.3.11 MicroSD card slot..............................................................................................................................14
2.3.12 Restore factory keys .........................................................................................................................14
2.3.13 Switch the machine button............................................................................................................15
2.3.14 Antenna interface..............................................................................................................................15
2.3.15 Dial switch............................................................................................................................................17
2.3.15 mSATA hard disk interface.............................................................................................................17
3 Getting Started.....................................................................................................................................................18
3.1 Connect to the EC900................................................................................................................................18
3.1.1 Connecting via the SSH Console....................................................................................................19
3.2 User Account management .....................................................................................................................21
3.2.1 Switch to the root user ......................................................................................................................21
3.2.2 Creating and deleting user accounts............................................................................................22
3.2.3 Disable the default user account....................................................................................................22
3.3 Network administration and system administration........................................................................23
3.3.1 web Management based on IEOS .................................................................................................23
3.3.2 Linux-based command-line management.................................................................................39
4 Advanced configuration of peripheral interfaces .....................................................................................45
4.1 Serial Port.......................................................................................................................................................45
4.1.1 Change the serial port Settings ......................................................................................................46
4.1.2 View serial port information: ...........................................................................................................48
4.1.3 Set the baud rate of COM1 serial port:........................................................................................48
4.1.4 Set the baud rate of COM2 serial port.........................................................................................49
4.2 the USB interface.........................................................................................................................................49
4.2.1 USB auto-mount .................................................................................................................................49
4.2.2 micro SD card mounts automatically............................................................................................50
4.2.3 mSATA hard disk mounts automatically......................................................................................50
4.3 CAN bus interface .......................................................................................................................................52
4.3.1 Configure the connection CAN interface ....................................................................................53
4.4 IO Debugging...............................................................................................................................................53
4.5 GPS...................................................................................................................................................................54
4.6 Toggle the machine button .....................................................................................................................55
4.6.1 Turn off the device..............................................................................................................................55
4.6.2 Boot the device ....................................................................................................................................55
5 Safety.......................................................................................................................................................................55
5.1 sudo mechanism.....................................................................................................................................55
5.2 Firewalls......................................................................................................................................................56
5.3 TPM2.0........................................................................................................................................................56
6 The system restores factory Settings and updates...................................................................................57
6.1 Restore factory Settings........................................................................................................................57
6.2 System Upgrades....................................................................................................................................58
7 Programming Guidelines ..................................................................................................................................58
A guide to IO Programming...........................................................................................................................63
7.2 Led Programming Guide ..........................................................................................................................64
7.3 Cross-compilation.......................................................................................................................................66
1 Introduction
This user's manual is for the EC900 series of edge computers based on the
Arm architecture and covers a complete set of instructions for all
supported models. Before referring to these sections, verify that the
hardware specifications of your computer model support the
features/Settings covered.
2 Hardware installation instructions
In this chapter, we will cover the hardware installation instructions for
the EC900 series of edge computers based on the Arm architecture.
2.1 Introduction
The following sections describe the application of external connectors and
pin distribution of the EC942 series, using the EC942 series as an example.
2.2 EC942 panel
Top surface panel
Front panel
2.3 EC942 external connector
2.3.1 Ethernet
This is a dual RJ45 connector for Ethernet connection
The EC942 has 2 RJ45 Ethernet ports and supports 10M/100M/1000M adaptive rates.
Green light: LINK indicator, 1000M interface is on for the end device, and 10/100M
interface is off for the end device.
Yellow light: ACT light, flashing when there is data
2.3.2 Serial port
EC942 supports two-channel serial port, support RS-232 or RS-485 or RS-422
communication, software can be configured.
DB9 pin
number
Pin name
Pin Definition
1
2
RS-232 RxD/RS-422 TxD+ RS-232 receive /RS-422 send positive
3
RS-232 TxD/RS-485 B/RS-422
RxD-
RS-232 send /RS-485 signal B/RS-422
receive negative
4
5
GND RS-232 ground
6
7
RS-485 A/RxD+ RS-485 signal A/RS-422 receive positive
8
RS-422 TxD- RS-422 send negative
9
2.3.3 CAN
EC942 has 1-way CAN bus interface and supports CAN 2.0A/B standard. It is
compatible with CAN FD and can achieve a maximum rate of 5Mbps.
Signage
Features
CAN_H CAN high level data line
CAN_L CAN low level data line
GND to
2.3.4 Switching Input interface (Digital Input)
Interface identification
Features
Description
PCOM
Power common terminal
4
-way digital input DI,
Dry contact state
"1" : Closed dry contact state
"0" : disconnected
Wet contact state "1" :+10~+30V/
-
30 ~
-10VDC
Wet contact state "0" : 0 ~ +3V/
-
3 ~ 0V
Isolate 3000VDC
DGND
Power reference ground
DICOM Input public side
DI0 Digital input port 0
DI1 Digital input port number 1
DI2 Digital input port number 2
DI3 Digital input port number 3
NC There is no
2.3.5 Switching Output interface (Digital Output)
Interface identification
Features
Description
DO0 Digital output port 0
4 digital output DO,
Isolated 3000VDC
DGND Ground end
DO1 Digital output port number 1
DGND Ground end
DO2 Digital output port 2
DGND Ground end
DO3 Digital output port No. 3
DGND Ground end
2.3.6 USB
The EC942 provides two USB 2.0 Host ports.
2.3.7 LED
EC942 has 12 LED lights to indicate the power supply and system operation
status respectively.
Signage
Name
Definition
PWR
Power indicator
Power on and always on
STATUS
System operating status
indicator light
When the system starts normally,
the STATUS blinks. If the system
fails to start due to an
exception in the system startup
phase; Or when the factory
recovery
operation has not been
completed, STATUS is long out.
WARN
Warning indicator light
The WARN light flashes when
there is a warning exception in
the system and the system
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