ED-HMI2120-070C Industrial Automation and Controls
“
Specifications:
- Model: ED-HMI2120-070C
- Screen Size: 7-inch
- Processor: Raspberry Pi CM4
- Interfaces: HDMI, USB 2.0, RS232, RS485, audio, Ethernet
- Network Support: Wi-Fi, Ethernet, 4G
- Power Input: 9V~36V DC
- Resolution: Up to 1024×600
Product Usage Instructions:
1. Installation:
1. Place the device on a stable surface.
2. Use the provided installation holes of buckle to securely fix
the device in place.
2. Power Connection:
1. Connect the DC input using the provided 2-Pin 3.5mm pitch
phoenix terminals with screw holes.
2. Ensure the power input is within the range of 9V~36V for
proper functioning of the device.
3. Interface Connections:
1. Connect external devices to the RS232 and RS485 ports for
third-party control equipment.
2. Use the HDMI port for high-definition display output
compatible with HDMI 2.0 standard.
3. Utilize the Ethernet ports for network connectivity.
4. User Indicators:
1. Customize user status using the green user indicator based on
application requirements.
2. Check device working status with the green system status
indicator.
3. Monitor power status with the red power indicator.
5. Audio Connectivity:
1. Use the Audio input/Stereo output for microphone input or
line output as needed.
Frequently Asked Questions (FAQ):
Q: Can I use the device without connecting to a network?
A: Yes, the device can be used independently without network
connectivity for standalone applications.
Q: What is the purpose of the supercapacitor in the
product?
A: The supercapacitor serves as a backup power supply to ensure
continuous operation during power outages or interruptions.
Q: How do I customize the status indicators?
A: Refer to the user manual for instructions on customizing the
status indicators based on your specific application needs.
“`
ED-HMI2120-070C
User Manual
by EDA Technology Co., Ltd built: 2025-08-01
ED-HMI2120-070C
1 Hardware Manual
This chapter introduces the product overview, packing list, appearance, button, indicator and interface.
1.1 Overview
ED-HMI2120-070C is a 7-inch high reliability industrial HMI based on Raspberry Pi CM4. According to different application scenarios and user needs, different specifications of RAM and eMMC computer systems can be selected.
· Options for 1GB, 2GB, 4GB and 8GB RAM · Options for 8GB, 16GB and 32GB eMMC storage
ED-HMI2120-070C provides common interfaces such as HDMI, USB 2.0, RS232, RS485, audio and Ethernet, and supports access to the network through Wi-Fi, Ethernet and 4G. EDHMI2120-070C integrates supercapacitor (backup power supply, which is optional), RTC, Watch Dog, EEPROM and encryption chip, improving the ease of use and reliability of the product. It is mainly used in industrial control and IOT.
1.2 Packing List
· 1x ED-HMI2120-070C Unit · 1 x Mounting Kit (including 4 x buckles, 4xM410 screws and 4xM416 screws) · [optional Wi-Fi/BT version] 1x 2.4GHz/5GHz Wi-Fi/BT Antenna · [optional 4G version] 1x 4G/LTE Antenna
1.3 Appearance
Introducing the functions and definitions of interfaces on each panel.
1.3.1 Front Panel
Introducing the front panel interface types and definitions.
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ED-HMI2120-070C
NO.
Function Definition
1 x LCD display, 7-inch LCD touch screen, which supports up to 1024×600 resolution and multi-point 1
capacitive touchscreen.
2
1 x camera (optional), 8 Megapixel front camera.
1.3.2 Rear Panel
Introducing the types and definitions of the rear panel interface.
NO.
Function Definition
1
4 x installation holes of buckle, which are used to fix the buckles to the device for installation.
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1.3.3 Side Panel
Introducing the types and definitions of side panel interfaces.
ED-HMI2120-070C
NO.
Function Definition
1
1 x green user indicator, user can customize a status according to actual application.
2
1 x green system status indicator, which is used to check the working status of device.
3
1 x red power indicator, which is used to check the status of device power-on and power-off.
4
1 x green 4G indicator, which is used to check the status of 4G signal.
5
4 x green UART indicators, using to check the communication status of UART port.
1 x DC input, 2-Pin 3.5mm pitch phoenix terminals with screw holes. 6
It supports 9V~36V input, the signal is defined as VIN+/GND.
1 x Audio input/Stereo output, 3.5mm audio jack connector. It can be used as MIC IN and LINE OUT.
7
· When a headphone is connected, the audio output is switched to the headphone.
· When a headphone is not connected, the audio output is switched to the speaker.
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ED-HMI2120-070C
NO.
Function Definition
2 x RS232 ports, 6-Pin 3.5mm pitch phoenix terminals, which is used to connect third-party control 8
equipment.
2 x RS485 ports, 6-Pin 3.5mm pitch phoenix terminal, which is used to connect the third-party control 9
equipment.
1 x 10/100/1000M adaptive ethernet port, RJ45 connector, with led indicator.It can be used to access the 10
network.
1 x 10/100M adaptive ethernet port, RJ45 connector, with led indicator. It can be used to access the 11
network.
1 x HDMI port, type A connector, which is compatible with HDMI 2.0 standard and supports 4K 60Hz. 12
It supports to connect a displayer.
13
2 x USB 2.0 ports, type A connector, each channel supports up to 480Mbps transmission rate.
14
1 x Reset button, pressing the button will reset the device.
15
1 x Wi-Fi/BT antenna port, SMA connector, which can connect to Wi-Fi/BT antenna.
16
1 x 4G antenna port, SMA connector, which can connect to 4G antenna.
17
1 x Micro USB port, which supports to flash to eMMC for the system.
18
1 x Nano SIM slot, which is used to install a SIM card for getting 4G signal.
19
1 x Micro-SD card slot, which is used to install SD card for storing user data.
1.4 Button
ED-HMI2120-070C includes a RESET button, which is a hidden button, and the silkscreen on the case is “RESET”. Pressing the RESET button will reset the device.
1.5 Indicator
Introducing the various statuses and meanings of indicators contained in ED-HMI2120-070C.
Indicator PWR ACT
Status On
Blink
Off Blink Off
Description The device has been powered on. Power supply of the device is abnormal, please stop the power supply immediately. The device is not powered on. The system started successfully and is reading and writing data. The device is not powered on or does not read and write data.
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ED-HMI2120-070C
Indicator USER 4G Yellow indicatorof Ethernet port
Green indicatorof Ethernet port COM1~COM4
Status On
Off
On Off On Blink Off On Blink Off On/Blink Off
Description User can customize a status according to actual application. The device is not powered on or not defined by the user, and the default status is off. The dial-up is successful and the connection is normal. 4G signal is not connected or the device is not powered on. The data transmission is abnormal. Data is being transmitted over the Ethernet port. The Ethernet connection is not set up. The Ethernet connection is in the normal state. The Ethernet connection is abnormal. The Ethernet connection is not set up. Data is being transmitted. The device is not powered on or there is no data transmission.
1.6 Interface
Introducing the definition and function of each interface in the product.
1.6.1 Card Slot
ED-HMI2120-070C includes an SD card slot and a Nano SIM card slot.
1.6.1.1 SD Card Slot
The silkscreen on the case of Micro SD card slot is ” “, which is used to install SD card for storing user data.
1.6.1.2 SIM Card Slot
The silkscreen on the case of Nano SIM card slot is ” “, which is used to install SIM card for obtaining 4G signals.
1.6.2 Power Supply Interface
The ED-HMI2120-070C includes one power input, 2-Pin 3.5mm pitch phoenix terminals with screw holes. The silkscreen of port is “VIN+/GND”, and the pins are defined as follows.
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ED-HMI2120-070C
Pin ID 1 2
Pin Name GND 9V~36V
1.6.3 Audio Interface
ED-HMI2120-070C includes one audio input, the connector is a 3.5mm 4-pole headphone jack. The silkscreen of port is ” “, which supports OMTP stereo headphone output and mono microphone recording.
· When the headphone is connected, the audio output is switched to the headphone. · When the headphone is not connected, the audio output is switched to the speaker.
1.6.4 Speaker
The ED-HMI2120-070C contains a power amplifier output, built-in a 4 3W speaker, supporting single-channel stereo output. When playing audio, if the headphone is connected to the Audio interface, the speaker will have no audio output.
1.6.5 RS232 Interface
ED-HMI2120-070C include 2 RS232 ports, 6-Pin 3.5mm pitch phoenix terminals. The silkscreen of single RS232 is “IGND/TX/RX”. Pin Definition Terminal pins are defined as follows:
Pin ID 1 2 3 4 5 6
Pin Name GND GND RS232-1_TX RS232-3_TX RS232-1_RX RS232-3_RX
The pin names of CM4 corresponding to RS232 interface are as follows:
Signal RS232-1_TX RS232-3_TX
CM4 GPIO Name GPIO4 GPIO0
CM4 Pin Out UART3_TXD UART2_TXD
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Signal RS232-1_RX RS232-3_RX
CM4 GPIO Name GPIO5 GPIO1
Connecting Cables Schematic diagram of RS232 wires is as follows:
CM4 Pin Out UART3_RXD UART2_RXD
ED-HMI2120-070C
1.6.6 RS485
ED-HMI2120-070C include 2 RS485 ports, 6-Pin 3.5mm pitch phoenix terminals. The silkscreen of single RS485 is “IGND/A/B”. Pin Definition Terminal pins are defined as follows:
Pin ID 1 2 3 4 5 6
Pin Name GND GND RS485-2_A RS485-4_A RS485-2_B RS485-4_B
The pin names of CM4 corresponding to RS485 interface are as follows:
Signal RS485-2_A RS485-4_A RS485-2_B RS485-4_B
CM4 GPIO Name GPIO12 GPIO8 GPIO13 GPIO9
CM4 Pin Out UART5_TXD UART4_TXD UART5_RXD UART4_RXD
Connecting Cables Schematic diagram of RS485 wires is as follows:
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ED-HMI2120-070C
RS485 terminal resistance configuration ED-HMI2120-070C contain 2 RS485 ports. A 120R jumper resistor is reserved between A and B of RS485 line. The jumper cap can be inserted to enable the jumper resistor. By default, the jumper cap is not connected, and the 120R jumper resistor function is disabled. The position of jumper resistor in the PCBA are J24 and J22 in the figure below (red box position).
The relationship between the RS485 ports and corresponding COM ports are shown in the table below.
Location in PCBA J24 J22
Corresponding COM port COM4 COM2
The specific location of the corresponding COM
TIP
You need to open the device case to view the position of 120R jumper resistor. For detailed operations, please refer to 2.1.1 Open Device Case.
1.6.7 1000M Ethernet Interface
ED-HMI2120-070C includes one adaptive 10/100/1000M Ethernet port, and the silkscreen is
” “. The connector is RJ45, which can support PoE with the expansion module. When accessing to network, it is recommended to use the network cable of Cat6 and above. The pins corresponding to the terminal are defined as follows:
Pin ID 1 2 3
Pin Name TX1+ TX1TX2+
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ED-HMI2120-070C
4
TX2-
5
TX3+
6
TX3-
7
TX4+
8
TX4-
1.6.8 100M Ethernet Interface
ED-HMI2120-070C includes includes an adaptive 10/100M Ethernet port, and the silkscreen is
” “. The connector is RJ45, and it is recommended to use the network cable with Cat6 and above when accessing to network. The pins corresponding to the terminal are defined as follows:
Pin ID 1 2 3 4 5 6 7 8
Pin Name TX+ TXRx+ RX-
1.6.9 HDMI Interface
ED-HMI2120-070C includes one HDMI port, the silkscreen is “HDMI”. The connector is type A HDMI, which can connect to an HDMI display and supports up to 4Kp60.
1.6.10 USB 2.0 Interface
ED-HMI2120-070C includes 2 USB2.0 ports, the silkscreen is ” “. The connector is type A USB, which can connect to standard USB 2.0 peripherals and supports up to 480Mbps transmission rate.
1.6.11 Micro USB Interface
ED-HMI2120-070C includes one Micro USB interface, the silkscreen is “PROGRAMMING” and it can be connected to a PC to flash to eMMC of the device.
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ED-HMI2120-070C
1.6.12 Antenna Interface (optional)
The ED-HMI2120-070C includes 2 SMA antenna ports, the silkscreens are “4G” and “Wi-Fi/BT” and they can be connected to the 4G antenna and Wi-Fi/BT antenna.
TIP The number of antenna interface is related to the purchasing product model. Here, we take two antenna interfaces as an example.
1.6.13 Motherboard Interface
Introducing the interfaces reserved in the ED-HMI2120-070C, which can be obtained only after the device case is opened and can be expanded according to actual needs.
NO.
Function
1
12V 1A Power Output
2
10-Pin GPIO Pin Header
3
40-Pin GPIO Pin Header
4
M.2 B
5
RTC Battery Base
6
USB 2.0 Pin Header
7
CSI Interface
8
FPC HDMI Interface
1.6.13.1 12V 1A Output
The motherboard of ED-HMI2120-070C includes 3 expanded 12V 1A power output ports with 2Pin 2.0mm white WTB connector, which is reserved for the extended LCD screen to supply power. The pins are defined as follows:
Pin ID
Pin Name
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ED-HMI2120-070C
1
GND
2
12V
1.6.13.2 10-Pin GPIO
The motherboard of ED-HMI2120-070C includes a 10-Pin GPIO Pin Header with 2×5-Pin 2.54mm pitch, which is used to lead out the extended GPIO port. The user can customize the extension, and the pins definition are as follows:
Pin ID 1 2 3 4 5 6 7 8 9 10
Pin Name EXIO_P10 3V3 EXIO_P12 EXIO_P11 EXIO_P14 EXIO_P13 EXIO_P16 EXIO_P15 GND EXIO_P17
1.6.13.3 40-Pin GPIO
The motherboard of ED-HMI2120-070C includes a 40-Pin GPIO terminal with 2×20-Pin 2.54mm pitch, which is used to lead out the GPIO port of CM4, and reserves to connect the extended accessories. The pins are defined as follows:
Pin ID 1 3 5 7 9 11
Pin Name 3V3_EXT GPIO2 GPIO3 GPIO4 GND GPIO17
Pin ID 2 4 6 8 10 12
Pin Name 5V2_CM4 5V2_CM4 GND GPIO14 GPIO15 GPIO18
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ED-HMI2120-070C
13
GPIO27
14
GND
15
GPIO22
16
GPIO23
17
3V3_EXT
18
GPIO24
19
GPIO10
20
GND
21
GPIO9
22
GPIO25
23
GPIO11
24
GPIO8
25
GND
26
GPIO7
27
GPIO0
28
GPIO1
29
GPIO5
30
GND
31
GPIO6
32
GPIO12
33
GPIO13
34
GND
35
GPIO19
36
GPIO16
37
GPIO26
38
GPIO20
39
GND
40
GPIO21
Note:GPIO4~GPIO9GPIO12GPIO13 and GPIO22~GPIO27 has been used for other specific functions. If you need to use the function of its ordinary IO, you need to remove the jumper resistance on the corresponding signal line.
1.6.13.4 M.2 B Interface
The motherboard of ED-HMI2120-070C includes a M.2 B Key connector, which is used for external SSD. It is compatible with M.2 B 2230 and M.2 B 2242 SSD.
1.6.13.5 RTC Battery Base
The motherboard of ED-HMI2120-070C is integrated with RTC. For the version sold in China, we will install CR1220 battery (RTC backup power supply) by default.
RTC can ensure that the system has an uninterrupted and reliable clock, which is not affected by factors such as the device is power down.
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TIP
Some international logistics do not support the transportation of batteries, and some exfactory devices are not equipped with CR1220 batteries. Therefore, before using RTC, please prepare a CR1220 battery and install it on the motherboard.
1.6.13.6 USB 2.0 Interface
The motherboard of ED-HMI2120-070C includes an extended USB 2.0 Pin Header with 5-Pin 1.5mm pitch WTB connector. It is used to expand a USB 2.0 interface, the pins are defined as follows:
Pin ID 1 2 3 4 5
Pin Name VBUS USB_DM USB_DP GND GND
1.6.13.7 CSI Interface
The motherboard of ED-HMI2120-070C includes one extended CSI interface, 2×15-Pin 0.4mm pitch connector and 2-Lane CSI signal. It is used to expand the connection of 8-megapixels CSI camera, the pins are defined as follows:
Pin ID 1 3 5 7 9 11 13 15 17 19 21
Pin Name NC 1V8_CM4 1V8_CM4 CSI_MCLK GND NC NC GND NC GND CSI_D1_P
Pin ID 2 4 6 8 10 12 14 16 18 20 22
Pin Name NC 1V2_CSI GND GND 2V8_CSI NC NC GND NC CSI_D1_N GND
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ED-HMI2120-070C
23
CSI_D0_N
25
GND
27
CSI_CLK_P
29
SCL_1V8
24
CSI_D0_P
26
CSI_CLK_N
28
GND
30
SDA_1V8
1.6.13.8 FPC HDMI Interface
The motherboard of ED-HMI2120-070C includes one extended HDMI interface with 40-pin 0.5mm pitch FPC connector. It supports video signal output to LCD screen, reserves to connect the extended LCD screen. It supports USB/I2C touch screen and backlight adjustment. The pins are defined as follows:
Pin ID 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39
Pin Name NC NC NC NC HDMI1_CLKN GND HDMI1_TX0N GND HDMI1_TX1N GND HDMI1_TX2N GND HDMI1_CEC HDMI1_SCL GND GND GND SCL_LCD GND USB_DM_LCD
Pin ID 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
Pin Name NC NC NC GND HDMI1_CLKP GND HDMI1_TX0P GND HDMI1_TX1P GND HDMI1_TX2P GND GND HDMI1_SDA HDMI1_HPD TPINT_L SDA_LCD GND USB_DP_LCD GND
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ED-HMI2120-070C
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ED-HMI2120-070C
2 Installing Components (optional)
This chapter describes how to install optional components.
2.1 Installing Internal Components
Introducing the detailed operations of opening/closing the device case and installing the RTC battery. Before installing the internal components, it is necessary to open the device case.
2.1.1 Open Device Case
Preparation: A cross screwdriver has been prepared. Steps: 1. Pull out the default configuration of phoenix connector (male for wiring). 2. Use a screwdriver to loosen two M3 screws on two sides counterclockwise.
3. Remove the side cover to the right.
4. Use a screwdriver to loosen four M3 screws and one grounding screw on two sides counterclockwise..
5. Remove the metal case upward and turn it to the ports side.
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ED-HMI2120-070C
6. Use a screwdriver to loosen the 8 screws fixing the PCBA counterclockwise, and flip it to the back of the PCBA.
2.1.2 Install RTC battery
TIP Some international logistics do not support the transportation of batteries, and some exfactory devices are not equipped with CR1220 batteries. Therefore, before using RTC, please prepare a CR1220 battery and install it on the motherboard.
Preparation: · The device case has been opened. · The CR1220 battery has been prepared.
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Steps: 1. Locate the RTC battery base where the battery is to be installed, as shown in the red box
below.
2. Put the positive pole of the battery upwards and press it into the RTC base. The installation effect is as shown below.
2.1.3 Close Device Case
Preparation: A cross screwdriver has been prepared. Steps: 1. Turn the PCBA over to the front and place it on the back of the LCD screen. Align the 8 screw
holes on the PCBA with the stud holes on the back of the LCD screen. Insert the 8 mounting screws, and then use a screwdriver to tighten clockwise to fix the PCBA on the on the back of the LCD screen.
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2. Flip the metal case upward, align the screw mounting holes on the metal case with the screw mounting holes on the back of the LCD screen, and cover it downward on the back of the LCD screen.
3. Align the screw holes on side panels of metal case, insert 4 M3 screws and one grounding screw, then tighten clockwise with a screwdriver.
4. Align the ports on PCBA with the ports on the side panel, insert the side cover.
5. Insert 2 M3 screws and then use a screwdriver to tighten two M3 screws clockwise.
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ED-HMI2120-070C
6. Plug in the default phoenix connector.
2.2 Installing/Removing External Components
Introducing the detailed operations of installing/removing some optional accessories.
2.2.1 Install Antenna
If the purchasing ED-HMI2120-070C includes 4G and Wi-Fi functions, the antenna need to be installed before using the device. Preparation: The corresponding antennas have been obtained from the packaging box. If there are multiple antennas, they can be distinguished by the labels on the antennas. Steps: 1. Find the location of antenna port, as shown in the red mark of figure below.
2. Align the ports on both sides of the device and the antenna and tighten them clockwise to ensure that they will not fall off.
2.2.2 Install Micro SD Card
If you need to install the SD card while using the product, you can refer to the following instructions. Preparation: SD card is ready. Steps: 1. Find the location of SD card slot, as shown in the red mark of figure below.
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ED-HMI2120-070C
2. Insert the Micro SD card into the corresponding card slot with the contact side facing down, and hear a sound to indicate that the installation is completed.
2.2.3 Pull Out SD Card
If you need to remove the SD card while using the product, you can refer to the following instructions. Steps: 1. Find the location of SD card, as shown in the red mark of figure below.
2. Press the SD card into the card slot with your hand to pop it out, and then pull out the SD card.
2.2.4 Install Nano SIM Card
If the purchasing ED-HMI2120-070C device includes 4G function, the SIM card need to be installed before using 4G. Preparation: The 4G Nano SIM card is ready. Steps: 1. Find the location of Nano SIM card slot, as shown in the red mark of figure below.
2. Insert the Nano SIM card into the corresponding card slot with the chip side up, and hear a sound to indicate that the installation is completed.
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ED-HMI2120-070C
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ED-HMI2120-070C
3 Installing Device
This chapter introduces how to install the device.
3.1 Embedded Installation
ED-HMI2120-070C supports embedded front installation, which is equipped with a mounting kit (including 4 x buckles, 4xM4*10 screws and 4xM4*16 screws) . Preparation:
· A mounting kit (including 4 x buckles, 4xM4*10 screws and 4xM4*16 screws) have been obtained from the packaging box.
· A cross screwdriver has been prepared. Steps: 1. You need ensure the opening size of the cabinet according to the size of ED-HMI2120-070C, as
shown in the figure below. Unit: mm
2. Drill a hole on the cabinet according to the hole size of step1. 3. Insert the ED-HMI2120-070C into the cabinet from the outside.
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ED-HMI2120-070C
4. Align the screw hole (unthreaded hole) of the buckle with the buckle mounting hole on the side of the device.
5. Use 4 M4*10 screws to pass through the buckle and tighten it clockwise to fix the buckle to the device; then use 4 M4*16 screws to pass through the screw hole (threaded hole) of the buckle and tighten clockwise to the end through the buckles.
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ED-HMI2120-070C
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4 Booting the Device
This chapter introduces how to connect cables and boot the device.
4.1 Connecting Cables
This section describes how to connect cables. Preparation:
· Accessories such as display, mouse, keyboard and power adapter that can be used normally have been ready.
· A network that can be used normally. · Get the HDMI cable and network cable that can be used normally. Schematic diagram of connecting cables: Please refer to 1.6 Interfaces for the pin definition of each interface and the specific method of wiring.
4.2 Booting The System For The First Time
ED-HMI2120-070C has no switching power supply. After the power supply is connected, the system will start.
· The red PWR indicator is on, indicating that the device has been powered normally. · The green ACT indicator is blinking, indicating that the system is started normally, and then the
logo of Raspberry Pi will appear in the upper left corner of the screen.
TIP Default username is pi , Default password is raspberry .
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4.2.1 Raspberry Pi OS (Desktop)
If the Desktop version of the system is installed when the product leaves the factory, after the device is started, it will directly enter the desktop, as shown in the following figure.
4.2.2 Raspberry Pi OS (Lite)
If the Lite version of the system is installed at the factory, the default username pi will be used to automatically log in after the device is started, and the default password is raspberry. The following figure shows that the system has been started normally.
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5 Configuring System
This chapter introduces how to configure system.
5.1 Finding Device IP
Finding Device IP
5.2 Remote Login
Remote Login
5.3 Configuring Storage Devices
Configuring Storage Devices
5.4 Configuring Ethernet IP
Configuring Ethernet IP
5.5 Configuring Wi-Fi (Optional)
Configuring Wi-Fi
5.6 Configuring Bluetooth (Optional)
Configuring Bluetooth
5.7 Configuring 4G (Optional)
Configuring 4G
5.8 Configuring Buzzer
Configuring Buzzer
5.9 Configuring RTC
Configuring RTC
ED-HMI2120-070C
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5.10 Configuring Serial Port
This chapter introduces the configuration method of RS232 and RS485.
5.10.1 Installing picocom tool
In the Linux environment, you can use the picocom tool to debug the serial ports RS232 and RS485. Execute the following command to install the picocom tool.
sh sudo apt-get install picocom
5.10.2 Configuring RS232
ED-HMI2120-070C includes 2 RS232 ports, and the corresponding COM ports and device files are as follows:
Number of RS232 Ports 2
Corresponding COM Port COM1, COM3
Corresponding Device File /dev/com1, /dev/com3
Preparation: The RS232 port of ED-HMI2120-070C has been connected with external device. Steps: 1. Execute the following command to open the serial port com1, and configure the serial port baud
rate to 115200.
sh picocom -b 115200 /dev/com1
2. Input commands as needed to control external device.
5.10.3 Configuring RS485
ED-HMI2120-070C includes 2 RS485 ports, and the corresponding COM ports and device files are as follows:
Number of RS485 Ports 2
Corresponding COM Port COM2, COM4
Corresponding Device File /dev/com2, /dev/com4
Preparation:
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The RS485 port of ED-HMI2120-070C has been connected with external devices. Steps: 1. Execute the following command to open the serial port com4, and configure the serial port baud
rate to 115200.
sh picocom -b 115200 /dev/com4
2. Input commands as needed to control external devices.
5.11 Configuring Audio (Optional)
Configuring Audio
5.12 Configuring USER Indicator
Configuring USER Indicator
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6 Installing OS (optional)
The device is shipped with an operating system by default. If the OS is corrupted during use or the user needs to replace the OS, it is necessary to re-download the appropriate system image and install it. Our company supports to install the OS by installing the standard Raspberry Pi OS first, and then install the Firmware package.
The following section describes the specific operations of image download, eMMC flashing and installation of Firmware packages.
6.1 Downloading OS File
You can download the corresponding official Raspberry Pi OS file according to your actual needs, the download path is listed below:
OS
Download Path
Raspberry Pi OS(Desktop) 64-bit-bookworm (Debian 12)
https://downloads.raspberrypi.com/raspios_arm64/images/ raspios_arm64-2024-07-04/2024-07-04-raspios-bookworm-arm64.img.xz (https://downloads.raspberrypi.com/raspios_arm64/images/ raspios_arm64-2024-07-04/2024-07-04-raspios-bookworm-arm64.img.xz)
Raspberry Pi OS(Lite) 64-bit-bookworm (Debian 12)
https://downloads.raspberrypi.com/raspios_lite_arm64/images/ raspios_lite_arm64-2024-07-04/2024-07-04-raspios-bookworm-arm64lite.img.xz (https://downloads.raspberrypi.com/raspios_lite_arm64/images/ raspios_lite_arm64-2024-07-04/2024-07-04-raspios-bookworm-arm64lite.img.xz)
Raspberry Pi OS(Desktop) 32-bit-bookworm (Debian 12)
https://downloads.raspberrypi.com/raspios_armhf/images/ raspios_armhf-2024-07-04/2024-07-04-raspios-bookworm-armhf.img.xz (https://downloads.raspberrypi.com/raspios_armhf/images/ raspios_armhf-2024-07-04/2024-07-04-raspios-bookworm-armhf.img.xz)
Raspberry Pi OS(Lite) 32-bit-bookworm (Debian 12)
https://downloads.raspberrypi.com/raspios_lite_armhf/images/ raspios_lite_armhf-2024-07-04/2024-07-04-raspios-bookworm-armhflite.img.xz (https://downloads.raspberrypi.com/raspios_lite_armhf/images/ raspios_lite_armhf-2024-07-04/2024-07-04-raspios-bookworm-armhflite.img.xz)
6.2 Flashing to eMMC
It is recommended to use the Raspberry Pi official tools. The download paths are as follows: · Raspberry Pi Imager: https://downloads.raspberrypi.org/imager/imager_latest.exe (https:// downloads.raspberrypi.org/imager/imager_latest.exe)
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· SD Card Formatter: https://www.sdcardformatter.com/download/ (https:// www.sdcardformatter.com/download/)
· Rpiboot: https://github.com/raspberrypi/usbboot/raw/master/win32/rpiboot_setup.exe (https:// github.com/raspberrypi/usbboot/raw/master/win32/rpiboot_setup.exe)
Preparation:
· The downloading and installation of the official tools to the computer have been completed. · A Micro USB to USB-A cable has been prepared. · The OS file has been obtained.
Steps:
The steps are described using Windows system as an example.
1. Connect the power cord and USB flashing cable (Micro-USB to USB-A).
· Connecting to USB cable: One end is connected to the Micro USB port on the device side, and the other end is connected to the USB port on the PC.
· Connecting to power cord: One end is connected to the DC 2Pin Phoenix terminal on the device side, and the other end is connected to the external power supply.
2. Disconnect the power supply of ED-HMI2120-070C and then power it on again. 3. Open rpiboot tool to automatically convert the drive to a letter
4. After the completion of the drive letter, the drive letter will pop up in the lower right corner of the computer.
5. Open SD Card Formatter, select the formatted drive letter, and click “Format” at the lower right to format.
6. In the pop-up prompt box, select “Yes”. 7. When the formatting is completed, click “OK” in the prompt box. 8. Close SD Card Formatter. 9. Open Raspberry Pi Imager, select “CHOOSE OS” and select “Use Custom ” in the pop-up
pane.
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10. According to the prompt, select the OS file under the user-defined path and return to the main page.
11. Click “CHOOSE STORAGE”, select the default device in the “Storage” interface, and return to the main page.
12. Click “NEXT”, select “NO ” in the pop-up “Use OS customization?” pane.
13. Select “YES” in the pop-up “Warning” pane to start writing the image.
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14. After the OS writing is completed, the file will be verified.
15. After the verification is completed, click “CONTINUE” in the pop-up “Write Successful” box. 16. Close Raspberry Pi Imager, remove USB cable and power on the device again.
6.3 Installing Firmware Package
After you have finished flashing to eMMC on ED-HMI2120-070C, you need to configure the system by adding edatec apt source and installing firmware package to make the system work. The following is an example of Debian 12 (bookworm) desktop version.
Preparation:
· The flashing to eMMC of the Raspberry Pi standard OS (bookworm) has been completed. · The device has booted normally and the relevant boot configuration has been completed.
Steps:
1. After the device starts normally, execute the following commands in the command pane to add the edatec apt source and installing firmware package.
sh curl -s https://apt.edatec.cn/bsp/ed-install.sh | sudo bash -s hmi2120_070c
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2. After the installation is complete, the system automatically reboots. 3. Execute the following command to check whether the firmware package is installed
successfully.
sh dpkg -l | grep ed-
The result in the picture below indicates that the firmware package has been installed successfully.
TIP If you have installed the wrong firmware package, you can execute sudo apt-get –purge remove package to delete it, where “package” is the package name.
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Documents / Resources
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EDA TEC ED-HMI2120-070C Industrial Automation and Controls [pdf] User Manual ED-HMI2120-070C Industrial Automation and Controls, ED-HMI2120-070C, Industrial Automation and Controls, Automation and Controls |