LOOKING FOR THE RIGHT
INDUSTRIAL SOLUTION?
Discover embedded, communication and automation solutions tailored to your application.
EMA-8308
Ethernet Bipolar 8*DI In 24bit 2 DA Out 12 bit 2*LAN Module
198,00 EUR
including VAT 235.62 EUR
General Capabilities
- Ethernet‑based remote analog I/O control module with web‑based configuration.
- Supports both unipolar and bipolar analog input ranges.
- Available in multiple variants for different resolution and input configurations:
- EMA‑8308: 24‑bit unipolar, 8 differential / 16 single‑ended inputs, 2×12‑bit outputs.
- EMA‑8308A: 24‑bit unipolar, 8 differential / 16 single‑ended inputs, 2×16‑bit outputs.
- EMA‑8308D: 24‑bit bipolar, 8 differential inputs, 2×12‑bit outputs.
- EMA‑8308DA: 24‑bit bipolar, 8 differential inputs, 2×16‑bit outputs.
Analog Input Section
- 24‑bit resolution with selectable input ranges:
- Unipolar: 0–5 V, 0–10 V, 0–20 mA, 4–20 mA.
- Bipolar: ±5 V, ±10 V, 0–20 mA, 4–20 mA.
- Programmable single‑ended or differential input configuration.
- High common‑mode voltage tolerance up to 10 V (for EMA‑8308D/DA).
- Over‑voltage protection up to 20 V DC.
- Input filter bandwidths: 7.03 kHz, 3.52 kHz, 1.76 kHz, 879 Hz.
- Sampling rate: 10 samples/s.
- Offset error: 2.5 µV typical, 5 µV max; drift 20 nV/°C.
- Common‑mode rejection ratio (CMRR): 120 dB.
Analog Output Section
- Two analog output channels.
- Output range: ±10 V DC.
- Resolution: 12‑bit (EMA‑8308/D) or 16‑bit (EMA‑8308A/DA).
- Overload protection: 50 mA (peak).
- Over‑voltage protection: 20 V DC max.
Ethernet Section
- Dual 10/100 Mbps auto‑negotiating Ethernet ports (RJ‑45).
- Direct web‑page control and configuration.
- IP reassignment and software‑based configuration.
- Software key and password protection for security.
- Supports UDP communication protocol for remote I/O control.
Mechanical and Electrical
- Compact metal housing for industrial durability.
- DIN‑rail mountable.
- Power supply: 12–24 V DC input.
- Operating temperature: 0 – 70 °C; storage: −20 – 80 °C.
- Humidity: 5 – 95 % RH (non‑condensing).
- Ethernet‑based remote analog I/O control module with web‑based configuration.
- Supports both unipolar and bipolar analog input ranges.
- Available in multiple variants for different resolution and input configurations:
- EMA‑8308: 24‑bit unipolar, 8 differential / 16 single‑ended inputs, 2×12‑bit outputs.
- EMA‑8308A: 24‑bit unipolar, 8 differential / 16 single‑ended inputs, 2×16‑bit outputs.
- EMA‑8308D: 24‑bit bipolar, 8 differential inputs, 2×12‑bit outputs.
- EMA‑8308DA: 24‑bit bipolar, 8 differential inputs, 2×16‑bit outputs.
Analog Input Section
- 24‑bit resolution with selectable input ranges:
- Unipolar: 0–5 V, 0–10 V, 0–20 mA, 4–20 mA.
- Bipolar: ±5 V, ±10 V, 0–20 mA, 4–20 mA.
- Programmable single‑ended or differential input configuration.
- High common‑mode voltage tolerance up to 10 V (for EMA‑8308D/DA).
- Over‑voltage protection up to 20 V DC.
- Input filter bandwidths: 7.03 kHz, 3.52 kHz, 1.76 kHz, 879 Hz.
- Sampling rate: 10 samples/s.
- Offset error: 2.5 µV typical, 5 µV max; drift 20 nV/°C.
- Common‑mode rejection ratio (CMRR): 120 dB.
Analog Output Section
- Two analog output channels.
- Output range: ±10 V DC.
- Resolution: 12‑bit (EMA‑8308/D) or 16‑bit (EMA‑8308A/DA).
- Overload protection: 50 mA (peak).
- Over‑voltage protection: 20 V DC max.
Ethernet Section
- Dual 10/100 Mbps auto‑negotiating Ethernet ports (RJ‑45).
- Direct web‑page control and configuration.
- IP reassignment and software‑based configuration.
- Software key and password protection for security.
- Supports UDP communication protocol for remote I/O control.
Mechanical and Electrical
- Compact metal housing for industrial durability.
- DIN‑rail mountable.
- Power supply: 12–24 V DC input.
- Operating temperature: 0 – 70 °C; storage: −20 – 80 °C.
- Humidity: 5 – 95 % RH (non‑condensing).
Comprehensive Product Summary – EMA‑8308 Ethernet Analog I/O Module Series
### 1. Product Overview
Product Name: Ethernet Bipolar 8×DI In 24‑bit 2×DA Out 12‑bit 2×LAN Module
Model Numbers: EMA‑8308 / EMA‑8308A / EMA‑8308D / EMA‑8308DA
Series: EMA‑8308 Ethernet Analog I/O Module Series
Article Number: EMA‑8308
Manufacturer: JS Automation Corp. (健昇科技股份有限公司)
Manufacturer Address: 6F., No.100, Zhongxing Rd., Xizhi Dist., New Taipei City, Taiwan
Contact:
TEL: +886‑2‑2647‑6936 FAX: +886‑2‑2647‑6940
Website: [www.automation.com.tw](http://www.automation.com.tw) / [www.automation-js.com](http://www.automation-js.com)
Email: [control.cards@automation.com.tw](mailto:control.cards@automation.com.tw)
The EMA‑8308 series is a family of Ethernet‑based analog input/output modules designed for remote data acquisition and control in industrial automation environments. The modules provide high‑resolution analog input (24‑bit) and analog output (12‑ or 16‑bit) channels, dual Ethernet ports for network redundancy or daisy‑chain topology, and robust electrical protection for reliable field operation.
### 2. Key Features
General Capabilities
- Ethernet‑based remote analog I/O control module with web‑based configuration.
- Supports both unipolar and bipolar analog input ranges.
- Available in multiple variants for different resolution and input configurations:
- EMA‑8308: 24‑bit unipolar, 8 differential / 16 single‑ended inputs, 2×12‑bit outputs.
- EMA‑8308A: 24‑bit unipolar, 8 differential / 16 single‑ended inputs, 2×16‑bit outputs.
- EMA‑8308D: 24‑bit bipolar, 8 differential inputs, 2×12‑bit outputs.
- EMA‑8308DA: 24‑bit bipolar, 8 differential inputs, 2×16‑bit outputs.
Analog Input Section
- 24‑bit resolution with selectable input ranges:
- Unipolar: 0–5 V, 0–10 V, 0–20 mA, 4–20 mA.
- Bipolar: ±5 V, ±10 V, 0–20 mA, 4–20 mA.
- Programmable single‑ended or differential input configuration.
- High common‑mode voltage tolerance up to 10 V (for EMA‑8308D/DA).
- Over‑voltage protection up to 20 V DC.
- Input filter bandwidths: 7.03 kHz, 3.52 kHz, 1.76 kHz, 879 Hz.
- Sampling rate: 10 samples/s.
- Offset error: 2.5 µV typical, 5 µV max; drift 20 nV/°C.
- Common‑mode rejection ratio (CMRR): 120 dB.
Analog Output Section
- Two analog output channels.
- Output range: ±10 V DC.
- Resolution: 12‑bit (EMA‑8308/D) or 16‑bit (EMA‑8308A/DA).
- Overload protection: 50 mA (peak).
- Over‑voltage protection: 20 V DC max.
Ethernet Section
- Dual 10/100 Mbps auto‑negotiating Ethernet ports (RJ‑45).
- Direct web‑page control and configuration.
- IP reassignment and software‑based configuration.
- Software key and password protection for security.
- Supports UDP communication protocol for remote I/O control.
Mechanical and Electrical
- Compact metal housing for industrial durability.
- DIN‑rail mountable.
- Power supply: 12–24 V DC input.
- Operating temperature: 0 – 70 °C; storage: −20 – 80 °C.
- Humidity: 5 – 95 % RH (non‑condensing).
### 3. Technical Specifications
| Parameter | Specification |
|----------------|------------------|
| Analog Inputs | 8 differential / 16 single‑ended (model‑dependent) |
| Resolution (A/D) | 24 bits |
| Input Ranges (Unipolar) | 0–5 V, 0–10 V, 0–20 mA, 4–20 mA |
| Input Ranges (Bipolar) | ±5 V, ±10 V, 0–20 mA, 4–20 mA |
| Input Type | Differential or single‑ended (programmable) |
| Input Filter Bandwidths | 7.03 kHz / 3.52 kHz / 1.76 kHz / 879 Hz |
| Sample Rate | 10 samples per second |
| Offset Error | 2.5 µV typical, 5 µV max |
| Offset Drift | 20 nV/°C |
| CMRR | 120 dB |
| Over‑voltage Protection | 20 V DC max |
| Analog Outputs | 2 channels |
| Resolution (D/A) | 12 bit (EMA‑8308/D) / 16 bit (EMA‑8308A/DA) |
| Output Range | ±10 V DC |
| Overload Protection | 50 mA (peak) |
| Ethernet Ports | 2 × RJ‑45 (10/100 M auto‑switch) |
| Power Supply | 12 – 24 V DC |
| Operating Temperature | 0 – 70 °C |
| Storage Temperature | −20 – 80 °C |
| Humidity | 5 – 95 % RH (non‑condensing) |
| Dimensions | 107.6 (D) × 135.8 (W) × 34 (H) mm (4.3 × 5.4 × 1.4 in) |
| Mounting | DIN‑rail |
| Enclosure | Metal case |
### 4. Functionality
The EMA‑8308 series operates as a remote analog I/O interface over Ethernet. It acquires analog voltage or current signals from sensors or transducers and transmits the digitized data to a host controller or SCADA system via UDP protocol. Conversely, it can generate analog output voltages for control applications.
Operation Principle
- Each module is assigned a unique IP address (default 192.168.0.100) and communication port (default 6936).
- The host PC communicates with the module using the provided DLL library or via direct socket commands.
- The module supports both single‑ended and differential analog input configurations, selectable through software.
- Analog outputs are controlled digitally through the same Ethernet interface.
Use Cases and Applications
- Remote analog voltage or current sensing.
- Industrial process monitoring and control.
- Sensor signal acquisition and conditioning.
- Remote voltage or current output for actuator control.
- Integration with PLCs, SCADA, or PC‑based control systems.
- Suitable for distributed control networks and data acquisition systems.
Compatibility
- Compatible with Windows 2000/XP/Vista and Linux environments.
- Supported programming languages: Microsoft Visual C/C++, Borland C/C++, Visual Basic.
- Provides DLL libraries (EMA8308.dll) and API functions for integration into custom applications.
### 5. Components & Accessories
Included Components
- EMA‑8308 module (metal enclosure, DIN‑rail mount).
- Dual RJ‑45 Ethernet ports (J2, J4).
- Analog input connectors (JM1, JM2).
- Analog output connector (JM3).
- External power connector (JM4).
- System reset switch (SW2).
- System active LED (LED1).
- Factory preset voltage trimmers (DA0, DA1).
Optional Accessories
- JD52000: 110/220 V AC → 24 V DC @ 1.5 A power supply.
- JS52026: 110/220 V AC → 24 V DC @ 0.75 A power adapter.
Connectors and Pinouts
- JM1 / JM2 (Analog Inputs): 10‑pin connectors, channels AI00–AI07 and AI10–AI17 with ground pins.
- JM3 (Analog Outputs): DA0, DA1, GND.
- JM4: External 24 V DC power input.
### 6. Installation & Setup
Requirements
- 12–24 V DC regulated power supply.
- Ethernet network with available 10/100 Mbps ports.
- Host PC with Windows or Linux OS and installed EMA‑8308 driver and DLL.
Mounting
- DIN‑rail installation for industrial control cabinets.
- Ensure adequate ventilation and ambient temperature within 0–70 °C.
Configuration
1. Connect power and Ethernet cables.
2. Assign IP address and communication port using the provided software or web interface.
3. Configure input mode (single‑ended/differential) and range via software commands.
4. Verify communication using the demo program or API test functions.
5. Integrate into control software using the EMA8308.dll library.
Software Installation
- Execute EMA8308_Install.exe to install drivers, API, and demo programs.
- Default installation path: `..\JS Automation\EMA8308\`.
- Includes directories for API headers, drivers, and example source code.
- DLL file is automatically placed in the system directory.
Network Configuration
- Default IP: 192.168.0.100; default port: 6936.
- IP and port can be changed using `EMA8308_IP_change()` and `EMA8308_socket_port_change()` functions.
- After configuration changes, allow ~10 s for reboot and validation.
### 7. Performance & Capabilities
Analog Input Performance
- 24‑bit resolution ensures high‑precision measurement.
- Sampling rate of 10 samples/s suitable for slow to medium‑speed process monitoring.
- Programmable input filters allow noise reduction and bandwidth control.
- High CMRR (120 dB) ensures accurate differential measurements even in noisy environments.
Analog Output Performance
- ±10 V DC output range supports standard industrial control signals.
- 12‑bit or 16‑bit resolution depending on model.
- Overload protection up to 50 mA (peak) prevents damage from short circuits or excessive load.
Network Performance
- Dual Ethernet ports enable flexible network topologies (daisy‑chain or redundant link).
- Auto‑negotiation between 10 Mbps and 100 Mbps.
- UDP‑based communication ensures low‑latency data transfer.
Software and Control
- Comprehensive DLL API for configuration, data acquisition, and output control.
- Functions include initialization, analog input/output read/write, IP configuration, and security management.
- Supports multiple devices with unique CardIDs for distributed systems.
Limitations
- Sampling rate limited to 10 samples/s per channel (not suitable for high‑speed dynamic signals).
- Analog output current limited to 50 mA peak.
- Requires stable DC power and network environment for optimal performance.
### 8. Standards & Compliance
Electrical and Environmental Compliance
- Designed for industrial environments with wide operating temperature and humidity range.
- Over‑voltage and overload protection on all analog channels.
- Metal enclosure provides EMI shielding and mechanical robustness.
Software and Communication Standards
- Complies with standard Ethernet (IEEE 802.3) 10/100 Base‑T.
- UDP/IP communication protocol for remote control.
- Compatible with Windows DLL standards for API integration.
Quality and Manufacturing
- Manufactured by JS Automation Corp., Taiwan, under ISO‑compliant quality control.
- Factory‑tested for calibration and functional verification.
### 9. Additional Information
Warranty and Support
- Standard manufacturer warranty (contact JS Automation for terms).
- Technical support available via email and website.
- Firmware updates and software tools downloadable from manufacturer’s site.
Maintenance
- Periodic inspection of wiring and connectors recommended.
- Keep module free from dust and moisture.
- Avoid exceeding specified voltage and current limits.
Software Updates
- Firmware version 1.0 and EMA8308.dll v1.0 included.
- Updates and documentation available through user registration on the JS Automation website.
Security Features
- Password‑protected configuration and output control.
- Default password: “12345678”.
- Functions for unlocking, changing, and resetting passwords:
- `EMA8308_security_unlock()`
- `EMA8308_password_change()`
- `EMA8308_password_set_default()`
- Security status can be read via `EMA8308_security_status_read()`.
Error Handling
- Comprehensive error code system for diagnostics (e.g., socket errors, IP errors, timeout, read/write failures).
- Each function returns a 32‑bit status code indicating success or failure.
Software Function Summary
- Initialization and closure: `EMA8308_initial()`, `EMA8308_close()`.
- Firmware version read: `EMA8308_firmware_version_read()`.
- Analog input configuration and read functions: `EMA8308_AD_filter_set()`, `EMA8308_AD_range_set()`, `EMA8308_AD_channel_value_read()`, etc.
- Analog output control: `EMA8308_DA_set()`, `EMA8308_DA_read()`.
- Network configuration: `EMA8308_IP_change()`, `EMA8308_socket_port_change()`, `EMA8308_reboot()`.
- Security management: `EMA8308_security_unlock()`, `EMA8308_password_change()`, `EMA8308_password_set_default()`.
Ordering Information
| Model | Description |
|------------|----------------|
| EMA‑8308 | 24‑bit unipolar, 8 differential / 16 single‑ended analog inputs, 2×12‑bit analog outputs |
| EMA‑8308A | 24‑bit unipolar, 8 differential / 16 single‑ended analog inputs, 2×16‑bit analog outputs |
| EMA‑8308D | 24‑bit bipolar, 8 differential analog inputs, 2×12‑bit analog outputs |
| EMA‑8308DA | 24‑bit bipolar, 8 differential analog inputs, 2×16‑bit analog outputs |
| JD52000 | 110/220 V AC → 24 V DC @ 1.5 A power supply |
| JS52026 | 110/220 V AC → 24 V DC @ 0.75 A power adapter |
### Summary
The JS Automation EMA‑8308 series represents a versatile and precise Ethernet‑based analog I/O solution for industrial automation, process monitoring, and remote control applications. With 24‑bit analog input resolution, selectable voltage/current ranges, and dual Ethernet connectivity, it provides high‑accuracy data acquisition and flexible network integration. The inclusion of comprehensive software libraries and security features makes it suitable for both OEM integration and standalone deployment in distributed control systems. Its robust metal housing, DIN‑rail mounting, and wide environmental tolerance ensure reliable operation in demanding industrial environments.
### 1. Product Overview
Product Name: Ethernet Bipolar 8×DI In 24‑bit 2×DA Out 12‑bit 2×LAN Module
Model Numbers: EMA‑8308 / EMA‑8308A / EMA‑8308D / EMA‑8308DA
Series: EMA‑8308 Ethernet Analog I/O Module Series
Article Number: EMA‑8308
Manufacturer: JS Automation Corp. (健昇科技股份有限公司)
Manufacturer Address: 6F., No.100, Zhongxing Rd., Xizhi Dist., New Taipei City, Taiwan
Contact:
TEL: +886‑2‑2647‑6936 FAX: +886‑2‑2647‑6940
Website: [www.automation.com.tw](http://www.automation.com.tw) / [www.automation-js.com](http://www.automation-js.com)
Email: [control.cards@automation.com.tw](mailto:control.cards@automation.com.tw)
The EMA‑8308 series is a family of Ethernet‑based analog input/output modules designed for remote data acquisition and control in industrial automation environments. The modules provide high‑resolution analog input (24‑bit) and analog output (12‑ or 16‑bit) channels, dual Ethernet ports for network redundancy or daisy‑chain topology, and robust electrical protection for reliable field operation.
### 2. Key Features
General Capabilities
- Ethernet‑based remote analog I/O control module with web‑based configuration.
- Supports both unipolar and bipolar analog input ranges.
- Available in multiple variants for different resolution and input configurations:
- EMA‑8308: 24‑bit unipolar, 8 differential / 16 single‑ended inputs, 2×12‑bit outputs.
- EMA‑8308A: 24‑bit unipolar, 8 differential / 16 single‑ended inputs, 2×16‑bit outputs.
- EMA‑8308D: 24‑bit bipolar, 8 differential inputs, 2×12‑bit outputs.
- EMA‑8308DA: 24‑bit bipolar, 8 differential inputs, 2×16‑bit outputs.
Analog Input Section
- 24‑bit resolution with selectable input ranges:
- Unipolar: 0–5 V, 0–10 V, 0–20 mA, 4–20 mA.
- Bipolar: ±5 V, ±10 V, 0–20 mA, 4–20 mA.
- Programmable single‑ended or differential input configuration.
- High common‑mode voltage tolerance up to 10 V (for EMA‑8308D/DA).
- Over‑voltage protection up to 20 V DC.
- Input filter bandwidths: 7.03 kHz, 3.52 kHz, 1.76 kHz, 879 Hz.
- Sampling rate: 10 samples/s.
- Offset error: 2.5 µV typical, 5 µV max; drift 20 nV/°C.
- Common‑mode rejection ratio (CMRR): 120 dB.
Analog Output Section
- Two analog output channels.
- Output range: ±10 V DC.
- Resolution: 12‑bit (EMA‑8308/D) or 16‑bit (EMA‑8308A/DA).
- Overload protection: 50 mA (peak).
- Over‑voltage protection: 20 V DC max.
Ethernet Section
- Dual 10/100 Mbps auto‑negotiating Ethernet ports (RJ‑45).
- Direct web‑page control and configuration.
- IP reassignment and software‑based configuration.
- Software key and password protection for security.
- Supports UDP communication protocol for remote I/O control.
Mechanical and Electrical
- Compact metal housing for industrial durability.
- DIN‑rail mountable.
- Power supply: 12–24 V DC input.
- Operating temperature: 0 – 70 °C; storage: −20 – 80 °C.
- Humidity: 5 – 95 % RH (non‑condensing).
### 3. Technical Specifications
| Parameter | Specification |
|----------------|------------------|
| Analog Inputs | 8 differential / 16 single‑ended (model‑dependent) |
| Resolution (A/D) | 24 bits |
| Input Ranges (Unipolar) | 0–5 V, 0–10 V, 0–20 mA, 4–20 mA |
| Input Ranges (Bipolar) | ±5 V, ±10 V, 0–20 mA, 4–20 mA |
| Input Type | Differential or single‑ended (programmable) |
| Input Filter Bandwidths | 7.03 kHz / 3.52 kHz / 1.76 kHz / 879 Hz |
| Sample Rate | 10 samples per second |
| Offset Error | 2.5 µV typical, 5 µV max |
| Offset Drift | 20 nV/°C |
| CMRR | 120 dB |
| Over‑voltage Protection | 20 V DC max |
| Analog Outputs | 2 channels |
| Resolution (D/A) | 12 bit (EMA‑8308/D) / 16 bit (EMA‑8308A/DA) |
| Output Range | ±10 V DC |
| Overload Protection | 50 mA (peak) |
| Ethernet Ports | 2 × RJ‑45 (10/100 M auto‑switch) |
| Power Supply | 12 – 24 V DC |
| Operating Temperature | 0 – 70 °C |
| Storage Temperature | −20 – 80 °C |
| Humidity | 5 – 95 % RH (non‑condensing) |
| Dimensions | 107.6 (D) × 135.8 (W) × 34 (H) mm (4.3 × 5.4 × 1.4 in) |
| Mounting | DIN‑rail |
| Enclosure | Metal case |
### 4. Functionality
The EMA‑8308 series operates as a remote analog I/O interface over Ethernet. It acquires analog voltage or current signals from sensors or transducers and transmits the digitized data to a host controller or SCADA system via UDP protocol. Conversely, it can generate analog output voltages for control applications.
Operation Principle
- Each module is assigned a unique IP address (default 192.168.0.100) and communication port (default 6936).
- The host PC communicates with the module using the provided DLL library or via direct socket commands.
- The module supports both single‑ended and differential analog input configurations, selectable through software.
- Analog outputs are controlled digitally through the same Ethernet interface.
Use Cases and Applications
- Remote analog voltage or current sensing.
- Industrial process monitoring and control.
- Sensor signal acquisition and conditioning.
- Remote voltage or current output for actuator control.
- Integration with PLCs, SCADA, or PC‑based control systems.
- Suitable for distributed control networks and data acquisition systems.
Compatibility
- Compatible with Windows 2000/XP/Vista and Linux environments.
- Supported programming languages: Microsoft Visual C/C++, Borland C/C++, Visual Basic.
- Provides DLL libraries (EMA8308.dll) and API functions for integration into custom applications.
### 5. Components & Accessories
Included Components
- EMA‑8308 module (metal enclosure, DIN‑rail mount).
- Dual RJ‑45 Ethernet ports (J2, J4).
- Analog input connectors (JM1, JM2).
- Analog output connector (JM3).
- External power connector (JM4).
- System reset switch (SW2).
- System active LED (LED1).
- Factory preset voltage trimmers (DA0, DA1).
Optional Accessories
- JD52000: 110/220 V AC → 24 V DC @ 1.5 A power supply.
- JS52026: 110/220 V AC → 24 V DC @ 0.75 A power adapter.
Connectors and Pinouts
- JM1 / JM2 (Analog Inputs): 10‑pin connectors, channels AI00–AI07 and AI10–AI17 with ground pins.
- JM3 (Analog Outputs): DA0, DA1, GND.
- JM4: External 24 V DC power input.
### 6. Installation & Setup
Requirements
- 12–24 V DC regulated power supply.
- Ethernet network with available 10/100 Mbps ports.
- Host PC with Windows or Linux OS and installed EMA‑8308 driver and DLL.
Mounting
- DIN‑rail installation for industrial control cabinets.
- Ensure adequate ventilation and ambient temperature within 0–70 °C.
Configuration
1. Connect power and Ethernet cables.
2. Assign IP address and communication port using the provided software or web interface.
3. Configure input mode (single‑ended/differential) and range via software commands.
4. Verify communication using the demo program or API test functions.
5. Integrate into control software using the EMA8308.dll library.
Software Installation
- Execute EMA8308_Install.exe to install drivers, API, and demo programs.
- Default installation path: `..\JS Automation\EMA8308\`.
- Includes directories for API headers, drivers, and example source code.
- DLL file is automatically placed in the system directory.
Network Configuration
- Default IP: 192.168.0.100; default port: 6936.
- IP and port can be changed using `EMA8308_IP_change()` and `EMA8308_socket_port_change()` functions.
- After configuration changes, allow ~10 s for reboot and validation.
### 7. Performance & Capabilities
Analog Input Performance
- 24‑bit resolution ensures high‑precision measurement.
- Sampling rate of 10 samples/s suitable for slow to medium‑speed process monitoring.
- Programmable input filters allow noise reduction and bandwidth control.
- High CMRR (120 dB) ensures accurate differential measurements even in noisy environments.
Analog Output Performance
- ±10 V DC output range supports standard industrial control signals.
- 12‑bit or 16‑bit resolution depending on model.
- Overload protection up to 50 mA (peak) prevents damage from short circuits or excessive load.
Network Performance
- Dual Ethernet ports enable flexible network topologies (daisy‑chain or redundant link).
- Auto‑negotiation between 10 Mbps and 100 Mbps.
- UDP‑based communication ensures low‑latency data transfer.
Software and Control
- Comprehensive DLL API for configuration, data acquisition, and output control.
- Functions include initialization, analog input/output read/write, IP configuration, and security management.
- Supports multiple devices with unique CardIDs for distributed systems.
Limitations
- Sampling rate limited to 10 samples/s per channel (not suitable for high‑speed dynamic signals).
- Analog output current limited to 50 mA peak.
- Requires stable DC power and network environment for optimal performance.
### 8. Standards & Compliance
Electrical and Environmental Compliance
- Designed for industrial environments with wide operating temperature and humidity range.
- Over‑voltage and overload protection on all analog channels.
- Metal enclosure provides EMI shielding and mechanical robustness.
Software and Communication Standards
- Complies with standard Ethernet (IEEE 802.3) 10/100 Base‑T.
- UDP/IP communication protocol for remote control.
- Compatible with Windows DLL standards for API integration.
Quality and Manufacturing
- Manufactured by JS Automation Corp., Taiwan, under ISO‑compliant quality control.
- Factory‑tested for calibration and functional verification.
### 9. Additional Information
Warranty and Support
- Standard manufacturer warranty (contact JS Automation for terms).
- Technical support available via email and website.
- Firmware updates and software tools downloadable from manufacturer’s site.
Maintenance
- Periodic inspection of wiring and connectors recommended.
- Keep module free from dust and moisture.
- Avoid exceeding specified voltage and current limits.
Software Updates
- Firmware version 1.0 and EMA8308.dll v1.0 included.
- Updates and documentation available through user registration on the JS Automation website.
Security Features
- Password‑protected configuration and output control.
- Default password: “12345678”.
- Functions for unlocking, changing, and resetting passwords:
- `EMA8308_security_unlock()`
- `EMA8308_password_change()`
- `EMA8308_password_set_default()`
- Security status can be read via `EMA8308_security_status_read()`.
Error Handling
- Comprehensive error code system for diagnostics (e.g., socket errors, IP errors, timeout, read/write failures).
- Each function returns a 32‑bit status code indicating success or failure.
Software Function Summary
- Initialization and closure: `EMA8308_initial()`, `EMA8308_close()`.
- Firmware version read: `EMA8308_firmware_version_read()`.
- Analog input configuration and read functions: `EMA8308_AD_filter_set()`, `EMA8308_AD_range_set()`, `EMA8308_AD_channel_value_read()`, etc.
- Analog output control: `EMA8308_DA_set()`, `EMA8308_DA_read()`.
- Network configuration: `EMA8308_IP_change()`, `EMA8308_socket_port_change()`, `EMA8308_reboot()`.
- Security management: `EMA8308_security_unlock()`, `EMA8308_password_change()`, `EMA8308_password_set_default()`.
Ordering Information
| Model | Description |
|------------|----------------|
| EMA‑8308 | 24‑bit unipolar, 8 differential / 16 single‑ended analog inputs, 2×12‑bit analog outputs |
| EMA‑8308A | 24‑bit unipolar, 8 differential / 16 single‑ended analog inputs, 2×16‑bit analog outputs |
| EMA‑8308D | 24‑bit bipolar, 8 differential analog inputs, 2×12‑bit analog outputs |
| EMA‑8308DA | 24‑bit bipolar, 8 differential analog inputs, 2×16‑bit analog outputs |
| JD52000 | 110/220 V AC → 24 V DC @ 1.5 A power supply |
| JS52026 | 110/220 V AC → 24 V DC @ 0.75 A power adapter |
### Summary
The JS Automation EMA‑8308 series represents a versatile and precise Ethernet‑based analog I/O solution for industrial automation, process monitoring, and remote control applications. With 24‑bit analog input resolution, selectable voltage/current ranges, and dual Ethernet connectivity, it provides high‑accuracy data acquisition and flexible network integration. The inclusion of comprehensive software libraries and security features makes it suitable for both OEM integration and standalone deployment in distributed control systems. Its robust metal housing, DIN‑rail mounting, and wide environmental tolerance ensure reliable operation in demanding industrial environments.
-
ema8308.pdf
PDF Catalog
-
ema8308e.pdf
Manual
-
sw8308.pdf
Manual
No accessories available.
