Comprehensive Product Summary – EX9522 Addressable RS422/485 to RS232 Converter

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### 1. Product Overview

Product Name: EX9522
Model Number: EX9522D
Series: EX952N Series – Addressable RS422/485 to RS232 Converter
Article Number: EX9522
Manufacturer: TOPSCCC (TopSCCC Industrial Automation)

The EX9522 is part of the EX952N series of industrial-grade, addressable serial communication converters designed to bridge RS422/RS485 networks with RS232 devices. It integrates a high-performance Intel 80188 CPU running at 40 MHz, embedded ROM-DOS (Datalight) operating system, and robust communication firmware optimized for industrial automation, data acquisition, and control applications. The EX9522 provides multiple serial communication ports, including dual RS232 and one RS485 interface, enabling flexible connectivity between legacy serial equipment and modern networked control systems.

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### 2. Key Features

- Addressable RS422/485 to RS232 Conversion:
Enables RS232 devices to communicate over RS485/RS422 networks with addressable node configuration, allowing multiple converters on a single bus.

- High-Performance Embedded CPU:
Powered by an Intel 80188 microprocessor operating at 40 MHz, ensuring stable and efficient data handling for multi-port serial communication.

- Integrated Memory Architecture:
- SRAM: 256 KB
- Flash ROM: 512 KB
- EEPROM: 2 KB
- Embedded OS: ROM-DOS (Datalight)
This combination supports firmware storage, configuration retention, and real-time data processing.

- Multiple Communication Ports:
- COM1: RS232 (5-wire)
- COM2: RS485 (2-wire)
- COM3: RS232 (3-wire)
COM4 is used for program download (RS232, 3-wire).

- Wide Operating Temperature Range:
Designed for industrial environments with an operating range of –25°C to +75°C and storage range of –40°C to +80°C.

- Power Flexibility:
Operates on unregulated 10–30 VDC input, suitable for field installations with variable power sources.

- Fanless, Rugged Design:
Passive cooling ensures silent operation and high reliability in harsh conditions.

- Watchdog Timer:
Built-in hardware watchdog provides automatic system recovery in case of software or communication faults.

- Real-Time Clock (RTC) Support:
Enables time-stamped data logging and scheduling functions.

- Firmware Upgradeable:
Supports program download via RS232 using XMODEM protocol through HyperTerminal.

- Communication Speed:
Supports baud rates up to 115.2 Kbps, configurable per port.

- Addressable Node Configuration:
Each converter can be assigned a unique address (00–FF) for multi-drop RS485 networks.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| CPU | Intel 80188, 40 MHz |
| SRAM | 256 KB |
| Flash ROM | 512 KB |
| EEPROM | 2 KB |
| Embedded OS | ROM-DOS (Datalight) |
| Communication Ports | COM1: RS232 (5-wire), COM2: RS485 (2-wire), COM3: RS232 (3-wire) |
| Baud Rate | 300 to 115200 bps |
| Data Bits | 7 or 8 |
| Parity | None, Even, Odd |
| Stop Bits | 1 or 2 (depending on port) |
| Operating Temperature | –25°C to +75°C |
| Storage Temperature | –40°C to +80°C |
| Power Supply | Unregulated 10–30 VDC |
| Watchdog Timer | Hardware-based, automatic reset |
| Cooling | Fanless |
| RTC Support | Yes |
| Firmware Update Interface | RS232 (COM4 or COM1 depending on model) |
| Communication Protocols | RS232, RS485, RS422 |
| Maximum Communication Speed | 115.2 Kbps |
| Compliance | Industrial-grade design, compliant with RS232/RS485 standards |

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### 4. Functionality

The EX9522 functions as an intelligent, addressable converter that allows RS232 devices to communicate over an RS485 or RS422 network. It acts as a bridge between unbalanced (RS232) and balanced (RS485/422) communication systems, extending communication distance and improving noise immunity.

Operational Concept:
- The RS485 port (COM2) serves as the network interface, while RS232 ports (COM1 and COM3) connect to local devices.
- Each converter is assigned a unique address (00–FF) stored in EEPROM.
- Commands are sent via RS485 to configure or communicate with specific RS232 ports.
- Data received from RS232 devices is automatically echoed back to the RS485 network.

Use Cases:
- Industrial automation systems connecting PLCs, sensors, and controllers.
- Data acquisition systems requiring multiple serial inputs.
- Remote monitoring and control of RS232-based instruments.
- Integration of legacy serial devices into modern SCADA or DCS networks.

Compatibility:
- Compatible with standard RS232 and RS485 devices.
- Supports communication with PCs, PLCs, HMIs, and measurement instruments.
- Works with standard terminal software (e.g., HyperTerminal) for configuration and firmware updates.

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### 5. Components & Accessories

Included Components:
- EX9522 converter module
- DB-9 male connectors for RS232 ports
- Terminal block for RS485 connection
- Power input terminal (10–30 VDC)
- Built-in EEPROM for configuration storage

Optional Accessories:
- RS485 network cables
- RS232 serial cables (DB9)
- DIN-rail mounting kit
- External power supply (if required)
- Firmware update cable (RS232)

Connectors:
- COM1 (DB-9 Male):
- Pin 1: DCD
- Pin 2: RXD
- Pin 3: TXD
- Pin 4: DTR
- Pin 5: GND
- Pin 6: DSR
- Pin 7: RTS
- Pin 8: CTS
- Pin 9: RI

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### 6. Installation & Setup

Power Requirements:
- Supply voltage: 10–30 VDC (unregulated)
- Connect power to the designated terminal block.

Mounting Options:
- DIN-rail or panel mounting (depending on enclosure type)
- Ensure adequate ventilation for passive cooling.

Initial Configuration:
- Default “INIT mode” can be activated by grounding the INIT* pin during power-up.
- INIT mode resets communication parameters to:
- Address: 00
- Baud rate: 9600 bps
- Data bits: 8
- Parity: None
- Stop bits: 1
- Checksum: Disabled

Firmware Update Procedure:
1. Connect COM4 (EX9521/22/23) or COM1 (EX9527) to PC via RS232.
2. Ground INIT* pin and power on the module.
3. Use HyperTerminal with settings:
- Baud rate: 57600
- Data bits: 8
- Parity: None
- Stop bits: 1
- Flow control: None
4. Transfer firmware using XMODEM protocol.
5. Disconnect INIT* from ground immediately after completion.

Configuration Commands:
- Address setting: `$AAA(addr)`
- Baud rate: `$AABN(baud rate)`
- Data bits: `$AADN(data-bit)`
- Parity: `$AAPN(parity-bit)`
- Stop bits: `$AAON(stop-bit)`
- ID string: `$AA6(ID)`
- Delimiter: `$AAC(delimiter)`
- End character: `$AATN(CrLfMode)`

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### 7. Performance & Capabilities

Communication Performance:
- Maximum baud rate: 115.2 Kbps
- Supports 7/8 data bits, 1/2 stop bits, and parity modes (None/Even/Odd)
- Configurable per port for flexible integration

Addressable Network Operation:
- Each EX9522 can represent two logical RS232 nodes on the RS485 network (addresses AA and AA+1).
- Supports simultaneous communication with multiple RS232 devices.

Buffer Management:
- Built-in buffer for asynchronous data reception from active RS232 devices.
- Buffer automatically re-enables after inactivity.

Watchdog and Fault Recovery:
- Hardware watchdog ensures automatic reset upon system hang or communication failure.
- Reset status can be read via `$AA5` command.

Limitations:
- Limited to 115.2 Kbps maximum baud rate.
- RS485 communication limited to standard multi-drop topology.
- INIT* pin must be handled carefully during firmware updates to avoid system hang.

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### 8. Standards & Compliance

Electrical Standards:
- RS232 (EIA/TIA-232)
- RS485 (EIA/TIA-485)
- RS422 compatible

Environmental Compliance:
- Operating temperature: –25°C to +75°C
- Storage temperature: –40°C to +80°C
- Industrial-grade design for vibration and noise immunity

Firmware & Protocol Standards:
- Embedded ROM-DOS (Datalight)
- XMODEM protocol for firmware transfer
- ASCII-based command set for configuration

Safety & Reliability:
- Watchdog timer for system recovery
- EEPROM for non-volatile configuration storage
- Fanless design for long-term reliability

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### 9. Additional Information

Warranty & Support:
- Standard manufacturer warranty (typically 1 year, depending on distributor)
- Technical support available through TOPSCCC or authorized resellers
- Firmware updates and documentation downloadable from manufacturer’s website

Maintenance:
- No moving parts; minimal maintenance required
- Periodic verification of communication parameters recommended
- Firmware updates can be applied via RS232 interface

Software & Updates:
- Configuration via terminal software (HyperTerminal or equivalent)
- Firmware upgradeable through RS232 using XMODEM protocol
- Supports command-based configuration for automation integration

Model Variants in EX952N Series:
| Model | COM1 | COM2 | COM3 | COM4 | COM5–8 | Notes |
|--------|-------|-------|-------|-------|---------|-------|
| EX9521D | RS232 | RS485 | — | RS232 (download) | — | Basic 2-port model |
| EX9522D | RS232 | RS485 | RS232 | RS232 (download) | — | Dual RS232 + RS485 |
| EX9523D | RS232 | RS485 | RS232 | RS232 | — | Triple RS232 + RS485 |
| EX9527D | RS232 | RS485 | RS232 | RS232 | RS232×4 | Extended 8-port model |

Typical Applications:
- Industrial control systems
- SCADA communication gateways
- Laboratory instrumentation networks
- Building automation and environmental monitoring
- Serial device networking and remote data acquisition

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### Summary

The EX9522 Addressable RS422/485 to RS232 Converter is a robust, industrial-grade communication interface designed to integrate RS232 devices into RS485 networks. With its Intel 80188 CPU, embedded ROM-DOS OS, and flexible configuration options, it provides reliable, high-speed serial communication in demanding environments. Its addressable architecture, wide temperature tolerance, and watchdog protection make it ideal for automation, control, and data acquisition applications where reliability and configurability are paramount.