Comprehensive Product Summary – EX9523 Addressable RS422/485 to RS232 Converter

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### 1. Product Overview

Product Name: EX9523
Model Number: EX9523D
Series: EX952N Series – Addressable RS422/485 to RS232 Converter
Article Number: EX9523
Manufacturer: Topsccc (Industrial Communication Solutions)

The EX9523 is part of the EX952N family of industrial communication converters designed to bridge RS422/RS485 networks with RS232-based devices. It integrates a high-performance Intel 80188 CPU running at 40 MHz, embedded ROM-DOS (Datalight) operating system, and multiple serial communication ports. The EX9523 model specifically provides three RS232 ports and one RS485 port, enabling flexible multi-port serial communication in industrial automation, measurement, and control systems.

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### 2. Key Features

- Addressable RS422/485 to RS232 Converter: Enables multiple RS232 devices to communicate over a single RS485 network using unique module addressing.
- High-Performance Embedded CPU: Intel 80188 processor operating at 40 MHz ensures reliable and deterministic communication handling.
- Multiple Serial Interfaces:
- COM1: RS232 (5-wire)
- COM2: RS485 (2-wire)
- COM3: RS232 (3-wire)
- COM4: RS232 (3-wire, also used for program download)
- Memory Architecture:
- SRAM: 256 KB
- Flash ROM: 512 KB
- EEPROM: 2 KB
- Embedded OS: ROM-DOS (Datalight)
- Communication Speed: Supports up to 115.2 Kbps.
- Wide Operating Temperature Range: -25°C to +75°C for industrial environments.
- Power Supply: Accepts unregulated 10–30 VDC input.
- Watchdog Timer: Provides automatic fault recovery and system stability.
- Fanless Design: Ensures silent operation and high reliability in harsh conditions.
- Real-Time Clock (RTC) Support: For time-stamped data logging and scheduling.
- Firmware Upgradable: Supports program download via RS232 (COM4) using XMODEM protocol.
- Addressable Command Set: Allows configuration and control via ASCII-based commands.
- Built-in EEPROM Configuration Storage: Retains address, baud rate, and communication parameters after power cycles.
- INIT Mode: Provides a recovery configuration mode (Address=00, 9600 bps, 8N1) for troubleshooting.

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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), COM4: RS232 (3-wire, program download) |
| Max Baud Rate | 115,200 bps |
| Operating Temperature | -25°C to +75°C |
| Storage Temperature | -40°C to +80°C |
| Power Supply | Unregulated 10–30 VDC |
| Watchdog Timer | Hardware watchdog for system recovery |
| RTC Support | Yes |
| Cooling | Fanless |
| Series Models | EX9521D, EX9522D, EX9523D, EX9527D |
| Communication Protocols | RS232, RS485, Addressable ASCII command set |
| Firmware Update Interface | RS232 (COM4) via XMODEM |
| Default Baud Rate (INIT Mode) | 9600 bps, 8 data bits, no parity, 1 stop bit |

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### 4. Functionality

The EX9523 serves as an intelligent communication bridge between RS485 and RS232 devices. It allows multiple RS232 devices to be addressed and controlled over a single RS485 bus. Each module can be assigned a unique address (00–FF) and configured for baud rate, parity, data bits, and stop bits.

Operation Principle:
- Commands are sent via RS485 (COM2) to the module’s address.
- The module interprets the command and routes data to the corresponding RS232 port (COM1, COM3, or COM4).
- Responses from RS232 devices are echoed back to the RS485 network.

Use Cases:
- Industrial automation systems connecting PLCs, sensors, and controllers.
- Measurement and data acquisition systems.
- Remote serial device management over RS485 networks.
- Multi-port serial communication hubs in distributed control systems.

Compatibility:
- Compatible with standard RS232 and RS485 devices.
- Works with PC-based serial communication software (e.g., HyperTerminal).
- Supports standard baud rates from 300 to 115200 bps.

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### 5. Components & Accessories

Included Components:
- EX9523 converter module.
- DB-9 male connectors for RS232 ports.
- Terminal block connectors for RS485 and power input.
- Built-in EEPROM for configuration storage.

Optional Accessories:
- RS485 network cables.
- RS232 serial cables (DB-9 male/female).
- Power supply (10–30 VDC regulated adapter).
- Mounting brackets or DIN-rail adapters (depending on installation environment).

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
- COM2: RS485 (2-wire differential)
- COM3/COM4: RS232 (3-wire: TXD, RXD, GND)

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### 6. Installation & Setup

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

Mounting Options:
- Panel or DIN-rail mounting (depending on model configuration).

Initial Setup:
1. Connect power and communication cables.
2. To enter INIT mode, power on the module and momentarily connect the INIT* pin to GND.
3. Default INIT configuration: Address=00, Baudrate=9600 bps, 8N1, no checksum.
4. Use RS232 COM4 for firmware updates or debugging.

Firmware Update Procedure:
- Connect COM4 (RS232) to PC.
- Use HyperTerminal with settings: 57600 bps, 8 data bits, no parity, 1 stop bit, no flow control.
- Select “Transfer → Receive File” and choose XMODEM protocol.
- Upload the disk image to the module’s flash ROM.
- Disconnect INIT* from ground before completion to prevent system hang.

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)` / `$AA7` (read)
- Delimiter: `$AAC(delimiter)` / `$AAD` (read)
- Checksum enable/disable: `$AAKN`
- End character: `$AATN`
- RTS/CTS control: `$AAXV`, `$AAW`
- Firmware version: `$AAF`
- Module name: `$AAM`
- RS485 configuration: `$AA2`
- Buffer read: `$AAU`

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### 7. Performance & Capabilities

Speed and Throughput:
- Maximum communication speed: 115.2 Kbps.
- Supports multiple simultaneous RS232 channels (COM1, COM3, COM4).
- Efficient command-response architecture minimizes latency.

Capacity:
- Each EX9523 acts as three addressable RS232 nodes (AA, AA+1, AA+2).
- Supports up to 256 addressable modules on a single RS485 network.

Efficiency:
- Hardware watchdog ensures continuous operation.
- EEPROM retains configuration across power cycles.
- Buffer mechanism allows temporary storage of unsolicited RS232 data.

Limitations:
- RS232 ports limited to 3-wire or 5-wire configurations.
- RS485 communication limited to half-duplex mode.
- Firmware updates require physical connection via RS232.

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### 8. Standards & Compliance

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

Environmental Compliance:
- Operating temperature: -25°C to +75°C
- Storage temperature: -40°C to +80°C
- Fanless, industrial-grade design suitable for harsh environments.

Regulatory Compliance:
- Designed for industrial automation and control applications.
- Meets general EMC and safety requirements for industrial communication devices.

Firmware and Protocol Standards:
- ASCII-based command protocol.
- XMODEM file transfer protocol for firmware updates.
- ROM-DOS (Datalight) embedded operating system.

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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 available from manufacturer’s website.

Maintenance:
- Minimal maintenance required due to fanless design.
- Periodic inspection of connectors and power supply recommended.
- Firmware can be updated via RS232 to maintain compatibility and performance.

Software Tools:
- Compatible with standard terminal emulation software (e.g., HyperTerminal, Tera Term).
- Configuration via ASCII command interface—no proprietary software required.

Reliability Features:
- Watchdog timer for automatic system recovery.
- EEPROM-based configuration retention.
- INIT mode for recovery from misconfiguration.

Model Comparison (EX952N Series):

| Model | COM1 | COM2 | COM3 | COM4 | COM5–8 | Notes |
|------------|-----------|-----------|-----------|-----------|-------------|------------|
| EX9521D | RS232 (5-wire) | RS485 | — | — | — | Basic 2-port model |
| EX9522D | RS232 (5-wire) | RS485 | RS232 (3-wire) | — | — | Dual RS232 model |
| EX9523D | RS232 (5-wire) | RS485 | RS232 (3-wire) | RS232 (3-wire) | — | Triple RS232 model |
| EX9527D | RS232 (5-wire) | RS485 | RS232 (3-wire) | RS232 (3-wire) | RS232 (3-wire) ×4 | 8-port expansion model |

Address Mapping (EX9523):
- COM1 (RS232): Address = AA
- COM2 (RS485): Shared bus
- COM3 (RS232): Address = AA + 1
- COM4 (RS232): Address = AA + 2

Default Communication Parameters:
- Baud rate: 9600 bps
- Data bits: 8
- Parity: None
- Stop bits: 1
- Checksum: Disabled
- End character: None (CrLfMode = 4)

Firmware Version Reading Example:
- Command: `$01F` → Response: `!01A2.0` (Version 2.0)

Module Identification Example:
- Command: `$01M` → Response: `!019523` (Module name EX9523)

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### Summary

The EX9523 Addressable RS422/485 to RS232 Converter is a robust, industrial-grade communication interface designed for multi-port serial integration in distributed control systems. With its Intel 80188 CPU, embedded ROM-DOS OS, and flexible configuration capabilities, it provides a reliable bridge between legacy RS232 devices and modern RS485 networks. Its addressable architecture, watchdog protection, and wide temperature tolerance make it ideal for automation, instrumentation, and remote monitoring applications. The EX9523’s combination of performance, configurability, and durability ensures dependable operation in demanding industrial environments.