Comprehensive Product Summary – EX9527D Addressable RS422/485 to RS232 Converter

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### 1. Product Overview

Product Name: EX9527D
Model Number: EX9527D
Series: EX952N Series – Addressable RS422/485 to RS232 Converter
Article Number: EX9527D
Manufacturer: Topsccc

The EX9527D is a high-performance, industrial-grade communication converter designed to interface RS422/485 networks with multiple RS232 devices. It is part of the EX952N series, which includes models EX9521D, EX9522D, EX9523D, and EX9527D, each offering different port configurations. The EX9527D is the most advanced model in the series, featuring eight RS232 ports and one RS232/RS485 port, driven by an Intel 80188 CPU operating at 40 MHz. It integrates robust memory resources, embedded ROM-DOS (Datalight) operating system, and a watchdog timer for fault tolerance, making it suitable for industrial automation, data acquisition, and control applications.

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### 2. Key Features

- Addressable RS422/485 to RS232 Conversion: Enables seamless communication between RS485/RS422 networks and multiple RS232 devices.
- High Port Density: Provides 8 independent RS232 ports and 1 RS232/RS485 port, supporting simultaneous multi-device communication.
- Embedded 80188 CPU (40 MHz): Ensures fast data processing and reliable protocol handling.
- Integrated Memory Architecture:
- SRAM: 256 KB
- Flash ROM: 512 KB
- EEPROM: 2 KB
- Flash Card: 512 KB (for program and data storage)
- Embedded Operating System: ROM-DOS (Datalight) for stable, real-time embedded operation.
- Wide Operating Temperature Range: -25°C to +75°C, suitable for harsh industrial environments.
- Unregulated Power Input: Accepts 10–30 VDC, allowing flexible power supply options.
- Watchdog Timer: Provides automatic system recovery in case of software or hardware faults.
- 7-Segment LED Display: Displays status, baud rate codes, and diagnostic information.
- Fanless Design: Ensures silent operation and high reliability with no moving parts.
- Program Download Capability: Supports firmware and configuration updates via RS232 (COM1).
- Real-Time Clock (RTC) Support: Maintains accurate timekeeping for data logging and scheduling.
- High Communication Speed: Up to 115.2 Kbps for serial data transmission.
- Addressable Configuration: Each module and port can be assigned a unique address for networked operation.
- Command-Based Configuration: Supports a comprehensive ASCII command set for configuration, monitoring, and control.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| CPU | Intel 80188, 40 MHz |
| Memory | SRAM 256 KB, Flash ROM 512 KB, EEPROM 2 KB |
| Flash Card | 512 KB (for firmware and data storage) |
| Operating System | Embedded ROM-DOS (Datalight) |
| Communication Ports | 8 × RS232 (3-wire), 1 × RS232/RS485 (5-wire) |
| Communication Speed | Up to 115.2 Kbps |
| Power Supply | Unregulated 10–30 VDC |
| Operating Temperature | -25°C to +75°C |
| Storage Temperature | -40°C to +80°C |
| Display | 7-segment LED indicator |
| Watchdog Timer | Built-in hardware watchdog |
| RTC Support | Yes |
| Cooling | Fanless |
| Construction | Industrial-grade enclosure (metal or reinforced plastic, depending on configuration) |
| Mounting | DIN-rail or panel mount (depending on model variant) |
| Weight | Approx. 300–500 g (typical for EX9527D) |
| Dimensions | Compact industrial form factor (approx. 120 × 90 × 35 mm typical) |

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### 4. Functionality

The EX9527D functions as an intelligent, addressable converter that bridges RS422/485 networks with multiple RS232 devices. It allows a host system or master controller on an RS485 bus to communicate with up to eight RS232 devices simultaneously. Each RS232 port can be independently configured for baud rate, data bits, parity, stop bits, and delimiters.

Primary Use Cases:
- Industrial automation and control systems
- PLC and SCADA communication networks
- Data acquisition and sensor integration
- Laboratory instrumentation interfacing
- Serial device networking and remote monitoring

Operational Principle:
- The RS485 port (COM2) serves as the master communication interface.
- Commands sent via RS485 are interpreted by the EX9527D and routed to the appropriate RS232 port(s).
- Each RS232 port (COM1–COM8) can be addressed individually using hexadecimal address codes.
- Data received from RS232 devices are echoed back to the RS485 network.
- The module supports both command and bypass modes for flexible data routing.

Compatibility:
- Compatible with standard RS232 and RS485 devices.
- Supports communication with PCs, PLCs, sensors, 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:
- EX9527D main module
- 7-segment LED display (integrated)
- RS232/RS485 communication connectors (DB-9 male/female)
- Power input terminal block
- Mounting hardware (DIN-rail clip or panel bracket)

Optional Accessories:
- RS485 network cables
- RS232 serial cables (DB-9)
- External power supply (10–30 VDC)
- Flash memory card (for firmware updates)

Connectors:
- COM1: RS232 (5-wire) – used for program download and communication
- COM2: RS485 (2-wire differential) – main network interface
- COM3–COM8: RS232 (3-wire) – for device connections

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### 6. Installation & Setup

Power Requirements:
- Input voltage: 10–30 VDC (unregulated)
- Power-on sequence: Apply power with INIT* pin grounded for initialization or firmware update.

Mounting Options:
- DIN-rail mounting for industrial panels
- Panel mounting for fixed installations

Configuration Procedure:
1. Initialization Mode (INIT Mode):
- Power on the module.
- Momentarily connect INIT* pin to GND to enter INIT mode.
- Default settings: Address = 00, Baud rate = 9600 bps, Data bits = 8, Parity = None, Stop bits = 1.
2. Program Download:
- Connect COM1 (RS232) to PC.
- Use HyperTerminal with settings: 57600 bps, 8N1, no flow control.
- Select “Transfer → Receive File” and choose XMODEM protocol.
- Upload the firmware image to the module’s flash memory.
3. Normal Operation:
- Disconnect INIT* from GND after update completion.
- Configure communication parameters using ASCII command set.

Configuration Commands:
- `$AAA(addr)` – Set module address
- `$AABN(baud rate)` – Set baud rate
- `$AADN(data-bit)` – Set data bits
- `$AAPN(parity-bit)` – Set parity
- `$AAON(stop-bit)` – Set stop bits
- `$AA6(ID)` / `$AA7` – Set or read device ID strings
- `$AAC(delimiter)` / `$AAD` – Set or read data delimiters
- `$AAKN` – Enable/disable checksum
- `$AATN` – Configure end-of-line characters
- `$AAF` – Read firmware version
- `$AAM` – Read module name

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### 7. Performance & Capabilities

Communication Performance:
- Maximum baud rate: 115.2 Kbps
- Supported baud rates: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps
- Data bits: 7 or 8
- Parity: None, Even, Odd
- Stop bits: 1 or 2 (depending on port)

Addressing Scheme:
- Each module has a base address (AA).
- COM ports are mapped as follows:
- COM1 = AA
- COM2 = AA (RS485)
- COM3 = AA+1
- COM4 = AA+2
- COM5 = AA+3
- COM6 = AA+4
- COM7 = AA+5
- COM8 = AA+6

Buffer Management:
- Built-in buffer for asynchronous data reception.
- Buffer automatically re-enables after inactivity.
- Data retrieval via `$AAU` command.

Reliability Features:
- Hardware watchdog timer resets the system in case of fault.
- Status monitoring via `$AA5` command (reset status).
- RTS/CTS control supported on COM1 and COM3.

Limitations:
- COM1 and COM2 fixed to 1 stop bit.
- Parity configuration limited to “None” for COM1/COM2 on EX9527D.
- Checksum control valid only for COM2 (RS485).

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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
- Safety & Reliability:
- Watchdog timer for system recovery
- Fanless design for long-term reliability
- Firmware & Protocol Compliance:
- Supports standard ASCII command protocol
- Compatible with XMODEM file transfer protocol for firmware updates
- Industry Standards:
- Designed for industrial automation and control environments
- Meets typical EMC and electrical isolation requirements for RS485 networks

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### 9. Additional Information

Warranty:
Typically covered by a 1-year limited manufacturer warranty (varies by distributor).

Technical Support:
- Firmware updates and documentation available from Topsccc.
- Configuration utilities and manuals provided for system integrators.

Maintenance:
- No moving parts; minimal maintenance required.
- Periodic firmware updates recommended for performance optimization.
- Ensure proper grounding and shielding for RS485 networks to prevent noise interference.

Firmware Updates:
- Performed via COM1 using XMODEM protocol.
- Ensure INIT* pin is grounded during update and disconnected immediately after completion.

Troubleshooting & Diagnostics:
- LED indicators display communication status and baud rate codes.
- `$AAF` and `$AAM` commands provide firmware and module identification.
- `$AA5` command reports reset events (e.g., watchdog resets).

Support Resources:
- Quick Start and Command Reference Manuals (EX952N Series)
- Example configuration scripts for automation systems
- Technical FAQs and firmware tools available from manufacturer’s website

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### Summary

The EX9527D is a robust, multi-port, addressable RS422/485 to RS232 converter designed for industrial communication networks. With its 80188 CPU, embedded ROM-DOS OS, and comprehensive command set, it provides flexible, reliable, and high-speed serial communication across multiple devices. Its wide operating temperature range, unregulated power input, and fanless design make it ideal for demanding industrial environments. The EX9527D’s combination of configurability, performance, and durability positions it as a versatile solution for system integrators and engineers seeking to expand RS485 networks with multiple RS232 endpoints.