- **High‑Performance Embedded CPU:** AMD Am188™ ES 16‑bit microprocessor running at 40 MHz, optimized for industrial control and embedded computing. - **Integrated Memory Architecture:** - 256 KB SRAM (A617308V‑12×2) for program execution and RAM‑disk operation. - 512 KB Flash ROM (Am29F010‑70EC) for ROM‑disk and firmware storage. - 2 KB EEPROM for parameter and variable storage. - 32 bytes NVSRAM (DS1302) with 10‑year battery backup. - **Multiple Communication Ports:** - COM1: Selectable RS‑232 (5‑wire) or RS‑485 (2‑wire) interface, up to 115,200 bps. - COM2: RS‑485 (2‑wire) isolated interface, up to 115,200 bps. - COM3: RS‑232 (3‑wire) interface, up to 115,200 bps. - COM4: RS‑232 (3‑wire) interface for program download/debug, up to 115,200 bps. - **Built‑in Display and Indicators:** - Five 7‑segment LED digits capable of displaying hexadecimal characters (0–F) and symbols. - One user‑controllable LED indicator. - **Operating System:** Embedded Datalight ROM‑DOS with miniBIOS support, compatible with standard DOS executables. - **Watchdog Timer:** Hardware watchdog with 1.6 s timeout for system recovery. - **Real‑Time Clock:** DS1302 RTC, Y2K‑compliant, valid from 1980–2079, battery‑backed for 10 years. - **Wide Power Input Range:** 10 V – 30 V DC unregulated input. - **Low Power Consumption:** 2.0 W static, 3.0 W dynamic. - **Wide Temperature Range:** −40 °C to +80 °C operating, −40 °C to +85 °C storage. - **Compact, Fanless Design:** 117 mm × 71 mm × 26 mm aluminum enclosure suitable for DIN‑rail or panel mounting. - **Software Development Support:** C‑language library (9188 Library) for COM ports, LED control, EEPROM, Flash, RTC, timers, and watchdog functions.

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

- **High-Performance Embedded CPU:** Equipped with an AMD Am188™ ES 40 MHz processor, providing efficient real-time control and multitasking capabilities. - **Multi-Port Serial Communication:** - 1 × RS-485 port (COM2) - 1 × RS-232/RS-485 selectable port (COM1) - 2 × RS-232 ports (COM3, COM4) Each port supports baud rates up to 115,200 bps, enabling simultaneous communication with multiple industrial devices. - **Integrated Memory Architecture:** - 512 KB Flash ROM (Am29F010-70EC) for ROM-DOS and user applications - 512 KB SRAM (A617308V-12 × 2) for program execution and RAM-disk operation - 2 KB EEPROM for parameter storage - 32-byte NVSRAM (DS1302) with 10-year battery backup - **Real-Time Clock (RTC):** DS1302 Y2K-compliant RTC supports date/time from 1980 to 2079 with 10-year battery retention. - **Display and Indicators:** - 5-digit 7-segment LED display for numeric and alphanumeric output - 1 programmable status LED for system indication - **Industrial-Grade Design:** - Fanless operation - Compact, vibration-resistant enclosure - Wide operating temperature range (-40°C to +80°C) - DIN-rail mountable for industrial control cabinets - **ROM-DOS Operating System:** Embedded Datalight ROM-DOS provides a DOS-compatible environment for executing standard DOS applications and control programs. - **Watchdog Timer (WDT):** Hardware watchdog timer with 1.6-second reset interval ensures system reliability and automatic recovery from software faults. - **Low Power Consumption:** - Input voltage: 10–30 V DC (unregulated) - Static power: 2.0 W - Dynamic power: 3.0 W

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

- **High‑Performance Embedded CPU:** AMD Am188™ ES processor running at 40 MHz, optimized for industrial control and embedded applications. - **Integrated ROM‑DOS Operating System:** Provides a DOS‑compatible environment for running standard DOS executables, simplifying software development and deployment. - **Multiple Serial Interfaces:** - 2 × RS‑232 ports (COM3, COM4) - 1 × RS‑485 port (COM2) - 1 × RS‑232/RS‑485 selectable port (COM1) Each port supports baud rates up to 115,200 bps. - **Onboard Memory Resources:** - 512 KB Flash ROM (Am29F010‑70EC) for ROM‑DISK and firmware storage - 256 KB SRAM (A617308V‑12 × 2) for program execution and RAM‑DISK - 2 KB EEPROM for parameter storage - 32 bytes NVSRAM (DS1302) with 10‑year battery backup - **Real‑Time Clock (RTC):** DS1302 Y2K‑compliant RTC with date range from 1980 – 2079. - **Display and Indicators:** - 5‑digit 7‑segment LED display for numeric or alphanumeric output - 1 user‑controllable LED indicator - **Watchdog Timer:** Hardware watchdog with 1.6 s timeout for system reliability. - **Wide Power Input Range:** 10 – 30 V DC unregulated input. - **Low Power Consumption:** 2.0 W static, 3.0 W dynamic. - **Industrial Durability:** Fanless, vibration‑resistant, and capable of operating from −40 °C to +80 °C. - **Compact Form Factor:** 117 mm × 71 mm × 26 mm, suitable for DIN‑rail or panel mounting. - **Software Development Support:** Comprehensive C‑language library (9188 Library) for communication, LED control, memory access, timers, and watchdog management.

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

- **High-Performance Embedded CPU:** Equipped with an AMD Am188™ ES 40 MHz processor, providing reliable computing power for industrial control and communication tasks. - **Integrated Memory Architecture:** Includes 512 KB Flash ROM (Am29F010‑70EC) and 512 KB SRAM (A617308V‑12×2), supporting ROM‑DISK and RAM‑DISK configurations under ROM‑DOS. - **Multi-Port Serial Communication:** - COM1: Selectable RS‑232 or RS‑485 (up to 115,200 bps) - COM2: RS‑485 (up to 115,200 bps) - COM3: RS‑232 (up to 115,200 bps) - COM4: RS‑232 (up to 115,200 bps) Enables simultaneous communication with multiple devices such as PLCs, sensors, and HMIs. - **Built-in Real-Time Clock (RTC):** DS1302 RTC with NVRAM, Y2K-compliant, supporting date/time from 1980–2079 with 10-year battery backup. - **EEPROM and NVSRAM:** - EEPROM: 2 KB for parameter storage - NVSRAM: 32 bytes for long-term data retention (10 years battery-backed) - **Display and Indicators:** - 5-digit 7-segment LED display for numeric or alphanumeric output - One programmable LED indicator for status signaling - **Wide Power Input Range:** Accepts 10 V–30 V DC unregulated input, suitable for industrial power systems. - **Low Power Consumption:** - Static: 2.0 W - Dynamic: 3.0 W - **Rugged Industrial Design:** Fanless, vibration-resistant, and compact metal housing for DIN-rail or panel mounting. - **Operating System:** Preloaded with Datalight ROM‑DOS and miniBIOS, enabling execution of standard DOS applications. - **Environmental Tolerance:** - Operating Temperature: −40 °C to +80 °C - Storage Temperature: −40 °C to +85 °C - Humidity: 0 %–90 % non-condensing

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

The EX9188AD has 2 x RS232, 1 x RS232 / RS485 and 1 x RS485 interface and features an efficient 80188 40MHz CPU, with a 512kB Flash card, what makes it perfect for controlling devices, This TOPSCCC embedded Dos system has been developed for industrial use: is fanless, has a robust compact case which protects the device against strikes and vibration and can be mounted in industrial rails and work in a wide temperature range

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

- **High‑Performance Embedded CPU:** Equipped with an AMD Am188™ ES 40 MHz processor, offering 1 MB memory space, 1 MB I/O space, 32 GPIOs, 6 interrupts, and 2 timers for deterministic control. - **Multi‑Port Serial Communication:** Four independent communication ports: - COM1: Selectable RS‑232 or RS‑485 (up to 115,200 bps) - COM2: RS‑485 (up to 115,200 bps, 3 kV isolation) - COM3: RS‑232 (up to 115,200 bps) - COM4: RS‑232 (up to 115,200 bps, used for debugging and program download) - **Integrated Memory System:** - 256 KB SRAM (A617308V‑12×2) for program execution and RAM‑disk operation - 512 KB Flash ROM (Am29F010‑70EC) for ROM‑disk storage - 2 KB EEPROM for parameter storage - 32 bytes NVSRAM (DS1302) with 10‑year battery backup - **Built‑in Real‑Time Clock (RTC):** DS1302 Y2K‑compliant RTC supports date/time from 1980 to 2079 with 10‑year battery retention. - **Display and Indicators:** - Five 7‑segment LED displays for numeric or alphanumeric output - One user‑controllable LED indicator - **Embedded Operating System:** Pre‑installed Datalight ROM‑DOS with miniBIOS, supporting standard DOS executables and file systems. - **Watchdog Timer:** Hardware watchdog with 1.6 s timeout for system reliability and automatic reset on failure. - **Wide Power and Environmental Range:** - Input voltage: 10 V – 30 V DC (unregulated) - Power consumption: 2.0 W (static), 3.0 W (dynamic) - Operating temperature: −40 °C – +80 °C - Storage temperature: −40 °C – +85 °C - Humidity: 0 % – 90 % non‑condensing - **Compact, Fanless Design:** Dimensions 117 mm × 71 mm × 26 mm, suitable for DIN‑rail or panel mounting in industrial enclosures.

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

- **Addressable RS422/485 to RS232 Converter:** Allows multiple RS232 devices to communicate over a shared RS485 network using unique module addresses. - **High-Performance Embedded CPU:** Intel 80188 processor operating at 40 MHz ensures fast data handling and reliable communication. - **Integrated Memory Architecture:** - SRAM: 256 KB - Flash ROM: 512 KB - EEPROM: 2 KB - Embedded OS: ROM-DOS (Datalight) - **Multiple Communication Ports:** - COM1: RS232 (5-wire) - COM2: RS485 (2-wire) - COM4: RS232 (3-wire, for program download) - **Wide Operating Temperature Range:** -25°C to +75°C, suitable for industrial environments. - **Watchdog Timer:** Provides automatic fault recovery and system stability. - **Fanless Design:** Ensures silent operation and high reliability in harsh conditions. - **Flexible Power Input:** Operates on unregulated 10–30 VDC power supply. - **High-Speed Communication:** Supports up to 115.2 Kbps data rate. - **Built-in Real-Time Clock (RTC):** Enables time-stamped data logging and scheduling. - **Firmware Upgradable:** Supports program download via RS232 using Xmodem protocol. - **Addressable Command Set:** Allows configuration and control of multiple modules over a single RS485 bus.

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

- **Addressable RS422/485 to RS232 Converter:** Enables multiple RS232 devices to communicate over a shared RS485 network using unique module addresses. - **High-Performance Embedded CPU:** Intel 80188 processor at 40 MHz ensures fast command processing and stable communication. - **Integrated Memory Architecture:** - 256 KB SRAM - 512 KB Flash ROM - 2 KB EEPROM for configuration storage - **Embedded Operating System:** ROM-DOS (Datalight) provides a stable embedded environment for firmware execution and data management. - **Communication Interfaces:** - COM1: RS232 (5-wire) - COM2: RS485 (2-wire) - **Program Download Support:** Firmware updates and configuration can be performed via RS232 using Xmodem protocol. - **Watchdog Timer:** Ensures system reliability by automatically recovering from software faults or communication errors. - **Wide Power Input Range:** Operates from an unregulated 10–30 VDC supply, suitable for industrial power systems. - **Wide Temperature Operation:** -25°C to +75°C operating range, -40°C to +80°C storage range. - **7-Segment LED Display:** Provides visual feedback for baud rate and operational status. - **Fanless, Compact Design:** Ideal for embedded and industrial environments with limited space and airflow. - **Built-in Real-Time Clock (RTC):** Supports time-stamped data logging and scheduling. - **High-Speed Communication:** Supports baud rates up to 115.2 Kbps. - **Addressable Command Protocol:** Allows configuration and control via ASCII-based command sets. - **Fault Tolerance:** Hardware watchdog and EEPROM-based configuration retention ensure resilience against power loss or system resets.

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

- **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.

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

- **Addressable RS422/485 to RS232 Conversion:** Enables multiple RS232 devices to communicate over a shared RS485 network using unique module addresses. - **High-Performance Embedded CPU:** Intel 80188 processor operating at 40 MHz ensures fast and stable data processing. - **Multiple Communication Ports:** - COM1: RS232 (5-wire) - COM2: RS485 - COM3: RS232 (3-wire) - **Built-in Firmware:** Integrated “Addressable RS485 to RS232 Converter” firmware supports command-based configuration and data routing. - **Embedded Operating System:** ROM-DOS (Datalight) provides a stable, embedded runtime environment. - **Memory Resources:** - SRAM: 256 KB - Flash ROM: 512 KB - EEPROM: 2 KB - **Watchdog Timer:** Ensures system reliability by automatically recovering from software or communication faults. - **7-Segment LED Display:** Displays operational status, baud rate codes, and diagnostic information. - **Wide Operating Temperature Range:** -25°C to +75°C for industrial environments. - **Fanless Design:** Passive cooling for silent, maintenance-free operation. - **Flexible Power Input:** Accepts unregulated 10–30 VDC power supply. - **Program Download Capability:** Supports firmware and configuration updates via RS232 port using Xmodem protocol. - **Real-Time Clock (RTC) Support:** Maintains accurate timekeeping for time-stamped data operations. - **High Communication Speed:** Supports up to 115.2 Kbps data rate. - **Industrial-Grade Reliability:** Designed for continuous operation in automation and control systems.

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

- **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.

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

- **Addressable RS485 to RS232 Conversion:** Built-in firmware allows each module to be assigned a unique address, enabling multiple converters to coexist on the same RS485 network. - **Embedded Industrial CPU:** Powered by an Intel 80188 CPU running at 40 MHz, ensuring stable and efficient data processing. - **Memory Architecture:** Equipped with 256 KB SRAM, 512 KB Flash ROM, and 2 KB EEPROM for configuration storage and firmware operation. - **Embedded Operating System:** Runs ROM-DOS (Datalight), providing a robust embedded OS environment for industrial applications. - **Multiple Communication Ports:** - COM1: RS232 (5-wire) - COM2: RS485 - COM3: RS232 (3-wire) - COM4: RS232 (3-wire, used for program download) - **Wide Operating Temperature Range:** Designed for harsh industrial environments, operating from -25°C to +75°C. - **Power Flexibility:** Accepts unregulated DC power from 10 VDC to 30 VDC. - **Watchdog Timer:** Ensures system reliability by automatically recovering from communication or system faults. - **Fanless Design:** Passive cooling for silent, maintenance-free operation. - **7-Segment LED Display:** Displays status, baud rate, and diagnostic information. - **Program Download Capability:** Supports firmware and configuration updates via RS232 (COM4) using Xmodem protocol. - **Built-in Real-Time Clock (RTC):** Supports time-based operations and logging. - **High Communication Speed:** Supports up to 115.2 Kbps data rate. - **Industrial-Grade Durability:** Designed for continuous operation in demanding automation and control systems.

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

- **Addressable RS422/485 to RS232 Conversion:** Enables seamless integration of RS232 devices into RS422/485 networks, supporting addressable communication for multi-node systems. - **High-Performance Embedded CPU:** Intel 80188 processor operating at 40 MHz ensures stable and efficient data handling. - **Multiple Communication Ports:** - 4 × RS232 ports (COM1, COM3, COM4, COM5) - 1 × RS232/RS485 configurable port (COM2) - **Memory Architecture:** - SRAM: 256 KB - Flash ROM: 512 KB - EEPROM: 2 KB - Embedded OS: ROM-DOS (Datalight) - **Wide Operating Temperature Range:** -25 °C to +75 °C for industrial environments. - **Power Flexibility:** Operates on unregulated 10–30 VDC input. - **Watchdog Timer:** Provides automatic fault recovery and system reliability. - **Fanless Design:** Ensures silent operation and high durability in harsh conditions. - **Real-Time Clock (RTC) Support:** Enables time-stamped data logging and scheduling. - **Firmware Upgradable:** Supports program download via RS232 port using XMODEM protocol. - **Addressable Command Set:** Allows configuration and control of baud rate, parity, stop bits, data bits, and other communication parameters via ASCII commands. - **Built-in EEPROM Configuration Storage:** Retains module address, baud rate, and communication settings even after power loss. - **INIT Mode:** Provides a recovery configuration mode (Address=00, Baudrate=9600 bps, 8N1) for troubleshooting and reconfiguration.

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

- **Addressable RS422/485 to RS232 Conversion:** Enables multiple RS232 devices to communicate over a shared RS485 network using unique addressing. - **High-Performance Embedded CPU:** Intel 80188 processor operating at 40 MHz ensures fast command processing and stable communication. - **Multiple Communication Ports:** - 4 × RS232 ports - 1 × RS232/RS485 configurable port - Supports both 3-wire and 5-wire RS232 configurations. - **Memory Architecture:** - 256 KB SRAM - 512 KB Flash ROM - 2 KB EEPROM for configuration storage - Embedded Flash card (512 KB) for firmware and data storage. - **Embedded Operating System:** ROM-DOS (Datalight) provides a stable, DOS-compatible environment for embedded applications. - **Built-in Watchdog Timer:** Ensures system reliability by automatically recovering from software or communication faults. - **7-Segment LED Display:** Provides real-time status indication, baud rate codes, and diagnostic feedback. - **Wide Operating Temperature Range:** -25°C to +75°C for industrial environments. - **Power Flexibility:** Operates on unregulated 10–30 VDC input, suitable for field and control cabinet installations. - **Fanless Design:** Passive cooling for maintenance-free operation. - **Real-Time Clock (RTC) Support:** Maintains accurate timekeeping for data logging and scheduling. - **Program Download Capability:** Firmware and configuration updates via RS232 port using Xmodem protocol. - **Addressable Command Set:** Supports a comprehensive ASCII-based command protocol for configuration, control, and data exchange. - **Fault-Tolerant Communication:** Watchdog and checksum mechanisms ensure data integrity and system recovery.

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

- **Addressable RS422/485 to RS232 Conversion:** Allows multiple RS232 devices to communicate over a single RS485 network using addressable firmware. - **High-Performance Embedded CPU:** Equipped with an Intel 80188 CPU running at 40 MHz for reliable and fast data processing. - **Comprehensive Serial Port Configuration:** - COM1: RS232 (5-wire, used for program download) - COM2: RS485 (2-wire, supports addressable communication) - COM3–COM8: RS232 (3-wire) - **Embedded Operating System:** Runs ROM-DOS (Datalight) for stable embedded operation and file management. - **Memory Resources:** - SRAM: 256 KB - Flash ROM: 512 KB - EEPROM: 2 KB - Additional Flash Card: 512 KB - **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 an unregulated **10–30 VDC** power supply, suitable for field and automation systems. - **Watchdog Timer:** Built-in hardware watchdog ensures system reliability and automatic recovery from faults. - **Fanless Design:** Passive cooling for silent, maintenance-free operation. - **High-Speed Communication:** Supports baud rates up to **115.2 Kbps**. - **Programmable Configuration:** Fully configurable via RS485 commands for baud rate, parity, stop bits, data bits, and addressing. - **Built-in Real-Time Clock (RTC):** Supports time-based operations and logging.

Manufacturer: TOPSCCC

Category: Modules RS485/RS232

- **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.

Manufacturer: TOPSCCC

Category: Modules RS485/RS232