Honeywell 621-0012 ASCII Communication Module

The Honeywell 621-0012 ASCII Communication Module is a specialized interface module designed for the Honeywell IPC 620 control system series. It provides reliable ASCII-based communication between the controller and external devices such as printers, operator interfaces, barcode readers, and custom terminals. Its robust design and proven performance make it ideal for industrial environments where precise, text-based communication is required.

This module integrates seamlessly into Honeywell’s industrial control framework, allowing ASCII data to be transmitted or received through RS-232 or RS-422/485 serial connections. It supports multiple baud rates, parity configurations, and character lengths, ensuring compatibility with a wide range of third-party equipment. The 621-0012 is especially useful in applications that require formatted data exchange, report generation, or operator-driven command input.

Product Parameters

Product Applications

The Honeywell 621-0012 ASCII Communication Module is widely used in:

• Data Logging and Reporting – Enables direct printing of process logs and reports via serial printers.

• Operator Interface Connectivity – Links operator terminals for command input and system monitoring.

• Barcode and RFID Systems – Integrates identification devices for automated inventory and tracking.

• SCADA Integration – Acts as a communication bridge between the control system and SCADA equipment.

• Custom Device Communication – Supports legacy and proprietary equipment requiring ASCII messaging.

Product Advantages

• Versatile Serial Communication – Supports both RS-232 and RS-422/485 for long or short-distance connections.

• High Compatibility – Works with a wide range of ASCII-based devices, ensuring flexible integration.

• Robust Industrial Design – Built to operate reliably in harsh factory conditions.

• Configurable Communication Settings – Fully adjustable baud rate, parity, and flow control to meet system needs.

• Seamless Honeywell Integration – Fully compatible with IPC 620 racks, reducing installation complexity.

• Stable Data Transmission – Minimizes data loss and communication errors with built-in diagnostics.

FAQ

1. What serial communication standards does the 621-0012 support?

   RS-232 and RS-422/485.

2. Can the baud rate be configured by the user?

   Yes, via system configuration tools.

3. Does the module support both hardware and software flow control?

   Yes, RTS/CTS and XON/XOFF are available.

4. What is the maximum cable length for RS-422/485 communication?

   Up to 1,200 meters (4,000 feet) depending on baud rate and cable type.

5. Can the module be hot-swapped?

   No, it should be installed or removed with system power off.

6. Is it possible to send binary data through this module?

   No, it is designed specifically for ASCII character-based communication.

7. How many ASCII communication ports are available?

   One dedicated port, configurable for RS-232 or RS-422/485.

8. Does the module have internal diagnostics for communication errors?

   Yes, it can detect framing, parity, and overrun errors.

9. Is there support for multi-drop serial connections?

   Yes, when using RS-422/485 mode.

10. What configuration software is needed?

    Honeywell’s IPC 620 system configuration utility.