Allen Bradley 1746-BAS /C SLC 500 Basic Module

Allen-Bradley 1746-BAS /C SLC 500 BASIC Module

The Allen-Bradley 1746-BAS /C is a BASIC Language Module designed to enhance the functionality of the SLC 500 series by facilitating advanced data processing and communication capabilities within industrial automation systems.

Key Features

• Programming Language: Utilizes the Intel BASIC-52 programming language with specific enhancements for industrial applications.
• Data Collection and Processing: Enables efficient data collection from external devices and supports complex data processing tasks.
• Integrated Debugging Environment: Provides an environment for program debugging, streamlining development and troubleshooting processes.
• Operator Interface Capabilities: Supports connections to Human-Machine Interfaces (HMIs), printers, modems, and other serial devices.
• Flexible Storage Options: Offers 24 KB of battery-backed RAM, with support for optional EEPROM memory modules (1747-M1 and 1747-M2) for non-volatile storage.
• Real-Time Clock/Calendar: Includes a clock/calendar feature with battery backup, ensuring accurate timekeeping for scheduled operations.

Technical Specifications

• Memory: 24 KB battery-backed RAM
• Optional Memory Modules: 1747-M1 (8 KB EEPROM), 1747-M2 (32 KB EEPROM)
• Communication Ports:
  • PRT1: RS-232/423, RS-422, RS-485
  • PRT2: RS-232/423, RS-422, RS-485; DF1
  • PRT3: DH-485
• Backplane Current: 150 mA at 5V DC; 40 mA at 24V DC
• Operating Temperature: 0°C to 60°C (32°F to 140°F)
• Clock/Calendar Accuracy: ±1 minute/month at 25°C (77°F); 0 to -6 minutes/month at 60°C (140°F)

Communication Capabilities

The 1746-BAS module is equipped with multiple communication ports to facilitate integration with various devices:

• PRT1 and PRT2 Ports: Configurable for RS-232/423, RS-422, or RS-485 communication modes, supporting baud rates from 300 to 19,200 in full-duplex mode. PRT2 can also interface with modems using the DF1 protocol.
• DH-485 Port: Designed for DH-485 network communication. Note that when PRT2 is configured for DF1 or modem use, the DH-485 port is disabled.

Installation and Maintenance

For optimal performance and longevity, consider the following guidelines:

• Installation: Mount the module in a clean, dry panel or cabinet, ensuring proper alignment within the SLC 500 chassis slot.
• Configuration: Set jumpers JW1 to JW4 according to the desired communication settings.
• Software Tools: Utilize RSLogix 500 or 1747-PBASE software for diagnostics and setup.
• Maintenance: Always power down the system before removing or inserting the module to prevent electrical damage.

Industry Applications

The 1746-BAS module is suitable for a wide range of industrial applications, including:

• Manufacturing automation
• Packaging and labeling systems
• Water treatment and utilities
• Food and beverage processing
• Automotive and material handling

By integrating the 1746-BAS module into your SLC 500 system, you can significantly enhance data collection, processing capabilities, and overall system functionality, leading to improved operational efficiency and productivity.