1746-BAS | Allen-Bradley SLC 500 BASIC Module with 2 Serial Ports
1746-BAS | Allen-Bradley SLC 500 BASIC Module with 2 Serial Ports
1746-BAS | Allen-Bradley SLC 500 BASIC Module with 2 Serial Ports
    1746-BAS | Allen-Bradley SLC 500 BASIC Module with 2 Serial Ports
1746-BAS | Allen-Bradley SLC 500 BASIC Module with 2 Serial Ports

1746-BAS | Allen-Bradley SLC 500 BASIC Module with 2 Serial Ports

Part #: 1746-BAS Manufactured by: Allen-Bradley
$449.00
$449.00
8 in Stock
Condition: New – Open box
Shipping calculated at checkout.
Product Overview
Allen-Bradley 1746-BAS BASIC single-slot module for SLC 500 fixed or modular controller chassis with Two configurable seri...  Read more
We accept:
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa
Contact Us!

Talk to a real expert.

phone
+1 (828) 222-3490
email
sales@iqelectro.com
Mon–Sat, 7:00 AM – 8:00 PM (EST)
warranty
IQElectro 2-Year Warranty
Warranty for Product #: 1746-BAS
IQElectro offers a free 2-year warranty on all products. You can trust that every purchase is a reliable investment in the future of your company. Warranty Terms
2-3 Day Free Shipping
Packed Ready to Ship
24/7 Expert Support
Return within 30-Days
IQElectro BBB Business Review
IQElectro is Not an authorized distributor for Allen-Bradley
Original Manufacturer's Warranty Not Covered, This Product is SURPLUS.

Product Description P/N: 1746-BAS

Description / Specifications

Description 

The Allen-Bradley 1746-BAS is a BASIC Language Module for the SLC 500 platform, designed to handle advanced data processing, communication, and integration tasks. With two multi-mode serial ports and one DH-485 port, it supports connectivity to HMIs, printers, modems, data collection devices, and external systems. This module expands SLC controller functionality by providing programmable BASIC-language capability and 24 KB of battery-backed RAM for user programs and data storage.

 

 

Technical Specifications

Condition New / Never Used Surplus
Brand Allen-Bradley
Series SLC 500
Part Number 1746-BAS
Manufacturer Rockwell Automation
Module Type SLC BASIC Module
Memory 24 KB battery-backed RAM
Communication Ports PRT1: RS-232/423/422/485; PRT2: RS-232/423/422/485 or DF1; PRT3: DH-485
Backplane Current (5V) 150 mA
Backplane Current (24V) 40 mA
Indicators ACT, 485, PRT1, PRT2, FAULT, BAT LOW, LED1, LED2
Operating Temperature 32–140 °F
Clock/Calendar Accuracy ±1 min/month @ 25 °C
Shock Rating 30 g
Vibration Rating 0.015 in (5–57 Hz); 2.5 g (57–2000 Hz)
Noise Immunity NEMA Standard
Dimensions Standard SLC 500 single-slot module

  

 

Information About 1746-BAS

The 1746-BAS significantly enhances the communication and data-handling capabilities of SLC 500 processors by offering a standalone BASIC programmability environment inside the chassis. It fits in a single slot of an SLC 500 rack and supports extensive serial communication options for industrial integration. The module includes PRT1 and PRT2 serial ports, each configurable for RS-232/423, RS-422, or RS-485, enabling support for terminals, printers, HMIs, modems, and data acquisition equipment. PRT2 can additionally operate using the DF1 protocol, and when used in DF1 modem mode, the onboard DH-485 port is disabled. The DH-485 port allows integration into legacy low-speed network architectures using a 1747-AIC isolator. The 1746-BAS includes a 24 KB battery-backed RAM, providing non-volatile storage for BASIC applications and data sets. The onboard processor supports report generation, string handling, data logging, and machine-level integration tasks not native to standard SLC processors. Diagnostic LEDs for module activity, communication, fault status, and battery condition simplify troubleshooting. Built to NEMA noise-immunity standards, the module operates in challenging industrial environments with an operating temperature range of 32–140 °F.

Key Features:

  • BASIC-language programming environment
  • Two configurable serial ports (RS-232/423, RS-422, RS-485)
  • Dedicated DH-485 port for legacy network integration
  • Supports DF1 for modem or device communication
  • 24 KB battery-backed RAM for program and data retention
  • Eight diagnostic LEDs for system status
  • Data collection and report generation capability
  • Compatible with all SLC 500 processors (5/01 and up)
  • Single-slot modular design
  • NEMA-rated noise immunity

This module is widely used for data collection, printer formatting, barcode integration, custom communication drivers, and serial-device interfacing—making it a flexible, powerful addition to any SLC 500 system.

 

Frequently Asked Questions about 1746-BAS
Question: What is the 1746-BAS used for?
Date Update:16/06/2025
Answer:

The 1746-BAS is a user-programmable BASIC module used in SLC 500 systems to:

  • Interface with serial devices (e.g. barcode readers, modems, printers)
  • Perform custom logic processing separate from ladder logic
  • Handle ASCII communications, protocols, or device integrations not supported natively by the CPU
Question: What programming language does the 1746-BAS use?
Date Update:16/06/2025
Answer:

It is programmed in a variant of the BASIC language, with extended instructions to support:

  • SLC data file access
  • Serial communication via RS-232 ports
  • Mathematical operations and control flow

Users typically develop programs using BASCOM software, which communicates over serial connection.

Question: How is the 1746-BAS installed and powered?
Date Update:16/06/2025
Answer:
  • Installs into any SLC 500 chassis slot
  • Draws power from the backplane
  • Configuration is done through software or command line during setup

No additional power wiring is required.

Question: How do I program the 1746-BAS?
Date Update:16/06/2025
Answer:
  • Use BASCOM software (Rockwell-provided, runs on DOS or early Windows)
  • Connect a PC to Channel 1 via serial cable
  • Upload/download BASIC code using terminal commands

Program storage is battery-backed. Programs persist through power cycles.

Question: What is the memory capacity of the 1746-BAS?
Date Update:16/06/2025
Answer:
  • User RAM: 8 KB
  • User EEPROM: 8 KB (for non-volatile storage)
  • Program memory: Stores BASIC source code and variables
  • Optional external memory via EEPROM programmer
IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Allen-Bradley 1746-BAS is a BASIC Language Module for the SLC 500 platform, designed to handle advanced data processing, communication, and integration tasks. With two multi-mode serial ports and one DH-485 port, it supports connectivity to HMIs, printers, modems, data collection devices, and external systems. This module expands SLC controller functionality by providing programmable BASIC-language capability and 24 KB of battery-backed RAM for user programs and data storage.

 

 

Technical Specifications

Condition New / Never Used Surplus
Brand Allen-Bradley
Series SLC 500
Part Number 1746-BAS
Manufacturer Rockwell Automation
Module Type SLC BASIC Module
Memory 24 KB battery-backed RAM
Communication Ports PRT1: RS-232/423/422/485; PRT2: RS-232/423/422/485 or DF1; PRT3: DH-485
Backplane Current (5V) 150 mA
Backplane Current (24V) 40 mA
Indicators ACT, 485, PRT1, PRT2, FAULT, BAT LOW, LED1, LED2
Operating Temperature 32–140 °F
Clock/Calendar Accuracy ±1 min/month @ 25 °C
Shock Rating 30 g
Vibration Rating 0.015 in (5–57 Hz); 2.5 g (57–2000 Hz)
Noise Immunity NEMA Standard
Dimensions Standard SLC 500 single-slot module

  

 

Information About 1746-BAS

The 1746-BAS significantly enhances the communication and data-handling capabilities of SLC 500 processors by offering a standalone BASIC programmability environment inside the chassis. It fits in a single slot of an SLC 500 rack and supports extensive serial communication options for industrial integration. The module includes PRT1 and PRT2 serial ports, each configurable for RS-232/423, RS-422, or RS-485, enabling support for terminals, printers, HMIs, modems, and data acquisition equipment. PRT2 can additionally operate using the DF1 protocol, and when used in DF1 modem mode, the onboard DH-485 port is disabled. The DH-485 port allows integration into legacy low-speed network architectures using a 1747-AIC isolator. The 1746-BAS includes a 24 KB battery-backed RAM, providing non-volatile storage for BASIC applications and data sets. The onboard processor supports report generation, string handling, data logging, and machine-level integration tasks not native to standard SLC processors. Diagnostic LEDs for module activity, communication, fault status, and battery condition simplify troubleshooting. Built to NEMA noise-immunity standards, the module operates in challenging industrial environments with an operating temperature range of 32–140 °F.

Key Features:

  • BASIC-language programming environment
  • Two configurable serial ports (RS-232/423, RS-422, RS-485)
  • Dedicated DH-485 port for legacy network integration
  • Supports DF1 for modem or device communication
  • 24 KB battery-backed RAM for program and data retention
  • Eight diagnostic LEDs for system status
  • Data collection and report generation capability
  • Compatible with all SLC 500 processors (5/01 and up)
  • Single-slot modular design
  • NEMA-rated noise immunity

This module is widely used for data collection, printer formatting, barcode integration, custom communication drivers, and serial-device interfacing—making it a flexible, powerful addition to any SLC 500 system.

 

Check Out These Related Products