| Attribute | Value |
|---|---|
| Product Name | Allen-Bradley SLC 500 Basic Module 1746-BAS |
| Brand | Allen-Bradley |
| Series | SLC 500 |
| Catalog Number | 1746-BAS |
| Series (SER) | C |
| Firmware Revision Number (FRN) | 6 |
| Module Type | Basic Module |
| Win Code | WIN(21)1P0YK1EE |
| Manufacturing Code | 1002FAC.1P |
| Operating Temp. Code | T3C |
| Class & Division | Class I, Groups A, B, C, D, Div. 2 |
| Other Codes | D2S GQ4 D3 98954-689 0238 |
| Additional IDs | A40851-150-51 F 51F / 40851-149-03A |
| PCB Identifier | KALEX K638 94V-0 |
| Voltage Rating | 2.3 |
| Country of Manufacture | Made in U.S.A. |
| Weight | 260 gm |
What is the Allen-Bradley 1746-BAS Module?
The 1746-BAS is a BASIC programming module that mounts in the SLC 500 rack. It is a bridge between the controller and external devices for communication over serial interfaces via the BASIC programming language.
It is best suited to applications where special serial communications are required—e.g., communicating with barcode scanners, scales, printers, or other intelligent devices.
Its Series C and Firmware Revision 6 (FRN 6) refer to a more recent version with more polished features and improved support for newer systems.
Features of the 1746-BAS Series C
Here’s a brief overview of some of the most important features that set this module apart:
BASIC Programming Support: Allows applications to be coded in the BASIC language for custom development.
Dual Serial Ports: Comes with two RS-232 ports to provide versatile communication functionality.
Independent Operation: Operates independently of the PLC processor to minimize CPU load.
Battery Backup: Preserves program memory during power loss.
Plug-and-Play: Simple installation into any SLC 500 chassis without external modification.
FRN 6 Enhancements: Enhanced firmware provides greater stability and improved communication performance.
94V-0 Rated Board: This designation verifies the circuit board is flammability-rated for additional safety.
Technical Specifications
Below are some additional detailed specs you may want to know:
Module Type: BASIC Interface Module
Compatible System: SLC 500
Ports: 2x RS-232 (DB-9 and Mini-DIN)
Programming Language: BASIC-52 variant
Memory: 8K user memory
Power Requirements: 5V DC, supplied through the chassis
Backplane Current Draw: ~500 mA
FRN Version: 6 (Firmware Revision 6)
Board Rating: 94V-0 flame retardant standard
Applications
The 1746-BAS Series C module excels in applications where basic PLC communications are not sufficient. Some real-world applications include:
Barcode Scanning Systems: Allows barcode readers to talk directly to the SLC processor.
Weighing and Measurement: Connects with digital scales to read data for production tracking.
Printing Applications: Sends commands and data to label printers or document printers in real-time.
Legacy Device Communication: Convenient when interfacing older serial devices with new control systems.
Due to its self-contained processing and programming, this module assists in eliminating CPU load from the main CPU, thus making the entire system more efficient and responsive.
Advantages of Applying the 1746-BAS Module
Flexibility: Can handle a broad selection of industrial devices and protocols through BASIC script.
Expandability: Located in any available SLC 500 chassis slot without hardware conflict.
Cost-Effectiveness: Eliminates external communication processors.
Reliability: Constructed with industrial-grade components and reliable Allen-Bradley design.
