{"product_id":"allen-bradley-1746-bas-slc-500-basic-module-1","title":"Allen-Bradley 1746-BAS SLC 500 BASIC Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1746-BAS\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as a highly versatile co-processor for the SLC 500 platform. This module executes complex mathematical calculations and custom serial communication strings independently of the main PLC processor's scan cycle. It bridges the gap between standard ladder logic and advanced data manipulation, allowing engineers to interface directly with specialized peripheral devices such as barcode scanners, scales, and non-Rockwell HMI terminals. We offer this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Factory Original\u003c\/strong\u003e, ensuring peak performance for your legacy system maintenance.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBASIC Programming Language Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eUser Memory\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24k Bytes (Battery-backed RAM)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSerial Ports\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 Ports (Supporting RS-232\/423 and RS-422)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNetwork Port\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 DH-485 Port (RS-485)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eForm Factor\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSingle-slot SLC 1746 Chassis Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eStatus Indicators\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMultiple LEDs for Program \u0026amp; I\/O Status\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5 in x 2 in x 6 in\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.55 lbs (0.25 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCustom Protocol Development:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1746-BAS executes user-written BASIC code to handle ASCII data streams. This capability allows the SLC 500 to communicate with virtually any serial device, even those lacking native Rockwell drivers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOff-Scan Processing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBy offloading complex calculations and serial polling to the 1746-BAS, the main CPU maintains a faster and more consistent scan time. This architecture optimizes the performance of high-speed machine control tasks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Interface Selection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module features dual serial ports with switch-selectable electrical interfaces (RS-232, RS-422, or RS-423). This versatility permits long-distance communication (up to 4000 ft via RS-422) without requiring external signal converters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eData Integrity Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 24k byte battery-backed RAM secures critical variables and user programs against power loss. This ensures immediate system resumption upon power restoration, preventing the loss of machine calibration or production data.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSimplified Troubleshooting:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDedicated LED indicators on the front panel provide real-time feedback on module health and port activity. These diagnostics allow technicians to isolate communication errors quickly without deep-diving into the code.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I replace a standard SLC I\/O module with the 1746-BAS?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1746-BAS occupies a single slot in any standard 1746 chassis. However, it requires specific configuration in the I\/O rack within RSLogix 500. Ensure you assign the correct M0 and M1 file lengths to enable high-speed data transfer between the BASIC module and the SLC processor.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat software do I need to program the 1746-BAS?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou program the module using PBASIC through a standard terminal emulator (like HyperTerminal or Procomm) connected to the module's serial port. It does not use RSLogix 500 for the internal BASIC logic, only for the backplane data mapping.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this unit come with a battery installed?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhile we supply the module in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econdition, we recommend verifying the battery status upon installation. Due to the storage time typical for discontinued parts, replacing the backup battery ensures maximum reliability for your 24k RAM.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a refurbished unit or new surplus?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe guarantee that this 1746-BAS is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand remains in its original factory-sealed Allen-Bradley packaging. We do not sell used or \"pulled\" modules, providing you with a factory-fresh component for your critical infrastructure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53447179010232,"sku":"1746-BAS","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1746-BAS.jpg?v=1778229688","url":"https:\/\/www.globalpetroparts.com\/products\/allen-bradley-1746-bas-slc-500-basic-module-1","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}