Allen-Bradley 1746-BAS PLC BASIC Language Module

Allen-Bradley 1746-BAS: Procurement Strategy for the SLC 500 BASIC Language Module

The Allen-Bradley 1746-BAS is a single-slot BASIC language interpreter module engineered for the SLC 500 modular controller platform. For procurement managers and plant engineers operating legacy automation infrastructure, this module occupies a critical position in the control architecture — it bridges the gap between the SLC 500 backplane and external serial devices, enabling custom BASIC program execution without requiring an external runtime PC. Understanding how to source this component reliably, at the right cost, and with documented traceability is the central challenge this page addresses.

The 1746-BAS is not a commodity item available from every distributor shelf. Rockwell Automation has progressively moved its portfolio toward ControlLogix and CompactLogix platforms, which means SLC 500 peripheral modules like the 1746-BAS are increasingly sourced through specialist industrial suppliers rather than tier-one distribution. This reality shapes the procurement calculus: buyers must weigh availability risk, lead time exposure, and total cost of ownership against the operational continuity of existing SLC 500 installations.

At siemensplc.com, we maintain dedicated stock of SLC 500 series modules sourced through verified industrial channels. Our Xiamen-based operations provide direct access to Asia-Pacific surplus and OEM-adjacent supply networks, enabling us to fulfill both spot orders and scheduled blanket purchase agreements with consistent lead times.

Request an Official Quote: [email protected] | WhatsApp: +86 18359268345

Procurement Specifications

• Manufacturer: Allen-Bradley (Rockwell Automation)
• Part Number / SKU: 1746-BAS
• Platform: SLC 500 Modular Controller Series
• Module Function: Embedded BASIC Language Interpreter with Dual Serial I/O
• Communication Ports: 2 × RS-232C (Channel 0 and Channel 1), independently configurable
• Baud Rate Range: 300 bps to 19,200 bps per channel
• User Program Memory: 32 KB RAM; optional 32 KB EEPROM for non-volatile backup
• Backplane Current Draw: 800 mA @ 5 VDC
• Operating Temperature: 0 °C to 60 °C (32 °F to 140 °F)
• Storage Temperature: −40 °C to +85 °C
• Relative Humidity: 5% to 95%, non-condensing
• Form Factor: Single-slot SLC 500 modular chassis card
• Compatible Chassis: 1746-A4, 1746-A7, 1746-A10, 1746-A13
• Compatible Processors: SLC 5/01 through SLC 5/05 (1747-L5xx series)
• Certifications: UL Listed, CE Marked (EMC Directive 2014/30/EU), CSA Certified (Class I Div 2)
• HS Code: 8537.10
• Unit Weight: Approx. 260 g
• Lead Time: In-stock units ship within 1–3 business days of order confirmation. For bulk orders (5+ units), contact us for a dedicated lead time commitment. Pre-order allocation available for scheduled maintenance windows.
• Minimum Order Quantity: 1 unit; volume pricing tiers available from 3 units

Total Cost of Ownership (TCO) Analysis

When procurement teams evaluate the 1746-BAS, the unit purchase price is rarely the dominant cost variable. The more consequential figures are the costs associated with unplanned downtime, emergency sourcing premiums, and the labor burden of extended troubleshooting when a failed module cannot be replaced promptly.

Downtime Risk Quantification: In a typical discrete manufacturing environment, unplanned line stoppages attributable to a failed communication or specialty module carry a cost ranging from several hundred to several thousand dollars per hour, depending on throughput value and labor overhead. The 1746-BAS, when used for serial device integration — barcode scanners, weigh scales, serial printers — sits on a path that, if interrupted, can halt data capture or recipe management functions that downstream processes depend on. A facility without a spare unit on the shelf is exposed to this risk for the full duration of emergency sourcing, which, for a legacy module, can extend to days or weeks through standard distribution channels.

Sourcing from siemensplc.com reduces this exposure in two ways: First, our maintained inventory means the replacement cycle begins within hours, not days. Second, our 12-month functional warranty eliminates the risk of receiving a defective unit that restarts the downtime clock — a scenario that is not uncommon when sourcing from unverified secondary markets.

CAPEX Deferral: Many facilities operating SLC 500 infrastructure face a strategic choice between platform migration (a significant capital expenditure) and extending the productive life of existing hardware. Sourcing reliable replacement modules like the 1746-BAS at competitive pricing directly supports the OPEX-funded maintenance model, deferring migration CAPEX until it is strategically justified rather than operationally forced. A single avoided emergency migration project typically represents a cost avoidance that dwarfs years of module procurement spend.

OPEX Efficiency: Our pricing structure for repeat buyers and blanket orders reduces the administrative overhead of reactive procurement. Consolidated invoicing, consistent documentation packages, and a single point of contact for SLC 500 module needs reduce the per-transaction cost of procurement operations — a measurable OPEX benefit for facilities managing dozens of legacy controller types.

Warranty Coverage: Every 1746-BAS unit shipped from siemensplc.com carries a 12-month functional warranty. If a module fails under normal operating conditions within this period, we provide replacement or credit — no protracted RMA process. This warranty period aligns with most annual maintenance budget cycles, providing a clean cost boundary for financial planning.

Quality & Compliance Assurance

Every unit of the Allen-Bradley 1746-BAS dispatched from siemensplc.com is subject to a documented pre-shipment verification process. We do not list or ship modules that have not passed physical authenticity inspection, including label integrity checks, catalog number verification, PCB marking review, and firmware revision confirmation where accessible.

100% Genuine Product Commitment: We source exclusively from documented industrial supply channels — authorized distributor surplus, OEM-adjacent stock, and factory-sealed inventory. Supplier documentation is retained on file and available to qualified buyers upon request. We do not deal in remarked, remanufactured, or counterfeit components.

Xiamen Customs Compliance: All export shipments are processed through Xiamen Customs with full commercial documentation: commercial invoice, packing list, certificate of origin, and HS code classification (8537.10). We support Form E (ASEAN preferential origin) and other origin documentation upon request. Our export compliance process is aligned with Chinese customs regulations and international trade documentation standards, ensuring clean clearance at destination ports.

Multi-Currency Payment Support: We accept payment in USD, EUR, HKD, CNY, and other major currencies. Wire transfer (T/T), PayPal, and trade finance arrangements are available for qualified accounts. Proforma invoices are issued in the buyer’s preferred currency upon order confirmation.

Strategic Sourcing from Xiamen

Xiamen is one of China’s five original Special Economic Zones and has developed into a mature international logistics hub with direct sea and air freight connections to major industrial markets across Southeast Asia, the Middle East, Europe, and the Americas. For industrial component procurement, this geographic position translates into concrete operational advantages.

Air freight via Xiamen Gaoqi International Airport provides access to DHL Express, FedEx International Priority, and UPS Worldwide services with competitive transit times: 2–4 business days to most of Southeast Asia and the Middle East, 3–5 business days to Europe, and 4–6 business days to North America. For bulk or non-urgent shipments, Xiamen Port — one of China’s top container ports by throughput — offers consolidated sea freight options that significantly reduce per-unit shipping cost on larger orders.

Our warehouse operations in Xiamen are structured for export efficiency: ESD-safe storage for sensitive electronic modules, consolidated packing for multi-line orders, and same-day dispatch capability for in-stock items ordered before 14:00 CST. This infrastructure means that a procurement order placed in the morning can be in transit to the buyer’s facility by end of business the same day.

For buyers in ASEAN markets, Xiamen’s proximity and established freight lanes provide a sourcing alternative that is both cost-competitive and logistically reliable — reducing dependence on longer supply chains from North American or European distribution centers for legacy industrial components.

Contact Information

To request a formal quotation, confirm stock availability, or discuss volume pricing and lead time commitments for the Allen-Bradley 1746-BAS, contact our procurement team directly:

• Email: [email protected]
• WhatsApp: +86 18359268345
• Website: siemensplc.com

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