Allen-Bradley SLC 500 1203-SM1 SCAN port Communications Module

The

Allen-Bradley 1203-SM1

is a discontinued SLC to SCANport Communications Module designed for the SLC 500 series of programmable logic controllers (PLCs). It allows communication between an SLC processor and up to three SCANport devices. 

Key specifications

According to DO Supply, the 1203-SM1 has the following specifications: 

• Module type: Scanner communication module.

• Operating temperature: 0 to 60°C (32 to 140°F).

• Storage temperature: -40 to 85°C (-40 to 185°F).

• Relative humidity: 5 to 95%, non-condensing.

• Shock and vibration: A-B Category I.

• Power requirements: 300 mA at 5V for the SLC backplane and 60 mA at 12V for SCANport operations.

• I/O capabilities:

  • Basic mode: 2 words for output, 8 words for input.

  • Enhanced mode: 10 words for output, 32 words for input.

• Communication: Supports 16-bit logic commands, statuses, and references.

• Certifications: UL 508C and CUL. 

Discontinuation and alternatives

• Discontinued by manufacturer: Allen-Bradley has discontinued the 1203-SM1, so it is no longer available as a new product directly from Rockwell Automation.

• Availability: The module is typically available through industrial surplus and repair companies.

• Warranty: Since it is discontinued, the original manufacturer's warranty does not apply. Some sellers, like Radwell, offer their own extended warranties.

• Alternative products: Depending on the specific application, modern Rockwell Automation products or other communication modules may serve as a replacement.