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1756-IR12 – ControlLogix RTD input module

1756-IR12 is a current Allen-Bradley ControlLogix RTD input module (Rockwell lifecycle status: Active, read on 30 October 2026). It replaces 1 discontinued catalog number in TDL's end-of-life lookup. TDL quotes 1756-IR12 as a spare or as part of a replacement, and carries out the change on site: configuration, program changes where needed, and testing.

Catalog number	1756-IR12
Rockwell description	ControlLogix Temperature Input Module, 12 Point, RTD, Resistance, Temperature Detector Measurement, non-Isolated Inputs
Rockwell lifecycle status	Active — sold and supported (read on 30 October 2026)
Product family	ControlLogix RTD input module
Rockwell technical documents	1756-TD002

Discontinued parts this catalog number replaces

Discontinued part	Product	Lifecycle	Basis
1756-IR6I	ControlLogix 6-Channel Isolated RTD Input Module 1756-IR6I	Discontinued 31/03/2017	named by Rockwell

Migration notes

Functional replacement: 1756-IR12 (1756-TD002U p.190–191). Note: 1756-IR12 has no channel-to-channel isolation (1756-TD002U p.196); where per-channel isolation as on the IR6I is needed, see 1756-IRT8I.
ControlLogix 5560 controllers (1756-L61…L65) were discontinued on 01/06/2017; the product pages list Functional Replacement but name no catalog number, so the ControlLogix 5580 numbers in the table are TDL proposals sized by memory. The 1756-CNB/CNBR ControlNet modules have Rockwell-named replacements (1756-CN2/CN2R); for the 1756-DHRIO and 1756-RIO the Rockwell pages name no replacement.

Lifecycle status changes over time: confirm the current status on the Rockwell product page or in the Product Compatibility and Download Center before ordering.

Sources

Rockwell Automation, Rockwell product page 1756-IR12 — read on 30 October 2026
TDL, End-of-life lookup: 1756-IR6I