Allen-Bradley 1734-ARM POINT I/O Address Reserve Module

June 11, 2026 • 2 min read • wayne • Guide

Product Summary

The 1734-ARM is an address reserve module from Allen‑Bradley’s POINT I/O family. It maintains numbering schemes for installed I/O modules by reserving their slot addresses. This simplifies system engineering, reduces inventory costs, and eliminates reconfiguration when modules are later inserted.

Why Choose the 1734‑ARM for Your Procurement Plan

Procurement managers need components that reduce total cost of ownership. The 1734-ARM directly addresses this by retaining the logical structure of a control system without requiring physical I/O hardware. You can install this module before or after mounting the base, using any key position in the point I/O rack. This flexibility minimizes engineering rework and speeds up system commissioning.

The module requires a 1734‑TB or 1734‑TBS wiring base assembly. Its POINTBus current draw is just 75 milliamps, and it dissipates only 0.375 watts of power, equaling 1.3 BTU/hour maximum at 5 volts DC. These low consumption values allow you to allocate more bus power to actual signal modules. Application engineers will appreciate that the module does not produce I/O data without configuration, ensuring no unexpected behavior.

Step‑by‑Step Installation Guide for the 1734‑ARM

Mechanical mounting is straightforward. First, key the DIN rail mounting base accurately to accept the module. Insert the 1734‑ARM into any available slot; there is no designated key switch position. Secure the module by snapping it onto the base until it locks. The green/red status indicators on the logic side will show network and module health.

Wire the 1734‑TB or 1734‑TBS base according to your system layout. The module does not communicate I/O data until you configure it in your control program. For optimal performance, maintain ambient temperature between ‑20 °C and 55 °C (‑4 °F to 131 °F) and keep relative humidity below 95%, non‑condensing. This environment ensures reliable address reservation over the module’s lifetime.