Siemens 6ES7531-7MH00-0AB0 SIMATIC S7-1500 AI 16xI BA Analog Input Module

The Siemens 6ES7531-7MH00-0AB0 is a SIMATIC S7-1500 analog input module with 16 current-measuring channels, 16-bit resolution, and 0.5% basic accuracy across 0-20 mA, 4-20 mA, and -20/+20 mA ranges. Front connectors for screw or push-in wiring are ordered separately, and diagnostics include wire-break and limit-value alarms for process measurement applications.

Technical Specifications

Selection Notes

BA (Basic Accuracy) trades tighter accuracy for 16 channels in a single module — a High Feature or High Speed AI variant with fewer channels is the better choice where sub-0.1% error or faster conversion is required. The 0-20 mA, 4-20 mA, and -20/+20 mA ranges are software-selectable per channel, so the same module covers standard 4-20 mA transmitters and bidirectional current signals without hardware changes. Front connectors, screw or push-in, are a separate order item — confirm terminal type before checkout.

Applications

Fits SIMATIC S7-1500 racks reading multiple 4-20 mA process transmitters — pressure, temperature, flow — where channel density matters more than per-channel accuracy, such as utility or tank farm monitoring panels.