Siemens 6ES7531-7QF00-0AB0 SIMATIC S7-1500 AI 8xU/I/R/RTD BA 16-Bit Analog Input Module

The Siemens SIMATIC S7-1500 AI 8xU/I/R/RTD BA (6ES7531-7QF00-0AB0) is an 8-channel universal analog input module with 16-bit resolution and 0.5% operational error limit. Each channel is individually configurable for voltage, current, resistance, or RTD-style resistance-thermometer measurement, grouped in a single block of 8, with support for Pt100, Pt1000, Ni100, and Ni1000 resistance thermometers plus an address space of 16 bytes per module.

Technical Specifications

Selection Notes

The BA (basic accuracy) designation puts this module's operational error limit at +/-0.5% across the full temperature range, wider than the S7-1500 HA (high accuracy) analog input modules - choose it for standard process monitoring where 16-bit resolution is enough and the tighter HA tolerance is not required. Because all 8 channels can be individually parameterized, one module can mix, for example, several 4-20 mA transmitters with Pt100 RTDs on the same rack slot instead of splitting them across separate modules.

Applications

Used for process analog monitoring on S7-1500 stations - transmitter loops, RTD temperature sensing, and general voltage or current signal acquisition in a single 8-channel module.