Siemens Simatic S7-400 - Manual (Page 338)

Analog Modules
5-122
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
5.23 Analog Input Module SM 431; AI 8 RTD 16 Bit;
(6ES7 431-7KF10-0AB0)
Characteristics
The analog input module SM 431; AI 8 RTD 16 Bit has the following features:
• 8 differential inputs for the resistance thermometer
• Resistance thermometer can be parameterized
• Linearization of the resistance thermometer characteristic curves
• 16-bit resolution
• Update rate of 25 ms for 8 channels
• Programmable diagnostics
• Programmable diagnostic interrupt
• Programmable hardware interrupt when limit has been exceeded
• Analog section isolated from CPU
• The maximum permissible common mode voltage between the channel and the
central ground point is 120 VAC
Calibration Software
The analog input module AI 8 x RTD x 16 Bit; (6ES7431-7KF10-0AB0) is delivered
with the software “S7-400 RTD User Calibration” on two diskettes. After installing
the software, you can define user-specific calibration values for each channel and
and each module input range. You will find further information under ID 12436891
at the Customer Support FAQ site.