Siemens Simatic M7-400 Reference Manual page 323

5.22 Analog Input Module SM 431; AI 16
(6ES7431-7QH00-0AB0)
Characteristics
The analog input module SM 431; AI 16  16 Bit has the following features:
• 16 inputs for voltage/current and temperature measurement
• 8 inputs for resistance measurement
• Unlimited measuring range selection
• 16-bit resolution
• Programmable diagnostics
• Programmable diagnostic interrupt
• Programmable hardware interrupt when limit has been exceeded
• Programmable end-of-scan-cycle interrupt
• Analog section isolated from CPU
• The maximum permissible common mode voltage between the channels and
between the channel and the central ground point is 120 VAC
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Analog Modules
16 Bit;
5-107