Module overview
3.4 Analog input modules
S7-1500 Automation System
24 System Manual, 01/2013, A5E03461182-01
3.4 Analog input modules
Overview of properties
The table below shows the essential properties of the analog input modules.
Table 3- 5 Analog input modules
Order no.: 6ES7531-7KF00-0AB0 6ES7531-7NF10-0AB0
Short description AI 8xU/I/RTD/TC ST AI 8xU/I HS
Number of inputs 8 8
Resolution 16 bits (including sign) 16 bits (including sign)
Measurement type Voltage
Current
Resistor
Thermal resistor
Thermocouple
Voltage
Current
Electrical isolation between channels No No
Rated supply voltage 24 VDC 24 VDC
Maximum potential difference between
inputs (UCM)
10 VDC 10 VDC
Diagnostic error interrupt Yes, high and low limit Yes, high and low limit
Hardware interrupt Yes Yes
Isochronous operation supported No Yes
Conversion time (per channel) 9/23/27/107 ms 125 µs, per module, regardless of
number of activated channels
Reference
Further information on the technical specifications of the modules may be found in the
respective manuals.
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