Siemens s7-300 PLC Analog Input ModuleModel: 6ES7331-7NF1O-0AB0Origin: Germany8 inputs in 4 channel groupsProgrammable measurement type at each channel group – Voltage – CurrentProgrammable resolution for each channel group (15 bits + sign)Any measuring range per channel groupProgrammable diagnostics and diagnostic interruptProgrammable limit value monitoring for 2 channelsProgrammable hardware interrupt when limit is exceededHigh-speed update of measured valuesElectrically isolated to the CPU