What's wrong with MWILSSON?!
Let's research the "temperature sensor" issue first, shall we...?
The are two major types of temperature sensing devices:
1. "dumb" ones, such as ordinary thermocouples (RTDs) which will vary the current running through a bi-metal junction proportionally to the temperature gradient.
2. "smart" ones, which will include the said thermocouple connected to a miniature processor which will determine the current variance and immediately "translate" and scale it into an user available analog/digital signal.
Obviously, if the "sensor" is an RTD, the user will need a dedicated PLC RTD Input Point or PLC RTD Module Point in order to acquire the signal and PLC application programming logic in order process it.
If a "smart" sensor is being used, you might not need any dedicated PLC analog circuitry at all if the sensor provides communications capabilitie; the digital (and already processed temperature data) could be directly routed within the CPU application if the controller posseses the same networking capabilities.