Digital input IO, including PNP and NPN digital input IO, counter input IO, etc.
Digital output IO, including PNP and NPN digital output IO, PWM pulse output IO, relay output IO, and so on.
Analog input IO, including current acquisition input IO, voltage acquisition input IO, temperature acquisition input IO, and so on. The current collection range of the current input IO is 0 to 20mA, etc. The voltage collection range of the voltage input IO is negative 10V to positive 10V, etc. The temperature collection IO has thermocouples and thermal resistors.
The style of analog output IO is similar to that of analog input IO, but does not include temperature analog, mainly voltage and current types.