Input module

4, 8, 16 Channel Input Modules

Paired with the fieldbus controller, the 4, 8, 16 channel 24V DC digital input modules allow for the connection of push buttons as well as any on/off signal inputs.

Wago Modules

The terminal block allows for the connection of 4, 8, or 16 dry contacts and is galvanically isolated.

  • 750-402: 4 inputs 24V
  • 750-430: 8 inpuots 24V
  • 750-1405: 16 inputs 24V

module module

Wiring

The wiring of switches is done with 24V low voltage by injecting +24V into the input terminal. This can be done as shown in the figure below, using the PLC’s 24V power supply.

module

Programming

Configuring a switch is done using the Calaos Installer software. You may need to know the input number of the switch on the PLC. For example, in the diagram above, switch 1 is connected to input 0 of the PLC, and switch 2 to input 1 of the PLC.

It’s important to note that the numbering of input terminals starts from 0 for the first terminal and then continues with the following input terminals. Thus, the first terminal is numbered 0, the next one 8 (for 8-channel terminals), and so on.