This listing is for a USED FANUC A03B-0819-C011. It supports discrete signal interfacing within FANUC robot control systems, handling communication between external devices and controller I/O through multiple high-density connection points and dedicated field interface ports operating with 24V control signals.

This listing is for a USED Siemens 6ES7 321-1BL00-0AA0. It provides digital input signal acquisition for 24 VDC field devices within SIMATIC S7-300 systems, supporting high-density monitoring of discrete signals from sensors and control devices in industrial automation environments.