Voltage monitoring system utilizing first and second banks of channels and exchanged encoded channel numbers for taking redundant safe action

A voltage monitoring system, comprising:

• a first feedback line being coupled to a high voltage end of a contactor;
• a second feedback line being coupled to a low voltage end of the contactor;
• a microcontroller having a first application, a hardware abstraction layer, a digital input-output device, and an analog-to-digital converter with a first bank of channels;
• a first channel of the first bank of channels being electrically coupled to the first feedback line;
• the first application sending a first request message to the hardware abstraction layer utilizing a call instruction that requests a first voltage value from the first channel, the first request message having a first encoded channel number associated with the first channel;
• the hardware abstraction layer determining a first channel number by reading a first record of a first table stored in a memory device utilizing the first encoded channel number as an index, the first record of the first table having the first encoded channel number and a first channel number therein, the first channel number being associated with the first channel;
• the hardware abstraction layer sending a first response message having a second encoded channel number and a first voltage value from the first channel to the first application;
• and
• the first application commanding the digital input-output device of the microcontroller to generate first and second control signals that are received by first and second voltage drivers, respectively, to transition the contactor to an open operational state, if the second encoded channel number is not equal to a first expected encoded channel number.