Logical I/O Line State
Logical I/O line state
The (logical) state of an I/O line is the logical state of an electrical signal of the I/O control block:
- For input-capable I/O lines: the LineInput signal: a point in the input path of the I/O control block that is located after the Input Inverter.
- For output-only I/O lines: the LineOutput signal, a point in the output path of the I/O control block that is located before the Output Inverter.
Getting the state of a single I/O line
- Step1: Select an I/O line by assigning the appropriate value to the
LineSelector
feature - Step2: Obtain directly the line status by getting the value of the
LineStatus
feature
Getting the state of all I/O lines in a single operation
Get the value of the LineStatusAll
feature.
Each bit of the integer corresponds to an I/O line. A bit at one corresponds to a line logical state being high.