Input/Output instructions
Use Input/Output instructions to read or write data to or from a controller or module using signals sent to a device that is physically connected to a programmable logic controller. Input relays transfer signals to internal relays and output relays transfer signals to external output devices.
Instruction | Description |
|---|---|
Updates inputs prior to normal output scan. | |
Updates outputs prior to normal output scan. | |
Scales the input value according to the output range. | |
Turns the pulse width modulation (PWM) output for a configured PWM channel ON or OFF. |
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