get_digital_inputs(bit_start, bit_end)
Features
This function reads multiple signals at once from the digital input start contact point (start_index) to the end contact point (end_index) of the controller.
Parameters
| Parameter Name | Data Type | Default Value | Description |
|---|---|---|---|
bit_start | int | - | Beginning contact number for input signals (1-16) |
bit_end | int | - | Ending contact number for input signals (1-16) |
Note
Bit_end must be a larger number than bit_start.
Return
| Value | Description |
|---|---|
int (>=0) | Multiple contacts to be read at once Value of the combination of bits where bit_start =LSB and bit_end=MSB. |
Negative number | Failed |
Exception
| Exception | Description |
|---|---|
DR_Error (DR_ERROR_TYPE) | Parameter data type error occurred |
DR_Error (DR_ERROR_VALUE) | Parameter value is invalid |
DR_Error (DR_ERROR_RUNTIME) | C extension module error occurred |
DR_Error (DR_ERROR_STOP) | Program terminated forcefully |
Example
PY
# input contacts: No. 1=OFF, No. 2=OFF, No. 3=ON, and No. 4=ON
res = get_digital_inputs(bit_start=1, bit_end=4)
#res expected value = 0b1100 (binary number), 12 (decimal number), or 0x0C (hexadecimal number)