Control Box I/O

The control box has 4DI/4DO/2AI/2AO. For details on the interface correspondence, please refer to the User Manual.

Relational Judgment Operators

• The relation parameter that appears in the interface is generally used to compare the relationship between the actual acquired value and the given value. The available relationships are as follows:

Relation	Notation	Description
Equal	eq == =	Analog quantities have precision errors
Not Equal	neq ne != <> ~=	Analog quantities have precision errors
Less Than	lt <
Less Than or Equal	lte <=
Greater Than	gt >
Greater Than or Equal	gte >=

set_do auto_sync

Set digital output (control box).

set_do(pin, value)

• Parameters
  • pin: Port, starting from 0.
  • value: Value to be set, 0 for off / 1 for on.

Compatibility Note

In version 2.2 and earlier, the command was written as:

set_dio(pin, value)

get_di

Get digital input (control box).

get_di(pin)

• Parameters
  • pin: Port, starting from 0.

Compatibility Note

In version 2.2 and earlier, the command was written as:

get_dio(pin)

wait_di auto_sync

Wait for digital input (control box).

wait_di(pin, value, relation)

Blocking wait for the input value of the specified port to meet the specified condition, polling every 10ms.

• Parameters
  • pin: Port, starting from 0.
  • value: Value to be compared.
  • relation: Relational judgment operator.

Example Program

• Wait until DI1 is in high level state.

wait_di(1, 1, "=")

set_ao auto_sync

Set analog output (control box).

set_aio(pin, value)

• Parameters
  • pin: Port, starting from 0.
  • value: Value to be set, specify voltage or current value according to the output type.

Example Program

• Set AO0 output to 3V.

set_ao(0, 3)

Compatibility Note

In version 2.2 and earlier, the command was written as:

set_dio(pin, value)

get_ai

Get analog input (control box).

get_ai(pin)

• Parameters
  • pin: Port, starting from 0.

Example Program

local ai0 = get_ai(0)
print(ai0)

Possible output:

3.3

Compatibility Note

In version 2.2 and earlier, the command was written as:

get_aio(pin)

wait_ai auto_sync

Wait for analog input (control box).

wait_ai(pin, value, relation)

• Parameters
  • pin: Port, starting from 0.
  • value: Value to be compared.
  • relation: Relational judgment operator.

Example Program

• Wait until the voltage of AI1 is less than or equal to 4 V.

wait_ai(1, 4.0, "<=")

Compatibility Note

In version 2.2 and earlier, the command was written as:

wait_aio(pin, value, relation)