Read operations

Read Coils

Reads Coils

Parameters

Parameter	Description
First Address to be read	Address from where the data read begins.
Number of addresses to be read	Length of data.
Slave Address / Unit identifier	Unit identifier (previously slave address). In asynchonous mode this unit is given to the callback function.

Output

Returns a table with values, true or false.

Since

6.4

Read Digital Inputs

Read Digital Inputs

Parameters

Parameter	Description
First Address to be read	Address from where the data read begins.
Number of addresses to be read	Length of data.
Slave Address / Unit identifier	Unit identifier (previously slave address). In asynchonous mode this unit is given to the callback function.

Output

Returns a table with values, true or false.

Since

6.4

Read Holding Register

Read Holding Register

Parameters

Parameter	Description
First Address to be read	Address from where the data read begins.
Number of addresses to be read	Length of data.
Slave Address / Unit identifier	Unit identifier (previously slave address). In asynchonous mode this unit is given to the callback function.

Output

Returns a table with values.

Since

6.4

Read Input Register

Read Input Register

Parameters

Parameter	Description
First Address to be read	Address from where the data read begins.
Number of addresses to be read	Length of data.
Slave Address / Unit identifier	Unit identifier (previously slave address). In asynchonous mode this unit is given to the callback function.

Output

Returns a table with values.

Since

6.4