Write coil

This operation writes values to the coils of Modbus protocol-compatible equipment.

You can display the write coil operation screen by displaying the script canvas on the Designer screen, clicking the following items in the following order, and then dragging and dropping the component icon onto the script canvas:

  • Tool palette > Industrial equipment > Modbus > Write coil

 

Figure 5.7 Write coil operation screen

(1) Field list

This is a list of the fields to configure for the write coil operation.

Table 5.5 Field list

Field Name

Initial Value

Setting Value

Omission

Notes

Name

 

Single-byte alphanumeric characters and certain symbols (*1)

-

A value that begins with a single-byte alphabetic character

Input data

(No input data)

Name of the input data component

-

Select from list (*2)

Required settings

 

Destination

 

 

-

 

Slave ID

01

From 01 to FF

-

Select hexadecimal

Starting address

 

From 0 to 65535

-

Set as integer

Number of data

 

From 1 to 999

-

 

Comment

 

Comment

 

Characters

✓

 

✓

:

Possible to omit

-

:

Impossible to omit

*1

:

Only "_" (underscore) can be specified.

*2

:

When component icons for input or conversion are placed on the script canvas, the options are displayed in the list.

(2) Description of each field

This section explains each of the fields to configure for the write coil operation.

After changing these settings, click Finish to save the settings.

Click Cancel to discard the changes.

Name

Name of the write coil operation component

Single-byte alphanumeric characters and "_" (underscore) can be used.

Use a value that begins with a single-byte alphabetic character.

Input data

Selection of the component name of the input data for the write coil operation

From the input data component names displayed in the list, select the component name for the write coil operation.

Required settings

Destination

Modbus destination

Select the Modbus destination for writing coil.

When you click Add, the Modbus TCP connection settings screen appears.

For details on the Modbus TCP connection settings screen, refer to Modbus TCP connection settings.

When you click Edit list..., the editing screen for the resource list appears.

For details on the editing screen for the resource list, refer to Edit resource list.

Slave ID

Slave ID

Select the slave ID for writing coil.

Starting address

Starting address

Specify a numerical value from "0" through "65535" for the starting address for writing coil.

Number of data

Number of data items

Specify a numerical value from "1" through "999" for the number of data items for writing coil.

Comment

Comment

Comment regarding the write coil operation

You can enter a comment.