Dynamic Changes - Modbus TCP Device

Since IDE 2.5.0.x.

Block Name

Modbus_TCP_Device

Description

Using this function block, we can dynamically change the parameters of Modbus TCP device. To write new parameter values, we must first enable the function block using the "Enable" input parameter, then enter the name of the communication channel ("Channel" input) and the device name ("Device" input). Then we can dynamically change parameters such as IPv4 address, port, hostname, SSCP device address or device enabling.

For the subsequent commit of the changes we made at the input of the function block, it is necessary to set the "Commit" input parameter to "True" and then a PLC restart is required, which can be invoked using the "RestartRequest" input parameter. To select the PLC restart type, there is an input parameter "RestartFlag" with which we can choose between warm, cold and system restart.

For the current reading of the values at the output of the function block, it is necessary to perform the first write in the case of dynamic changes for image (alarm channels, communication channels and devices).

Inputs

Outputs