COM_MOD_MASTΒΆ
| Parameter | Value |
|---|---|
| Library_File_Name | Modbus_AC500_V10.lib |
| Firmware | V1.0 |
| Type | Type_Function_Block_History |
| Group | Modbus |
The Function Block COM_MOD_MAST realizes the Modbus master function for the Modbus interface of the controller (COM1, COM2) specified at input COM.
For each interface, a separate COM_MOD_MAST Function Block must be used.
Prior to the use of COM_MOD_MAST for an interface, the particular interface has to be configured via the controller configuration of the Control Builder (PS501) (see The AC500 PLC configuration: AC500 PLC Configuration AC500 PLC Configuration as the Modbusmaster interface.
With each FALSE > TRUE edge at input EN, the Function Block COM_MOD_MAST reads the values at the inputs, generates a telegram according to the inputs and sends this telegram to the slave.