The PmCommData object named data includes a Parameters page where Special Parameters are defined (see PmModbusMr - Driver for communication by Modbus Master protocol). On the Data page, the items are imported by the data extensions of the items defined in the PmData object (see ExtComm). Each Data corresponds to the selected device type by its structure and name according to the description provided by the manufacturer.
|The name of created object||Name of the object created in the application object tree. This is a system name and must not contain empty string, diacritics, spaces and the first character must not be a number.|
|Serial port||Selection of the communication serial port.|
After this preconfiguration is created, the configurator is se to: PmComm > Settings of the serial link parameters > Serial port.
Not set - The object is not connected to any port at the start of the application and the serial port can be selected dynamically by the algorithm (by the PmComm.OpenPort method).
Modem - The object is meant for the data transfer over the dialed phone line (over the PmModem object). The serial port is assigned by the PmModem.SetPmComm method or by the PmComm object configurator of the PmModem object.
COM1, COM2,..,COM66 - The specified serial port is opened at the start of the application. This port must be correctly configured and accessible in the OS Windows (no one can use it).
For serial link each PmComm object must have defined another communication port. For example, when one PmComm object communicates through COM1, then next PmComm object can communicate for example through COM2 (COM3,..) but it mustn't communicate through COM1.
|Baud rate||Selection of the baud rate (bps, bit per second). |
This configurator sets the initial value of the property BaudRate.
After this preconfiguration is created, the configurator is se to: PmComm > Settings of the serial link parameters > Baud rate
|Default PLC address||Valid device address within the MODBUS network. See:Default PLC address|
|Communication refresh rate [ms]||The time period in milliseconds to be used for reading the data by the PROMOTIC application. After this preconfiguration is created, the configurator is se to: PmCommData > Parameters > Communication refresh rate [ms]|