The PmaCommGroup object named "data" includes a "Parameters" tab where Special Parameters are defined (see PmModbusMr - Driver for communication by the Modbus Master protocol). On the "Data" tab, the items are imported by data extension of items defined in the PmaData object (see ExtComm). Each Data corresponds to the selected device type by its structure and name stated in the description of manufacturer protocol.
|The name of created object||Name of the object created in the tree of Pma objects. The maximum name length is 30 characters. This is a system name, so it must contain only alphanumeric and must not contain any diacritics, empty string, spaces and the first character must not be a number.|
|Serial port||Selection of the communication serial port. |
After the preconfiguration is created, the "PmaComm > Setting the parameters of the serial link > Serial port" configurator will be set to this value.
Not set - The object is not connected to any port after starting the application and the serial port can be selected dynamically by the algorithm (by the PmaComm.OpenPort method).
COM1, COM2,..,COM66 - The specified serial port is opened after starting the application. This port must be correctly configured and accessible in the OS Windows (no one can use it).
For serial link each PmaComm object must have defined another communication port. For example, if one PmaComm object communicates through COM1, then next PmaComm 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 BaudRate property.
After the preconfiguration is created, the "PmaComm > Setting the parameters of the serial link > Baud rate" configurator will be set to this value.
|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 current data by the PROMOTIC application. |
After the preconfiguration is created, the "PmaCommGroup > Parameters > Communication refresh rate [ms]" configurator will be set to this value.