Installation
125
Description This table describes the different areas which make up the configuration screen:
Modbus
Instances
Once installed, configure the Modbus driver and reboot the computer. All Modbus
instances are initialized.
For each Modbus instance configured a corresponding icon appears in the task bar.
Area Element
Serial Port COM Port : provides a choice for the communication port to be used,
by default COM1.
Baud rate: provides a choice for transmission speed between 300
and 19200 bits/second, by default 9600b/s.
Stop bits Allows entry of the number of stop bits used for communication, by
default 1 stop bit.
Parity Is used to set whether a parity bit is added or not, as well as its type,
such as:
Even , for even parity (default selection),
Odd , for odd parity,
None , for no parity bit
Global TimeOut Allows Reception Time-Out to be defined (in milliseconds) while the
driver is waiting for the response from the polled Modbus slave.
Inter-Char TimeOut Allows quiet time to be defined (in milliseconds), permitting detection
of a Modbus end delimiter.
If the Automatic box is checked, the value is automatically
calculated according to speed (Baud Rate).
Mode (Data Bits) RTU : the characters are coded on 8 bits in binary.
This mode is the default mode.
ASCII: the characters are coded on 7 bits in ASCII.
Apply button Allows the configuration to be saved; the file ModbusConf.ini is
created.
Undo button Allows the latest modifications not to be acknowledged.
Default button Allows parameters to be set for the different fields with default values.
Hide button Allows configuration parameters to be acknowledged, and
represents the window by an icon.
