Vetek DGT, Technical Manual

Page: 34 / 87

DGT / DGT60 / DGTQ / DGTP
34
6.3 PROFIBUS PORT (DGT4PB, DGTQPB and DGTPPB version)
It is bidirectional and it is mainly used for connections to the PLC.
The transmission speed (baud rate) and the format of the serial word, in case of Profibus transmission, are not
modifiable in the SETUP ENVIRONMENT, but by default are set at:
Baud Rate ( or transmission speed ): 9600 bit / sec
Format of the Data ( or format of the serial word ): n - 8 - 1 (no parity – 8 data bits – 1 stop bit)
Below is the PROFIBUS connection of the indicator:
Indicator Meaning
Profibus port
At to
--------------------------------------------
3 B-LINE
3 B(-)
5 GND BUS 5 GND
6 +5V BUS 6 +5V
8 A-LINE 8 A(+)
NOTE
: The PROFIBUS port supports only the "PROFIBUS" transmission mode available only for the PC port (see
SEtup >> SEriAL >> CoM.Pc >> PcModE step).
6.4 SERIAL PORT TRANSMISSION MODES
6.4.1 PC PORT SELECTION
It's possible to select the serial port to be used as a PC port and therefore, invert the serial ports.
This setting is made in the
SEtuP >> SEriAL >> PC SEL step.
DGT and DGT60 models
By selecting the 485/PROFIBUS serial port as PC PORT the 232 serial line is set as PRN PORT.
By selecting the 232 serial port as PC PORT the 485 serial line is set as PRN PORT or, in the case of the DGT4PB ,
the PROFIBUS port is not managed.
DGTQ and DGTP model
By selecting the COM 1/PROFIBUS serial port as PC PORT the COM 2 serial line is set as PRN PORT.
By selecting the COM 2 serial port as PC PORT the COM 1 serial line is set as PRN PORT or, in the case of the
DGTQPB and DGTPPB , the PROFIBUS port is not managed.