EAAM057608EN
GC250 Technical Manual 51
The P.0107 sets the current values of the CTs primary.
6
GC250 has a USB port with B-type connector for a temporary connection with a PC for the
parameters configuration or for the download of history logs.
The USB protocol specifications do not allow it to be used permanently in the industrial sector
due to limited length of the cable and to the relatively elevated sensitivity to electrical disturbances
including on the PC side. For this reason
, the USB connection cable must only be inserted
when it is necessary to operate on the device and it must be removed from the connector
when the operation is finished.
INFORMATION!
The device is directly supplied by the PC through USB cable and it
turns on as soon as it is connected, so to let the parameters programming be easily
possible and without external supply
.
Make sure that the PC can provide at least 300mA
through the USB port used.
INFORMATION!
With supply by USB, the light if the LCD display can be reduced
compared to the normal operation; this is normal and it is not to be considered a device
fault.
WARNING! When the device is supplied by the sole USB port, it is not
to be considered operative and must not be used to command the genset.
The PC to be connected must have the
CDC_Sices_Win.inf
driver installed, which is supplied by
SICES; for driver installation refer to document [7].
After installing the driver, the PC will acknowledge the controller as a new serial port, to be used
just as if it were an RS232 serial.
The configuration parameter is P.0479: order of Modbus registers per USB serial port
The USB connection to a PC is used for three purposes:
-
Parameters programming
-
Reading/download history logs
-
Enabling the device firmware
The parameters programming is carried out through program SICES BoardPrg3, which, beyond
this, allows the resetting of the counters, the synchronisation of the internal clock of the device
with the one of the PC and the configuration saving on file. For the use of the program, refer to
the document [2].
The download of the history logs can be realised by means of special software tools.
Loading/replacing the firmware of the device is a specific operation of SICES srl; in addition to
the operating FW to be loaded, it requires a particular procedure and specific programs and
