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GCM02-MT-ING4 NEW.doc c/02 04/03/2003 ENG Page 48 of 57
Through the serial communication all the parameters and commands of the group are under control
General monitor of the situation plant
2.17.3 REMOTE CONTROL AND MODEM
Concerning the GCM02 unit, with the release 6.0, the remote control user connector is on left side of the unit (view in frontal way), near to dip-
switch which enables settings and languages and to the trimmer which regulates the intensity of the display LCD.
The IS-03 serial interface unit for the serial communication has to be set to work in two different way of serial connection: RS232 and RS485.
On this unit there are also a green led and another red, the green is the transmission function (TX) and the red is the receipt, flashing during
the operation.
In the following figure is brought the external view of the IS03 unit.
The jumper, opportunely connected, enables the closing of the line of the RS485 serial, inserting the resistance R which closes the line.
For the connection from the ISO3 to PC by RS232 interface, it needs a wire null-modem (standard for PC); his configuration is the following:
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