183
Instruction Manual
SVGm
ENGLISH
8.- RS-485 COMMUNICATIONS
SVGm devices have an RS-485 serial communication output with the MODBUS RTU ® communica-
tions protocol.
For an installation with devices in parallel, the RS-485 connection can be made on any device.
8.1.- CONNECTIONS
The RS-485 cable must be wired with shielded twisted pair cable (minimum 3 wires), with a maximum
distance between the SVGm and the master device of 1200 metres.
A maximum of 32 SVGm static generators can be connected to this bus.
To establish communications with the master device, use an RS-485 converter.
B(-) A(+)
S
RS-232 / USB / Ethernet / Profibus ...
PC
RS-485
RS-485
RS-232
USB
Ethernet
Profibus
...
S
A B
Figure 76: RS-485 Connection diagram.
The RS-485 communications configuration in SVGm models is set to a baud rate of 9600 bps, 8 data
bits, 1 stop bit and no parity.
To Next Page
Loading...