Instruction manual

XWEB 500 – rel.1.0
turned off until you are finished connecting all electrical devices to the unit.
To avoid accidental start of the unit, remember to plug in electrical cable only when you have
finished setting up all other connection.
1
2
: Alarm 1 output relay
3
4
: Alarm 2 output relay
5
6
7
: System Alarm
:5-6 No Alarm
:5-7 At least one alarm
8
9
: modem reset relay
10
11
: digital input
12 (+)
13 (-)
14 ()
: RS 485 socket
: Power supply connector
: USB socket for PC connection
: USB socket for devices connection
: External modem socket
: Internal modem line connector
: RJ45 Ethernet connector
2.1.1 RS485
To be connected to the serial line all the Dixell Modbus instruments must be provided with direct RS485
terminals or the “TTL”-RS485 interface (XJRS485 or XJ485). Check the instrument manuals for more
information.
The RS485 line is mainly based on two polarised terminals. Please beware to respect the right sequence for
all the devices connected to the serial line.
Follow these important advises:
• The RS485 serial line must reach all the instruments where they are installed.
• Beware to the wire polarities when screwing them into the instrument terminals.
10/103 10/01/2006 - 1592010900