Instruction manual

i .LON 100 e3 Hardware Guide 11
Figure 1.4
i .LON 100 Server LONWORKS TP/FT-10 Free Topology
Twisted Pair Terminals
Table 1.2 lists the enclosure marking for each of the network connector screw
terminals.
Table 1.2
i .LON 100 Server LONWORKS TP/FT-10 Network
Connections
Screw Terminal Enclosure Marking L
ONWORKS Network
Connection
17 LON
B/PLT+
TP/FT-10 twisted pair
18 LON A / PLT- TP/FT-10 twisted pair
RS-232/RS-485 Serial Ports
The i .LON 100 server includes one isolated RS-485 multi-drop bus port, and one
EIA-232 serial port. These ports can be used to connect the
i .LON 100 server to a
GSM modem, to other computers, or to bus systems.
The EIA-232 serial connections are implemented on screw terminals 21 through
25. To connect a GSM modem to the
i .LON 100 RS-232 port, you can order a
cable in Europe from EBV. The part number is ECH-RS232/500.
The RS-485 bus connections are implemented on screw terminals 26 though 28.
These are polarity sensitive signals, and the (+) and (-) connections are noted
adjacent to the terminals. Since RS-485 is susceptible to common mode ground
differential voltage swings, it is imperative that you use a suitable shielded cable
when connecting RS-485 based devices. Reversing the polarity of the RS-485 bus
will cause improper bus operation and must be avoided.
To connect the
i .LON 100 server to a GSM modem, the serial connector from the
modem must be attached to the ports on the
i .LON 100 server as specified in
Table 1.2.