Echelon i.LON 100 e2 Internet Server - Manual (Page 21)

i.LON 100 Internet Server User’s Guide 2-7
signals, it also supplies the M-Bus devices with power. (like the Echelon Link
Power Transceivers).
Depending on the number of M-Bus devices you are going to connect to the i.LON
100, different classes of level converters are available.
There are converters that can drive only 3 M-Bus devices, and there are
converters that can drive 20, 60, or even 250 devices.
Examples and more information on these level converters can be found at:
www.relay.de (Level Converter PW3, PW20, PW60) , www.stv-automation.de
(BIALON MPW-20 M-Bus) or www.hydrometer.com (HYDRO-CENTER 25, 60,
250).
For more information on the M-Bus itself, please refer to the M-Bus User Group
at www.m-bus.com
i.LON 100 Server EIA-232 and RS-485 Port Terminals
i.LON 100 Server EIA-232 and RS-485 Port Connections
Screw Terminal Enclosure Marking EIA-232/RS-485
connection
21 RTS EIA-232 RTS
22 CTS EIA-232 CTS
23 RXD EIA-232 Receive
24 TXD EIA-232 Transmit
25 GND RS-232 ground
26 Shield GND RS-485 cable shield
27 RT- RS-485 (-)
28 RT+ RS-485 (+)
High Voltage Mains Power
!