3 Appearance
2.1.4. Serial Ports
Two serial ports are provided in RS232/422/485 modes that can be congured by software or by
DIP switch where as the VPNRouter iR 2110 has only one serial port congurable by software. For
the detailed information about the supported modes refer to the Table
RS232
RS422
RS485
Modes
full duplex
full duplex
2-wire: half duplex, without echo
4-wire: full duplex
Signals
TxD, RxD, RTS, CTS,
DTR, DSR, DCD, RI,
GND
Tx+/-, Rx+/-,
GND
2-wire: Data+/-, GND
4-wire: Tx+/-, Rx+/-, GND
Data
Direction
Control
by driver, via RTS
Speed
up to 921.6 / 1000 kbps
up to 3.7 Mbps
up to 3.7 Mbps
Table 3: Serial Interface Specications
2.1.5. Digital I/O
Four input and four output signals at TTL level are provided. For input signals the change of at
least one input signal generates an interrupt. See Section
for electrical characteristics.
The VPNRouter iR 2110 does not have these.
2.1.6. I²C
One port for external I²C function is provided. The signals originate in a repeater, to protect the
internal circuits from external misconguration or signal shorting. The VPNRouter iR 2110 does
not have this port.
2.1.7. WLAN
The VPNRouter is available with an optional built-in WLAN function as of IEEE 802.11b/g/n for
wireless connection.
3. Appearance
This is how the VPNRouter systems look like on the top, front and bottom sides.
Juli 2016
VPNRouter Software Manual
11
