Rear - Microhard Systems Nano IP Series Operating Manual

3.0 Hardware Description
3.2.3 Connectors and Indicators

3.2.3.2 Rear

On the back of the Development Board is the Data port, RS485/422 interface, as well as the power
connections.
The DATA (RS232 Port (DCE)) on the rear
of the circuit board is used for:
The RS422/485 Port is used to interface the Nano
Development Board to a DTE with the same
interface type. Either the RS232 or RS422/485 interface is
used for data traffic.
Vin+/Vin– is used to power the unit. The input Voltage
range is 7-30 Vdc.
Caution: Using a
power supply that
does not provide
proper voltage may
damage the modem.
© Microhard Systems Inc.
RS485/422
Drawing 3-13: Nano Motherboard/Enclosed Rear View

RS232 serial data (300-921kbps) when
in DATA MODE, or

for configuring the modem when in
COMMAND MODE.
RS485/422
CONFIDENTIAL
ANTENNA
RS485/422
DATA
Name Data Port
DCD 1
RXD 2
TXD 3
DTR 4
SG 5
DSR 6
RTS 7
CTS 8
RING 9
Table 3-4: Data RS232 Pin Assignment
Green Conn. Name
Pin No.
1 TxB (D+)
2 TxA (D-)
3 RxB (R+)
4 RxA (R-)
5 Vin -
6 Vin +
Table 3-5: Data RS422/485 / Vin Pin Assignment
ETHERNET
Input or
Output
O
O
I
I
O
I
O
O
Input or
Output
O
O
I
I
I
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