Connections
21
Doc.ID. HMSI-168-92
Netbiter EasyConnect
Doc.Rev. 2.10
4.3.2 D-Sub Connector
The 9-pin male D-Sub connector provides an RS-232 interface, which
can be used for communicating with Modbus RTU devices, or for
attaching a GPS device, to keep track of the system’s position.
Note that when using the D-SUB connector to connect Modbus devices via RS-232, it will not be
possible to connect any Modbus devices simultaneously on the 12-pin terminal block. This does
not apply when connecting a GPS device to the D-SUB connector.
4.3.3 Ethernet Connector
The RJ-45 socket provides the Ethernet network connection for Netbiter EasyConnect EC250. This
connector also supports Modbus TCP via Ethernet, which can be used at the same time as Modbus RTU
units on another interface.
4.3.4 SIM Card Slot
Netbiter SIM Card
When using a Netbiter SIM card (supplied by HMS), the card is configured ready for use, and the PIN
code security function has been disabled.
Other SIM Cards
To use any other SIM card, you will need to know the following information:
• The phone number for the SIM card.
• The Access Point Name (APN) to connect to, as well as the user name/password, if this is re-
quired by the network operator.
The PIN code security function must be also disabled before
mounting the SIM card. To do this: insert the SIM card in a
regular mobile phone and follow the instructions provided by
the manufacturer.
Insert The SIM card
The SIM card shoud be pushed into the slot provided on the
side of the unit, as shown here. The side of the SIM card with
the gold plating should face towards the 12-pin terminal block,
and the end with the cut corner should be inserted first. When
the card is fully inserted it will lock into position.
Pin
Function
1
CD (Carrier Detect)
2
Rx (Receive)
3
Tx (Transmit)
4
DTR (Data Terminal Ready)
5
GND
6
DSR (Data Set Ready)
7
RTS (Request To Send)
8
CTS (Clear To Send)
9
RI (Ring Indicator)
