D-Sub Connector; Antenna Connector; Netbiter Easyconnect Ec250; Terminal Block (12-Pin) - HMS Netbiter EasyConnect EC150 User Manual

4.2.4 D-Sub Connector

The male 9-pin 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 position of the
remote system.
Pin Other Device
1 CD (Carrier Detect)
2 Tx (Transmit)
3 Rx (Receive)
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)
Note that when using the D-Sub connector to connect Modbus devices via RS-232, it will not be
possible to simultaneously use RS-485 on the 3-pin terminal block. Connecting a GPS device will
not affect the simultaneous use of RS-485.

4.2.5 Antenna Connector

The antenna connector is a standard SMA screw connector. Optional external antennas are available
from your supplier.

4.3 Netbiter EasyConnect EC250

4.3.1 Terminal Block (12-pin)

Terminal No. Pin
24 V+
23 GND
22 DI: COM
21 DI: DI1
20 DI: DI2
19 RS232: Rx
18 RS232: Tx
17 COM
16 RS422: RD(A)
15 RS422: RD(B)
14 RS485: TD(A)
RS422
13 RS485: TD(B)
RS422
Field wiring terminals must be connected with minimum wire
size 24AWG.
Netbiter EasyConnect
Doc.Rev. 2.10
Function
Power 9-24V DC
Power ground
Digital input common
Digital input #1
Digital input #2
RS-232 Receive
RS-232 Transmit
Common
RS-485 Receive A
RS-485 Receive B
RS-485 Line A / RS-422
Transmit A
RS-485 Line B / RS-422
Transmit B
Connections 19
Doc.ID. HMSI-168-92