Device Drawings and Connections
28/86
netTAP NT 50 | Gateway Devices
DOC091202UM09EN | Revision 9 | English | 2013-02 | Released | Public
© Hilscher, 2010-2013
4.3.3
X3 Bottom Connection
4.3.3.1
X3 for Device Type NT 50-xx-EN
Ethernet on RJ45 Pin Assignment
Ethernet
Pin
Signal
Description
1
TX+
Transmit data positive
2
TX–
Transmit data negative
3
RX+
Receive data positive
4 Term
1
5 Term
1
Connected and terminated to PE via RC
combination*
6
RX–
Receive data negative
7 Term
2
8 Term
2
Connected and terminated to PE via RC
combination*
RJ45 socket, fe-
male
* Bob Smith Termination
Table 26: Ethernet RJ45 Pin Assignment
Important:
Please note for the use of hubs and switches the wiring in-
structions in section
on page 70.
4.3.3.2
X3 for Device Type NT 50-xx-RS
For this device type, the Ethernet interface is required for the configuration
of the device. It may be necessary for diagnostic purpose to use a Y cable,
which separates the serial interface (RS) and the Ethernet interface.
Device Damage!
!
Make sure that the NT 50 device and the remote device (via RS-232,
RS-422 respectively RS-485) have the same potential. Otherwise a
compensating current may cause device damage, because the serial in-
terface of the NT 50 device has no galvanic isolation to its power sup-
ply.
Device Damage!
!
Make sure that only a 4-wire Ethernet cable is used (with pin 1, 2, 3 and
6), if no Y cable for separation of the Ethernet and serial interface is
used. On pin 4, 5, 7 and 8 on the NT 50 device are the signals for the
serial interface. If you transfer these signal via an Ethernet cable to the
connected device (e. g. to a switch) this may cause a device damage of
the used devices.
