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IP address of the front port, if the front and rear port are set to the
same subnet.
Setting up the PC or workstation for point to point access to IEDs
front port
A special cable is requested to connect two physical Ethernet interfaces together
without a hub, router, bridge or switch in between. The Tx and Rx signal wires
must be crossed in the cable to connect Tx with Rx on the other side and vice
versa. These cables are known as null-modem cable or cross-wired cable. The
minimum length should be about 2 m. The connector type is RJ-45, see
IEC09000096-1-en.vsd
PCM600
Tx
Tx
Rx
Rx
RJ-45
IED
IEC09000096 V1 EN
Figure 2:
Point to point link between IED and PCM600 using a null-modem
cable
The following description is an example valid for standard PCs using Microsoft
Windows operating system. The example is taken from a Laptop with one Ethernet
interface.
Administrator rights are requested to change the PC communication
setup. Some PCs have the feature to automatically detect that Tx
signals from the IED are received on the Tx pin on the PC. Thus
straight (standard) Ethernet cable can be used.
The IEDs DHCP server for the front port assigns an IP address for the computer.
The computer must be configured to obtain its IP address automatically as
described in the following procedure.
1. Select
Network Connections
in the PC, see
.
Section 2
1MRS756801 A
Starting up
14
630 series
Commissioning Manual