Specifications

App - 46
Appendix 3 Connecting GX Developer to PLC CPU via Ethernet
This section describes how to operate GX Developer to access a PLC CPU via an
Ethernet module where GX Developer is directly connected (called Ethernet
connection) .
In this section, the connection topology shown in Assignment I will be changed to the
one using Ethernet connection, as an example.
Q61P
-A1
QX
42
QY
42P
Q64
AD
Q64
DA
Q02H
CPU
192.168.1.101
1
0
11
192.168.1.1
1
1
0
E71
<Demonstration machine No.1>
Ethernet module (QJ71E71-100)
IP address
Network No.
Group No.
Station No.
<PLC A1>
Hub
<Personal computer 1>
IP address
Network No.
Group No.
Station No.
:
:
:
:
:
:
:
:
POINT
(1) The Ethernet parameters must be saved (written) to the PLC CPU of the
destination station, where the Ethernet module is mounted, before the Ethernet
connection.
Write the parameters to the PLC CPU referring to Section 5.2.1 to 5.2.4.
(RS-232 connection)
(2) For accessing the other stations (*1), relevant parameters for the
MELSECNET/H and MELSECNET/10 relay communication function should be
set in the PLC CPUs of the request source station (PLC A1), communication
relay station and request destination station (access station).
Set the required parameters to the related PLC CPUs referring to the Q
Corresponding Ethernet Interface Module User's Manual (Application).
*1 The above figure shows the access to the PLC CPU on another Ethernet or
on the MELSECNET/H via PLC A1.