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1. PLC Development Environment Using GX Developer
1.3 Developing PLC Programs
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1.3.3 Specifying the Connection Target
You must specify the connection target before performing on-line operations from GX Developer to
the CNC.
(1) Operation procedure
Perform the following operation from GX Developer to start the setting screen.
[Online] → [Transfer setup]
Set only the following items. Leave the other items unchanged from the initial values.
(a) Setting for serial connection (RS-232C or RS-422)
• Personal computer side I/F : Serial
Serial port name COM1 or COM2
Baud rate 19.2Kbps
• PLC side IF : CPU unit
(b) Setting example for Ethernet connection
• Personal computer side I/F : Ethernet
Network No. 1
Station No. 1
• PLC side I/F : Ethernet unit
Network No. 1
Station No. 2
IP address (Address set by NC parameter)
Routing method Automatic conversion method
• CNC side IP address setting
# No. Parameter name Setting example
#1926 IP address 192.182.1.2
#1927 Subnet mask 255.255.255.0
#1928 Gateway address 192.182.1.254
#1929 Port number 64758
The local station’s IP address is set for the NC side.
The IP address set here is shared with the other Ethernet communication functions (GOT
connection, etc.).
(Note) The setting example above is for when the GX Developer is connected to the CNC.
To connect the GX Developer to the Ethernet or multiple hierarchical network of
MELSECNET/10, setting values will differ.