User's Manual
18 - 24
18. CNC CONNECTION
18.7 Precautions
18.7.4 Ethernet connection
 Via network system
GOT with Ethernet communication cannot access the 
CNCs in another network via the CNC (network 
module, Ethernet module, etc.).
 When connecting to multiple GOTs
When connecting two or more GOTs in the Ethernet 
network, set each [PLC No.] to the GOT.
18.4.1 Setting communication interface 
(Communication settings)
 When connecting to the multiple network 
equipment (including GOT) in a segment
By increasing the network load, the transmission speed 
between the GOT and CNC may be reduced.
The following actions may improve the communication 
performance.
• Using a switching hub
• More high speed by 100BASE-TX (100Mbps)
• Reduction of the monitoring points on GOT
 Ethernet cable connection
Ethernet cable is so susceptible to noise that you 
should wire power cables and electric supply cables 
separately. And you need to attach a ferrite core 
(attachment) on the control unit side.
For details of the Ethernet cable connection, refer to the 
following
C6/C64/C64T NETWORK INSTRUCTION 
MANUAL BNP-B2373 IX Connection Function 
with GOT
 Version of CNC
For MELDAS C6/C64, use NC system software version 
D0 or later.
LED1 
1 turn
Ferrite 
core
Ferrite core
Ethernet 
FG cable for Ethernet
GOT










