
B-64014EN/03 SETTING 4.SETTING THE DNS/DHCP FUNCTION
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4.4.3 When DHCP is Used with the FOCAS2/Ethernet Function
Ethernet parameters can be set with no setting performed from the
CNC, using the interaction between the DHCP server and DNS server
operating with Windows 2000 Server.
The DHCP function of the CNC is enabled.
Flow of operation
When the system is initialized or the system configuration is modified
1 A host name is set on the CNC.
2 When the power is turned on, the CNC posts the host name to the
DHCP server.
3 The DHCP server assigns an IP address, and the table of
correspondence between CNC host names and CNC IP addresses
is updated.
When FOCAS2/Ethernet application software is executed
1 The user's application inquires of the DNS server about the IP
address of a CNC.
2 The user's application acquires the IP address of the CNC.
3 The user's application communicates with the CNC by using the
IP address of the CNC.
CNC-1
(1) Sets the name.
(2) Posts CNC-1 at
power-on time.
(4) Inquires about the IP
address of CNC-1.
(5) Returns the IP address.
Windows 2000 Serve
DHCP server / DNS server
User's application software
(FOCAS2/Ethernet)
(3)
ssigns an IP address to CNC-1.
(6) Performs
communication.
The application software
specifies a CNC by its
name (CNC-1) instead of
its IP address.