
SHEET
24/27
DESCRIPTION
DESIGN
DATE
EDIT
01
Mutai
First issue
TITLE
Addition of DHCP/DNS functions
B-63644EN/02-2
FANUC LTD.
02.06.11
DRAW.NO.
5. Application of DHCP and DNS to FOCAS1/Ethernet function
The ethernet parameters of CNC can be configured by utilizing a DHCP/DNS server, without CNC
setting operation.
(DHCP client function needs to be activated for this feature.)
DHCP is the network function which can assign a unique IP address to the devices on a network
automatically.
5.1. Flow of action
When a CNC is rebooted
(1) CNC with “Host Name” demands a IP address from a DHCP server.
(2) The DHCP server sends back a unique IP address.
(3) Furthermore, the DHCP server informs DNS server of the relationship between “Host Name”
and the corresponding IP address.
The DNS server refreshes its database according to the above DHCP information.
When a FOCAS1/Ethernet application software is running
(4) An application software calls a remote CNC with “Host Name”.
(5) The PC asks the DNS server the IP address corresponding with “Host Name”.
(6) The PC gets the IP address and tries to access the CNC.
CNC-1
(1) Set of Host name
(2) Notifying PC
of HOST-1
at CNC start
(4) Inquiry about
IP address of CNC-1
(5) IP address
Windows 2000 Server
DHCP server/DNS server
User
application software
(FOCAS1/Ethernet)
(3) Delivery of IP address to CNC-1
(6) communication
Application software
calls the CNC by Host
name(CNC-1), instead
of an IP address