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CTI Janus Programmable Automation Controller IOG
3.2.8
Startup from Factory Defaults
If you are starting up using the factory default, the controller will attempt to obtain an IP address using DHCP
(Dynamic Host Configuration Protocol). If a valid response is received, the controller will use the IP address
parameters provided. If not, the controller will assign an IP address from the Link Local IPV4 range.
IP Address in IPV4 link-local address block: 169.254.0.0
–
169.254.255.255
Subnet Mask: 255.255.0.0 (CIDR 16)
Gateway Address: 0.0.0.0
NOTE
The IP address parameters obtained from DHCP or assigned from the link local range are for temporary use only.
They are not permanently stored and will be cleared when the controller is restarted. You can set a permanent IP
address by using this address to access the web server configuration page or you can use the SD Card Ethernet
Port setup described below.
3.2.9
Setting the IP Address
SD Card Ethernet Port Setup
The
SD Card Ethernet Port Setup
provides you an alternate method to specify a fixed IP Address for the controller
Primary Subnet configuration when the web server is not accessible. This is useful for setting the initial IP address
for a new product or following a configuration reset.
This operation executes only if Module Switch 2 is OPEN and Module Switch 4 is CLOSED. If both Switches 2 and 4
are CLOSED, the ‘
Front Panel SD Card Firmware Update
’
operation, which is executed when Switch 2 is CLOSED
takes precedence.
This operation requires the following steps:
a)
Create a file named ‘cti.ini’ using your favorite text editor (Notepad works just fine).
The following keywords and associated values must be inserted into this file. The values must be valid
network settings expressed in dotted decimal notation. WARNING: Do not use leading zeroes for any of
the 4 octets in any of the IP addresses, as leading zeroes in TCP/IP will imply base-8 notation (Don
’
t use:
192.168.1.011, Instead use: 192.168.1.11).
[NET0]
usingdhcp = false
ip = x.x.x.x
subnetmask = x.x.x.0
gateway = x.x.x.x *
* This keyword an
d associated value is optional. If you don’t want to specify a default gateway address,
you should omit this entry.
Examples:
With Gateway Address:
Without Gateway Address:
[NET0]
[NET0]
usingdhcp = false
usingdhcp = false
ip = 198.18.74.56
ip = 198.18.74.56
subnetmask = 255.255.255.0
subnetmask = 255.255.255.0
gateway = 198.18.74.1
Each keyword/value combination must be entered on a separate line. If keywords are duplicated, only the
first entry is processed
–
the others are ignored.
