User Guide – PERC2000 System Controller
Publication 81-9059-0605-0, Rev. B
November 2010
Proprietary Information of
PESA 5-2
The subnet currently selected is listed in area below the IP address box. If you need to modify
subnet address parameters, enter the first three octets of the subnet address by typing new
addressing data into the proper box. The fourth octet is by default entered as 255 to allow
discovery of all possible PESA devices within the subnet. When you have the network
parameters properly configured, click the OK button to select the new configuration and exit the
dialog box, or click Cancel to exit the box without making changes.
5.2 N
ETWORK
A
DDRESSING
In order for the host PC and P2K controller hardware to communicate, the IP address of the
controller card must be set to a subnet and address value that will allow the software to
“discover” the controller. This may require assigning and, in some applications, changing the IP
address of the system controller. In many installations, you will need to consult your facility
network administrator when adding hardware to the network or when the default IP address for
any hardware must be changed.
With any new P2K installation, the controller card is set to an initial base IP address. If two
cards are installed for a redundant control system both cards must be initially set to the same base
IP address.
All PERC2000 System Controllers are shipped from the factory with a programmed IP address of
192.168.1.220 and subnet mask of 255.255.255.0.
On system start-up each controller card performs a boot-up procedure on its processor circuitry.
As part of initialization, it determines into which module slot it is installed. This determination is
made whether the card is installed in a Cheetah router frame or a stand-alone rack chassis. Based
on its position, an individual controller can identify whether it is installed and initialized as the
primary or secondary controller in the system, and it also determines and assumes it own unique
IP address by adding an offset value, defined by its identity in the system, to its programmed base
IP address. This offset value is applied as follows:
• Primary card slot or card slot A in a router frame – Offset value is 0 (zero), and the
primary controller retains its set base IP address
• Secondary card slot – or card slot B in a router frame – Offset value is 1, and the
secondary controller assumes the IP address of base IP address + 1
On completion of boot-up, each system controller assumes an individual identity based on the
following characteristics:
• Its unique IP address on the network
• Whether it is installed in the primary or secondary card slot of the chassis or router frame
• Whether it is functioning as the primary or redundant system controller
5.3 C
HANGING
I
NITIAL
N
ETWORK
P
ARAMETERS
In many installations, the IP address setting from the factory may be used for initial “discovery”
of the card by the GUI, and if the address needs to be changed this can easily be done through
menus of the GUI application (Paragraph 5.3) – once the controller card and the host PC are
communicating.
To Next Page