GE 869 Instruction Manual page 161

CHAPTER 4: SETPOINTS
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869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
WiFi IP Address / Subnet Mask
The default IP address is 192.168.0.x, where x is calculated as:
X = (modulo 242 of the last 3 digits of the serial number) + 12
Example: A unit has a serial number of MJ3A16000405, the default IP address would be
192.168.0.175 (where 405 mod 242 = 163 + 12 = 175).
This is to ensure uniqueness of the default IP address for all 8 Series devices present on one
wireless network and it creates a usable address space from 192.168.0.12 to 192.168.0.253
for 8 Series devices.
From the remaining range of unicast addresses 192.168.0.1 to 192.168.0.253, at least two
are going to be used for the AP and a laptop installed with the EnerVista software, which
will be used to configure the 8 Series devices. The AP should be configured with the
address 192.168.0.1 and mask 255.255.255.0 and have DHCP enabled with a DHCP range
from 192.168.0.2 to 192.168.0.253. This allows laptops, iPads and any other devices to
connect to the local network without the need to statically configure their own IP address
and mask.
WiFi GWY IP Address
The setting specifies the address of the access point AP which the 8 Series device uses for
communicating over WiFi.
WiFi Security
The setting enables WiFi security. If set to "None", there is no security and all traffic is open.
By default WiFi Security is set to WPA2-PSK.
WiFi SSID
The SSID is the public name of a wireless network. All of the wireless devices on a WLAN
must use the same SSID in order to communicate with each other. The default for the SSID
is provided by the vendor with the shipment of any new 8-Series device. It is
recommended that the customer modifies this name as needed after initial startup, to
ensure unique SSIDs if several WLANs are configured.
SSID broadcast should be disabled on AP. This provides some extra protection by requiring
a user to know an SSID before the user can connect to the device and making it harder for
casual outsiders looking for wireless networks to find the device and attempt to connect.
WiFi WPA2 Passphrase
The WPA2 Passphrase is used for generating the encryption key. The same passphrase
must be set on AP and on all devices communicating on the same WLAN. The 8-Series
device supports a string of up to 14 printable ASCII characters. Internally a 256-bit key is
calculated by applying the PBKDF2 key derivation function to this passphrase, using the
SSID as the salt and 4096 iterations of HMAC-SHA1.
The 8-Series devices are configured with a default passphrase, which is provided by the
vendor with the shipment of any new 8-Series device.
When choosing a new passphrase, the password complexity rules of CyberSentry must be
used (see CyberSentry details in the relay Instruction manual).
This field is visible only if the security is set to WPA2-PSK.
Ideally the passphrase should be set through EnerVista and not directly from the Keypad,
where there are limitations in terms of space and types of characters supported. However,
for convenience, the key setting is available from the Keypad as well.
WiFi Status
A WiFi symbol is displayed in the caption area of the 8-Series product front panel. The
following table lists all possibilities for this icon:
DEVICE
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