GE C30 Instruction Manual page 160

5.2 PRODUCT SETUP

PATH: SETTINGS PRODUCT SETUP
ADDRESSES
 IEC NETWORK
 CLIENT ADDRESSES
The UR can specify a maximum of five clients for its IEC 104 connections. These are IP addresses for the controllers to
which the UR can connect.
A maximum of two simultaneous connections are supported at any given time.
k) SNTP PROTOCOL

PATH: SETTINGS PRODUCT SETUP
 SNTP PROTOCOL

5
The C30 supports the Simple Network Time Protocol specified in RFC-2030. With SNTP, the C30 can obtain clock time
over an Ethernet network. The C30 acts as an SNTP client to receive time values from an SNTP/NTP server, usually a ded-
icated product using a GPS receiver to provide an accurate time. Both unicast and broadcast SNTP are supported.
If SNTP functionality is enabled at the same time as IRIG-B, the IRIG-B signal provides the time value to the C30 clock for
as long as a valid signal is present. If the IRIG-B signal is removed, the time obtained from the SNTP server is used. If
either SNTP or IRIG-B is enabled, the C30 clock value cannot be changed using the front panel keypad.
To use SNTP in unicast mode,
set and
SNTP FUNCTION
values are obtained and averaged, it generally takes three to four minutes until the C30 clock is closely synchronized with
the SNTP/NTP server. It may take up to two minutes for the C30 to signal an SNTP self-test error if the server is offline.
To use SNTP in broadcast mode, set the
C30 then listens to SNTP messages sent to the "all ones" broadcast address for the subnet. The C30 waits up to eighteen
minutes (>1024 seconds) without receiving an SNTP broadcast message before signaling an SNTP self-test error.
The UR-series relays do not support the multicast or anycast SNTP functionality.
l) EGD PROTOCOL

PATH: SETTINGS PRODUCT SETUP
 EGD PROTOCOL

5-32

COMMUNICATIONS
CLIENT ADDRESS 1:
0.0.0.0
CLIENT ADDRESS 2:
MESSAGE
0.0.0.0
CLIENT ADDRESS 3:
MESSAGE
0.0.0.0
CLIENT ADDRESS 4:
MESSAGE
0.0.0.0
CLIENT ADDRESS 5:
MESSAGE
0.0.0.0

COMMUNICATIONS
SNTP FUNCTION:
Disabled
SNTP SERVER IP ADDR:
MESSAGE
0.0.0.0
SNTP UDP PORT
MESSAGE
NUMBER: 123
SNTP SERVER IP ADDR
is "Enabled", the C30 attempts to obtain time values from the SNTP/NTP server. Since many time
SNTP SERVER IP ADDR

COMMUNICATIONS
 FAST PROD EXCH 1
 CONFIGURATION
 SLOW PROD EXCH 1
MESSAGE
 CONFIGURATION
 SLOW PROD EXCH 2
MESSAGE
 CONFIGURATION
C30 Controller System

IEC 60870-5-104 PROTOCOL
Range: Standard IPV4 address format
Range: Standard IPV4 address format
Range: Standard IPV4 address format
Range: Standard IPV4 address format
Range: Standard IPV4 address format

SNTP PROTOCOL
Range: Enabled, Disabled
Range: Standard IP address format
Range: 0 to 65535 in steps of 1
must be set to the SNTP/NTP server IP address. Once this address is
setting to "0.0.0.0" and

EGD PROTOCOL
5 SETTINGS

IEC NETWORK CLIENT
to "Enabled". The
SNTP FUNCTION
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