7.6
Configuration parameters
Configuration Parameters of the Time Synchronization Service
At a Glance
Aim of this
Section
What's in this
Section?
This section introduces the configuration parameters linked to the time synchronization service, which uses the Network Time Protocol (NTP).
This section contains the following topics:
Topic
Configuration Parameters Linked to the Time Synchronization Service (NTP)
Using the Time Synchronization Service
Configuration of the Time Synchronization Service (NTP)
Page
160
163
164
35011050 01 July 2006
159
Configuration parameters
Configuration Parameters Linked to the Time Synchronization Service (NTP)
List of
Parameters
Time Zones
Available
Configure or change the following parameters on the NTP Configuration page.
1.
IP address of primary NTP server z
Enter a valid IP address
2.
IP address of secondary NTP server z
Enter a valid IP address
3.
Polling Period (in seconds)
Enter a value z min = 1sec z z max = 120sec default = 5 sec
4.
Time Zone z
Select from drop-down menu z
Universal Time, Coordinated (GMT) = default
Custom time zone
5.
Automatically adjust clock for daylight saving change z
Parameter is selected by default (check mark appears) if daylight saving time is chosen.
Select one from drop-down menu.
Time Zone Description
Custom
(GMT-12:00) Dateline Standard Time [Eniwetok Kwajalein]
(GMT-11:00) Samoa Standard Time [Midway Is Samoa]
(GMT-10:00) Hawaiian Standard Time [Hawaii Honolulu]
(GMT-09:00) Alaskan Standard Time [Anchorage]
(GMT-08:00) Pacific Standard Time [Los Angeles Tijuana]
(GMT-07:00) Mexican Standard Time [Chihuahua La Paz Mazatlan]
(GMT-07:00) Mountain Standard Time [Arizona Phoenix]
(GMT-07:00) Mountain Standard Time [Denver]
(GMT-06:00) Central Standard Time [Chicago]
(GMT-06:00) Mexico Standard Time [Tegucigalpa]
(GMT-06:00) Canada Central Standard Time [Saskatchewan Regina]
(GMT-06:00) Central America Standard Time [Mexico_city]
(GMT-05:00) SA Pacific Standard Time [Bogota Lima Quito]
(GMT-05:00) Eastern Standard Time [New York]
No
No
Yes
No
Yes
Yes
No
Yes
Yes
No
No
Yes
Yes
DST
Available
Yes
No
160
35011050 01 July 2006
35011050 01 July 2006
Configuration parameters
Time Zone Description
(GMT-05:00) Eastern Standard Time [Indiana (East)] [Indianapolis]
(GMT-04:00) SA Western Standard Time [Caracas La Paz]
(GMT-04:00) Pacific SA Standard Time [Santiago]
(GMT-03:30) Newfoundland Standard Time [Newfoundland St Johns]
(GMT-03:00) E. South America Standard Time [Brasilia Sao_Paulo]
(GMT-03:00) SA Eastern Standard Time [Buenos Aires Georgetown]
(GMT-02:00) Mid-Atlantic Standard Time [South_Georgia]
(GMT-01:00) Azores Standard Time [Azores Cape Verde Island]
(GMT)
(GMT0)
Universal Coordinated Time [Casablanca, Monrovia]
Greenwich Mean Time [Dublin Edinburgh Lisbon London]
(GMT+01:00) Romance Standard Time [Amsterdam CopenHagen Madrid
Paris Vilnius]
(GMT+01:00) Central European Standard Time [Belgrade Sarajevo Skopje
Sofija Zagreb]
(GMT+01:00) Central Europe Standard Time [Bratislava Budapest Ljubljana
Prague Warsaw]
Yes
Yes
(GMT+01:00) W. Europe Standard Time [Brussels Berlin Bern Rome
Stockholm Vienna]
(GMT+02:00) GTB Standard Time [Athens Istanbul Minsk]
(GMT+02:00) E. Europe Standard Time [Bucharest]
Yes
Yes
Yes
(GMT+02:00) Egypt Standard Time [Cairo] Yes
(GMT+02:00) South Africa Standard Time [Johannesburg Harare Pretoria] No
(GMT+02:00) FLE Standard Time [Helsinki Riga Tallinn]
(GMT+02:00) Israel Standard Time [Israel Jerusalem]
(GMT+03:00) Arabic Standard Time [Baghdad]
(GMT+03:00) Arab Standard Time [Kuwait Riyadh]
Yes
Yes
Yes
No
(GMT+03:00) Russian Standard Time [Moscow St. Petersburg Volgograd] Yes
(GMT+03:00) E. Africa Standard Time [Nairobi] No
(GMT+03:30) Iran Standard Time [Tehran]
(GMT+04:00) Arabian Standard Time [Abu Dhabi Muscat]
Yes
No
(GMT+04:00) Caucasus Standard Time [Baku Tbilisi]
(GMT+04:00) Afghanistan Standard Time [Kabul]
(GMT+05:00) Ekaterinburg Standard Time [Ekaterinburg]
(GMT+05:00) West Asia Standard Time [Islamabad Karachi Tashkent]
Yes
No
Yes
No
No
Yes
No
Yes
Yes
Yes
Yes
Yes
No
DST
Available
No
No
161
Configuration parameters
Time Zone Description
(GMT+05:30) India Standard Time [Bombay Calcutta Madras New Delhi]
(GMT+06:00) Central Asia Standard Time [Almaty Dhaka]
(GMT+06:00) Sri Lanka Standard Time [Columbo]
(GMT+07:00) SE Asia Standard Time [Bangkok Hanoi Jakarta]
No
No
(GMT+08:00) China Standard Time [Beijing Chongqing Hong Kong Urumqi] No
(GMT+08:00) W. Australia Standard Time [Perth] No
DST
Available
No
Yes
(GMT+08:00) Singapore Standard Time [Singapore]
(GMT+08:00) Taipei Standard Time [Taipei]
(GMT+09:00) Tokyo Standard Time [Osako Sapporo Tokyo]
(GMT+09:00) Korea Standard Time [Seoul]
No
No
No
No
(GMT+09:00) Yakutsk Standard Time [Yakutsk]
(GMT+09:30) Cen. Australia Standard Time [Adelaide]
(GMT+09:30) AUS Central Standard Time [Darwin]
(GMT+10:00) E. Australia Standard Time [Brisbane]
(GMT+10:00) AUS Eastern Standard Time [Canberra Melbourne Sydney]
(GMT+10:00) West Pacific Standard Time [Guam Port Moresby]
(GMT+10:00) Tasmania Standard Time [Hobart]
(GMT+10:00) Vladivostok Standard Time [Vladivostok]
(GMT+11:00) Central Pacific Standard Time [Magadan Solomon Is New
Caledonia]
(GMT+12:00) New Zealand Standard Time [Auckland Wellington] Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
No
No
(GMT+12:00) Fiji Standard Time [Fiji Kamchatka Marshall Is] No
162
35011050 01 July 2006
Configuration parameters
Using the Time Synchronization Service
Establishing
Accuracy at
Power Up
Obtaining and
Maintaining
Accuracy
Before starting a system, the Ethernet network must be configured for a predefined interval within which the accuracy is established. Accuracy is established at powerup—the Ethernet module boots and then obtains the time from the NTP Server.
Several updates may be required to achieve peak accuracy. Once an accurate time is obtained, the time synchronization service sets the STATUS in the associated time service register.
The time service clock starts at 0 and increments until the Ethernet network time is fully updated from the module.
Model
Premium with PL7
Starting Date
January 1st 1980 00:00:00.00
z z z
Clock accuracy is not affected by issuing Stop/Run commands on the PLC
Clock updates are not affected by issuing Stop/Run commands on the PLC
Mode transitions do not affect the accuracy of the Ethernet network
Reinitializing the
Time Service
Register
After a download or an NTP server swap, the status clock value associated with the time service register in the CPU is reinitialized.
Two polling periods elapse before an accurate time is re-established.
35011050 01 July 2006
163
Configuration parameters
Configuration of the Time Synchronization Service (NTP)
Configuring the
Time Service with the NTP
Configuration
Page
You must use the module’s embedded Web page to configure the time service. No other method is available.
NTP Configuration
NTP Server Configuration
IP Address of Primary NTP Server:
IP Address of Secondary NTP Server:
Polling Period:
Time Zone
(GMT-05:00)Eastern Standard Time[New York]
15
192.168.5.100
0.0.0.0
sec
Automatically adjust clock for daylight saving change
Save Cancel Disable NTP
Time Service
Command
Buttons
Execute the following commands
Command Button Description
Save Stores new NTP (time service) configuration. Previous configuration is no longer valid.
Cancel
Disable NTP
Cancels new NTP (time service) configuration. Previous configuration is valid
IP of Primary and Standby set = 0.
NTP server not polled
Time in controller not updated.
164
35011050 01 July 2006
Configuration parameters
Changing Time
Service
Parameters
To make any changes to the time synchronization service,
Step
1
2
Action
Enter changes in the appropriate field on the NTP Configuration page for one or all of the configurable parameters.
Click Save.
Important
Information about the Time
Service
Note: About the Time Service
1.
Enable/Disable Daylight Savings Time parameter
If the Enable/Disable check box is selected, the module automatically corrects the local time to account for daylight savings time. Therefore, requiring no action, as the daylight savings time start and end are automatically changed each year.
2.
Polling Time Parameter
The time (in seconds) is the time between time updates from the NTP server.
The default is 5 Seconds.
3.
Storing the Time Service Configuration
The last time service configuration is saved internally in the Ethernet module.
4.
Replacing the Ethernet Module
If the Ethernet module has to be replaced, the stored configuration is lost, and the system returns to the default configuration.
35011050 01 July 2006
165
Configuration parameters
Customizing
Time Zone
Parameters
If you want a time zone not listed in the time zone table,
Step Action
1 Write the text rules for the custom time zone.
Comment
2 Using an FTP client, store your rules in the file:
/FLASH0/wwwroot/conf/NTP/customrules user ID: ntpupdate password: ntpupdate
3 When the rules are written, choose the drop down menu on the NTP Configuration web page, and configure (or reboot) the module by selecting
Time Zone = Custom
Root directory to store 'customrules' is set by the FTP server as
/FLASH0/wwwroot/conf/NTP
The NTP component looks for customrules, calls the tz compiler and generates a new file called
'tz_custom'. This file is binary file and should not be edited.
If the tz compiler detects a syntax error in customrules, the error is logged in the file:
/FLASH0/wwwroot/conf/NTP/ error.log
1.
NTP component is not launched
2.
NTP Status field in diagnostic web page displays NOT OK.
4 If you want more information, the syntax to write those rules along with a few examples are found in the module in
/FLASH0/wwwroot/conf/NTP/instructions.txt
166
35011050 01 July 2006
