38
GE Information
D.20 RIO - HARDWARE USER’S MANUAL
TIME SYNCHRONIZATION STRATEGIES
CHAPTER 4: SETTING UP THE D.20 RIO
You can now configure the D.20 RIO using the D.20 RIO HMI over the network
connection. See
Chapter 6, Using the D.20 RIO
. You must create administrator-level
user accounts before you can access the D.20 RIO remotely through SSH.
Setting the D.20 RIO device time and date
To set the time and
date:
1.
Connect to the rear maintenance RS-232 port. See “D.20 RIO field and network
connectors” on page 29.
2.
At the
D20RIO#>>
prompt, type
d20riocfg
and press
Enter
.
3.
Type
5
and press
Enter
to select 5. Configure Time Sync.
4.
Type
2
and press
Enter
to select
2. Set System Clock.
5.
Complete the on screen prompts as required to set the date and time.
Creating administrator-level user accounts
Since you cannot use the root user account to access the D.20 RIO remotely, you must
create administrator-level user accounts for this purpose. This must be done for the first
time through the D.20 RIO’s rear panel serial communications port.
To create a new
administrator-level
user account:
1.
Connect to the rear maintenance RS-232 port. See “D.20 RIO field and network
connectors” on page 29.
2.
At the
D20RIO#>>
prompt, type
d20riocfg
and press
Enter
.
3.
Type
1
and press
Enter
to select 1. Configure Authentication.
4.
Type
5
and press
Enter
to select
5. Administrator Group Users.
5.
Complete the on screen prompts as required to create a new administrator-level user.
You may now use this user account to access the D.20 RIO remotely through SSH.
NOTE
By default, the D.20 RIO is configured to restrict access to various command line services
like SSH to administrator-level users only. You can use the
Configure Administrator Only
Logins
setting under
Secure Access
to change this parameter and allow both
administrator- and supervisor-level access.
Time synchronization strategies
The D.20 RIO system time needs to be updated at a high frequency from a valid time
source, to keep it accurate. It is recommended to use a D400 as the SNTP source for a D.20
RIO with a fast SNTP poll frequency option (5 seconds). D.20 RIO system time accuracy is
defined as the time within the D400 and the D.20 RIO, with respect to the time input to the
D400. There are two options available for time synchronization to achieve better system
time accuracy.
•
IRIG-B option: A D400 is configured to accept an IRIG-B time sync input and a D.20 RIO
is configured for SNTP time sync with a D400.
1 ms system time accuracy can be achieved with this option. Performance test results
have shown 1 ms accuracy recorded for 99.6% of the total D.20 RIO points.
•
SNTP option: A D400 is configured to accept an SNTP time sync input and a D.20 RIO is
configured for SNTP time sync with a D400.
1 ms system time accuracy cannot be assured in this option. However higher time
accuracy can be achieved if a third-party SNTP to IRIG-B converter is used.
Содержание D.20 RIO
Страница 6: ...6 GE Information D 20 RIO Hardware User s Manual TABLE OF CONTENTS ...
Страница 10: ...10 GE Information D 20 RIO HARDWARE USER S MANUAL SAFETY WORDS AND DEFINITIONS ABOUT THIS DOCUMENT ...
Страница 46: ...46 GE Information D 20 RIO HARDWARE USER S MANUAL REMOTE AUTHENTICATION CHAPTER 4 SETTING UP THE D 20 RIO ...
Страница 58: ...58 GE Information D 20 RIO HARDWARE USER S MANUAL SYSTEM UTILITIES CHAPTER 6 USING THE D 20 RIO ...
Страница 64: ...64 GE Information D 20 RIO HARDWARE USER S MANUAL COMPLIANCE STANDARDS APPENDIX A STANDARDS PROTECTION ...
Страница 70: ...70 GE Information D 20 RIO HARDWARE USER S MANUAL INDEX ...
Страница 72: ...72 GE Information D 20 RIO HARDWARE USER S MANUAL ...
