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Configuring SNTP
Simple Network Time Protocol (SNTP) can be used to synchronize drive time with a
network time server. When SNTP is enabled, FMBT-21 will request the time from
configured server at a given interval. To receive this time synchronization, you must
configure the drive with parameter 96.20 time sync primary source. The table below
shows the settings for SNTP:
Settings
SNTP update interval
SNTP time offset to UTC
SNTP server address 1
SNTP server address 2
Security page
￭
On the Security page, you can upload a private key and certificates for FMBT-21 to use
instead of the self-signed certificate that FMBT-21 uses as a default. You can upload
and manage Drive Composer certificate files on Security page under "Drive Composer
certificate settings". Up to four certificates are supported at a time.
FMBT-21 uses secure HTTPS (TLS 1.2) communication for the web page server. By
default, FMBT-21 does not require client authentication for the PC tool communication.
You can use client authentication to improve the system security.
If unsecured communication is required, you can enable it from Service configuration
page or by setting parameter 51.15 Service configuration bit 4. When unsecured
communication is enabled, the PC tool communication is not encrypted or
authenticated.
For more details, refer to
manual (3AUA0000094606
Appendix D - FMBT-21 configuration web pages 87
Description
Interval to request time from server.
Time offset to the time received from SNTP.
This value can also be set over Modbus register
(4)00084.
Note: SNTP time offset change does not need a
reboot.
Primary server address for requesting time.
Format: IP address followed by optional port num-
ber, eg:
192.168.0.1:123
Note: If port number is missing, the default NTP
port number "123" is used.
Secondary server address used if the request to
server 1 fails.
Drive composer start-up and maintenance PC tool user's
[English]).
Value
Default: 30 seconds
Minimum: 30
seconds
-1440...1440
minutes
-
-
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