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8030HEPTA/GPS GPS - NTP Time Server with 2x 10/100/1000 MBit LAN Interface - V04.00
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hopf
Elektronik GmbH
Nottebohmstr. 41
• D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
Received data on the serial interface that are not specified in the pertinent
data string might disturb and interrupt the cyclic string output.
The receiving synchronization interface should be set to "transmitting on
request" for Sub-Master (Slave) Systems.
8.3.8.5.6.3.2 Structure
Character No.
Meaning
Hex-Value
1
STX (start of text)
$02
2
status
$30-39, $41-46
3
day of the week
$31-37
4
tens hour
$30-32
5
unit hour
$30-39
6
tens minute
$30-35
7
unit minute
$30-39
8
tens second
$30-36
9
unit second
$30-39
10
tens day
$30-33
11
unit day
$30-39
12
tens month
$30-31
13
unit month
$30-39
14
tens year
$30-39
15
unit year
$30-39
16
difference time tens hour / operational sign
$30-31, $38-39
17
difference time unit hour
$30-39
18
difference time tens minutes
$30-35
19
difference time unit minutes
$30-39
20
LF (line feed)
$0A
21
CR (carriage Return)
$0D
22
ETX (end of text)
$03
The difference time (time zone offset) is transmitted in hours and minutes following the year.
The transmission is done in BCD. The difference time may be up to ± 14.00h.
The operational sign is shown as the highest bit in the hours.
logic
1
= local time before UTC
logic
0
= local time after UTC
Example:
Data String
Tens Difference
Time Nibble
Difference Time
(STX)83123456030196
0
300(LF)(CR)(ETX)
0000
- 03:00h
(STX)83123456030196
1
100(LF)(CR)(ETX)
0001
- 11:00h
(STX)83123456030196
8
230(LF)(CR)(ETX)
1000
+ 02:30h
(STX)83123456030196
9
100(LF)(CR)(ETX)
1001
+ 11:00h
