Siemens TIM 4R-IE DNP3 - Synchronization of the TIM Time of Day by the CPU

Configuration in STEP 7
5.9 Configuring time-of-day synchronization
TIM DNP3
138 System Manual, 06/2014, C79000-G8976-C253-03
Time-of-day format
Table 5- 1 Format of the time information in the inputs of the I/O addresses of the TIM
Byte No.
Offset
[bytes]
Meaning
High nibble
Low nibble
Value
Range of
values
(decimal)
Value
Range of
values
(decimal)
1
+8
Year
tens
0...9
ones
0...9
2
+9
Month
tens
0...9
ones
0...9
3
+10
Tag
tens
0...9
ones
0...9
4
+11
Hour
tens
0...9
ones
0...9
5
+12
Minute
tens
0...9
ones
0...9
6
+13
Second
tens
0...9
ones
0...9
7
+14
Millisecond
hundreds
0...9
tens
0...9
8
+15
Millisecond
ones
0...9
Status
bit coded
Meaning of the entries in the table:
● Offset: Offset to the base value of the peripheral inputs in bytes
● High nibble: Bits 4-7
● Low nibble: Bits 0-3
● Value: Position of the relevant number
– Year, month, day, hour, minute and second are two-digit (tens + ones)
– Milliseconds are three-digit (hundreds + tens + ones)
● Status: Status of the time information
Format of "Status"
The status of the time information is available in the four bits of the low nibble of byte 8. The
following table shows the meaning and the values of the status.
Table 5- 2 Status bits of the time (low nibble of byte no. 8)
Bit No.
3
2
1
0
Meaning
Prewarning bit Not defined Daylight saving
time (DS), standard
time (ST)
Validity of the time
Value
0 = -
1 = prewarning:
Changeover at the
next full hour
(DS -> ST or ST -
> DS)
0 = ST
1 = DS
0 = invalid
1 = time valid