VIPA System 300V - Page 122

Chapter 6 Deployment CPU 31x with TCP/IP Manual VIPA System 300V
6-32 HB130E - CPU - Rev. 11/50
Cycle time for
SYNC telegrams
You may choose the cycle time for sending a synchronization telegram in
a range of 1...60 seconds. Default are 10s.
The synchronization telegram is transferred in MMS or BCD format.
Attention!
Please regard that time format and cycle time must be conformly
parameterized within the system! The last byte of the Ethernet address of
every Cp has to be different!
MMS format For the synchronization of foreign modules you may only use the MMS
format. The clock telegram has the following structure:
---- tttt Byte 0 t: time in ms starting at 0:00 o’clock
tttt tttt Byte 1
tttt tttt Byte 2
tttt tttt Byte 3
dddd dddd Byte 4 d: Date in days starting from the 1.1.1984
dddd dddd Byte 5
vkkk kk-- Byte 6 v: Sign 0=+, 1=-;
k: time change in 0,5 hours
---- --e- Byte 7 e: 0=time of DCF; 1=time of replacement
master
BCD format The BCD format is a simpler alternative. Please regard that the BCD
format is not useable with all CPs.
1/10s 1/100s Byte 0 Parts of seconds
10s 1s Byte 1 Seconds
10m 1m Byte 2 Minutes
ab10h 1h Byte 3 a: Modus: 0=12h, 1=24h;
b: 0=AM, 1=PM;
Hours
wwww ---- Byte 4 0=Monday ... 6=Sunday
10T 1T Byte 5 Day of month
10M 1M Byte 6 Month
10J 1J Byte 7 Year
v--k kkkk Byte 8 v: Sign: 0=+, 1=-
k: time change in 0,5 hours
---- 1/1000s Byte 9 1/1000s
ssss --em Byte 10 s: Time status: (Click status in ANZW);
e: Flag: 0=time of DCF; 1=time of rep. mast.
m: Module valid: 0=valid, 1=invalid
Module valid means that the recent master-CP could be parameterized
and does not work with default parameters.