User Manual

Function blocks
225
08/04 AWB2528-1423GB
Parameter display and parameter set for the SC
function block:
The SC01 function block has no parameters as it is a
triggered system service.
Coil
SC01T: trigger coil
Memory requirement of the SC function block
The SC function block requires 20 bytes of memory.
SC diagnostics
The SC function block only functions when the easy-NET
network is functioning correctly (a Section “Signs of life of
the individual stations and diagnostics”, Page 259).
Function of the date/time function block
If the trigger coil of the function block is activated, the
current date, the day of the week and time from the sending
station is automatically put onto the easy-NET network. All
other network stations must accept these values.
This process can be repeated as often as desired. The trigger
coil must be triggered again from the 0 to the 1 state.
Accuracy of time synchronisation
The maximum time deviation between the functional
stations is 5 s.
h
The station that sends its date and time does this when
the seconds value is zero.
Example: The trigger pulse is actuated at 03:32:21
(hh:mm:ss). The other stations are synchronised at
03:33:00. This time is accessed by all other stations.